China Products List

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

Product Description:D337硬面堆焊用焊条GB/T 984 EDRCrW-15用途：适用于铸钢或锻钢锻模的堆焊或修复。特性:低氢钠型药皮的CrW型热锻模堆焊焊条。电源极性:直流反接（DC+）熔敷金属化学成分（%）试验项目CCrWSP其他元素总量GB/T标准0.25～0.552.00～3.507.00～10.00≤0.035≤0.040≤1.00例值0.352.658.500.0100.015——堆焊金属硬度（焊后空冷）试验项目HRC(4层以上)GB/T标准≥48参考电流焊条规格(mm)Φ3.2Φ4.0Φ5.0焊接电流（A）90～130120～170160～210焊接工艺要点:1.烘干要求：焊前焊条须经300～350℃保温1h，随烘随用。2.堆焊件预热温度300℃以上，焊后缓冷。 more>

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

Product Description:D227 Hardfacing Welding ElectrodeGB/T 984 EDPCrMoV-A2-15Application:Suitable for hardfacing wear-resistant parts subjected to certain impact loads, such as the worn surfaces of disc cutters on tunneling machines.Characteristics:A low-hydrogen sodium-coated CrMoV hardfacing electrode, the deposited metal exhibits excellent crack resistance and abrasion wear resistance.Polarity:Direct current electrode positive (DC+)Chemical Composition of Deposited Metal (%)Test ItemCCrMoVGB/T Standard0.45～0.654.00～5.002.00～3.004.00～5.00Example Value0.504.532.474.50Hardness of Hardfaced MetalTest ItemHRC (4 layers or more)GB/T Standard≥55Reference CurrentElectrode Diameter (mm)Φ3.2Φ4.0Φ5.0Welding Current (A)90～130120～170160～210Welding Process Guidelines:1. Drying requirement: Electrodes must be baked at 300～350°C for 1 hour before use and used immediately after baking.2. For large workpieces, preheating to around 300°C is recommended, and the surface to be hardfaced should be cleaned of rust and oil contamination. more>

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

Product Description:GB/T 983 E16-25MoN-15Application:Suitable for welding low-alloy and medium-alloy steels in the quenched state, dissimilar steels, structures with high rigidity, and corresponding heat-resistant steels.Characteristics:A Cr16Ni25Mo6 stainless steel electrode with a basic coating, featuring good welding process performance, stable arc, easy slag removal, and aesthetically pleasing weld formation.Power Polarity:Direct current reverse polarity (DC+).Chemical Composition of Deposited Metal (%)Test Item C Mn Si P S Cr Ni Mo Cu N GB/T Standard ≤0.12 0.50～ 2.50 ≤0.90 ≤0.035 ≤0.030 14.0～18.0 22.0～27.0 5.0～7.0 ≤0.75 ≥0.10 Example Value 0.055 1.65 0.34 0.020 0.007 15.85 24.45 5.90 0.11 0.13 Mechanical Properties of Deposited MetalTest Item Rm (MPa) A(%) GB/T Standard ≥610 ≥30 Example Value 655 40Reference CurrentElectrode Specification (mm)Φ2.5Φ3.2Φ4.0Φ5.0Welding Current (A)Flat, Horizontal50～9080～120100～150140～180Vertical, Overhead60～8090～110110～140—Welding Process Key Points:1. Drying Requirement: Electrodes must be baked at 250°C for 1 hour before use and used immediately after baking.2. Use low current and short arc welding as much as possible during welding, with minimal oscillation amplitude. more>

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

Product Description:D107 Hardfacing ElectrodeGB/T 984 EDPMn2-16 GB/T 984 EDPMn2-15Application:Suitable for hardfacing or repairing worn surfaces of low-carbon steel, medium-carbon steel, and low-alloy steel components.Characteristics:D106 is a manganese-type hardfacing electrode with a low-hydrogen potassium coating; D107 is a manganese-type hardfacing electrode with a low-hydrogen sodium coating, offering stable arc performance and easy slag removal.Polarity:D106: AC or DC reverse polarity (AC, DC⁺); D107: DC reverse polarity (DC⁺)Deposited Metal Chemical Composition (%)Test ItemCMnGB/T Standard≤0.20≤3.50Example Value0.143.10Hardfacing Metal HardnessTest ItemHB (4 layers or more)GB/T Standard≥220Reference CurrentElectrode Size (mm)Φ3.2Φ4.0Φ5.0Welding Current (A)90–130120–170160–210Welding Process Guidelines:1. Drying requirement: D106 and D107 electrodes must be baked at 300–350°C for 1 hour before use and used immediately after baking.2. For large workpieces, preheating to around 200°C is recommended, and the surface to be hardfaced should be cleaned of rust and oil contamination. more>

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

Product Description:A307 Stainless Steel Welding ElectrodeGB/T 983 E309-15 AWS A5.4 E309-15 ISO 3581-A-E(22 12)B 4 2 ISO 3581-B-ES 309-15Application:Suitable for welding 06Cr23Ni13 and similar types of stainless steel, dissimilar steels, as well as high-chromium steel, high-manganese steel, etc.Characteristics:An alkaline-coated Cr23Ni13 stainless steel electrode with deposited metal that offers excellent crack resistance and oxidation resistance.Polarity:Direct current reverse polarity (DC+).Chemical Composition of Deposited Metal (%)Test ItemCMnSiPSCrNiMoCuGB/T Standard≤0.150.50–2.50≤1.00≤0.040≤0.03022.0–25.012.0–14.0≤0.75≤0.75Example Value0.0571.300.220.0220.00723.4312.820.0400.035Mechanical Properties of Deposited MetalTest ItemRm (MPa)A(%)GB/T Standard≥550≥25Example Value60038Reference CurrentElectrode Diameter (mm)Φ2.5Φ3.2Φ4.0Φ5.0Welding Current (A)Flat, Horizontal50–9080–120100–150140–180Vertical, Overhead60–8090–110110–140—Welding Process Guidelines:1. Drying requirement: Electrodes must be baked at 250°C for 1 hour before use and used immediately after baking.2. Use low current and short arc welding as much as possible during welding, with minimal oscillation amplitude. more>

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

Product Description:GB/T 983 E312-16 AWS A5.4 E312-16 ISO 3581-B-ES 312-16Application:Suitable for welding various hard-to-weld steel materials prone to cracking or porosity, hardened alloy steels, as well as high-carbon steels, tool steels, and dissimilar metals.Characteristics:A rutile-coated duplex stainless steel electrode with excellent welding process performance, featuring stable arc, minimal spatter, easy slag removal, and aesthetically pleasing weld appearance. The deposited metal contains 40% to 50% ferrite, providing outstanding mechanical properties and crack resistance.Polarity:AC, DC reverse polarity (AC, DC⁺), with DC reverse polarity recommended.Chemical Composition of Deposited Metal (%)Test ItemCMnSiPSCrNiMoCuGB/T Standard≤0.150.50–2.50≤1.00≤0.040≤0.03028.0–32.08.0–10.5≤0.75≤0.75Example Value0.0700.920.800.0300.01028.69.340.0330.046Mechanical Properties of Deposited MetalTest ItemRₘ (MPa)A (%)GB/T Standard≥660≥15Example Value83327Welding PositionsReference CurrentElectrode Diameter (mm)Φ3.2Φ4.0Welding Current (A)Flat, Horizontal80–120100–150Vertical, Overhead70–11090–140Welding Process Guidelines:1. Drying requirement: Electrodes must be baked at 350°C for 1 hour before use and used immediately after baking.2. When using AC welding, spatter is greater, the coating tends to redden, and penetration is shallower; therefore, DC reverse polarity is recommended.3. Use low current and short arc welding as much as possible during welding, with minimal oscillation amplitude. more>

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

Product Description:ZL205A Aluminum Alloy Welding Wire: The "Performance Benchmark" for High-Strength Aluminum Alloy WeldingIn fields such as aerospace structural components, high-end equipment frameworks, and high-pressure vessels, where the strength and reliability of welded joints are extremely demanding, ordinary aluminum alloy welding wires struggle to meet the comprehensive requirements of "high strength + high toughness + fatigue resistance." As a representative of the Al-Cu-Mn series of high-strength aluminum alloy welding wires, ZL205A aluminum alloy welding wire achieves breakthroughs in the strength, fracture toughness, and fatigue resistance of welded joints through its composition design centered on "copper as the primary strengthening element + synergistic effects of multiple trace elements." It has become the "performance benchmark" for welding high-strength aluminum alloy components, providing core technical support for the structural safety of high-end industrial equipment.I. Composition Analysis of ZL205A Aluminum Alloy Welding Wire: The "Genetic Code" of High StrengthThe high-strength performance of ZL205A stems from its precise composition ratio, where each element synergistically contributes to "strengthening mechanisms + performance balance," forming a unique alloy system:1. Core Elements: The Foundation of Strength and Toughness•Aluminum (Al): Matrix element, content ≥86%As the base metal, aluminum imparts low density (approximately 2.7g/cm³) to the welding wire, meeting the lightweight requirements of aerospace and high-end equipment. Simultaneously, aluminum provides a matrix for the solid solution and precipitation of other strengthening elements, ensuring that welded joints achieve high strength while remaining lightweight.•Copper (Cu): Primary strengthening element, content 4.6%-5.3%Copper is the core source of ZL205A's high strength. After welding, through "solution treatment + aging treatment," copper forms GP zones (Guinier-Preston zones) and uniform precipitation of θ' phase in the aluminum matrix, reducing the formation of coarse θ phase (Al₂Cu), further enhancing the yield strength and fatigue resistance of the welded joint (10⁷ cycle fatigue strength ≥120MPa).•Iron (Fe): Strictly controlled ≤0.15%Iron, as an impurity element, can form coarse FeAl₃ brittle phases if excessive, reducing weld toughness. Therefore, ZL205A limits iron content to extremely low levels through process control to avoid damage to welded joint performance by brittle phases.II. Performance Advantages of ZL205A Aluminum Alloy Welding Wire: "Hardcore Strength" for High-End ApplicationsBased on its scientific composition design, ZL205A exhibits four core performance advantages, perfectly meeting the stringent requirements of high-strength aluminum alloy welding:1. Exceptional Mechanical Properties: High Strength and High Toughness Combined•Room Temperature Strength: After T6 heat treatment (solution treatment at 530°C × 2h + water quenching + aging at 165°C × 12h), the welded joint achieves tensile strength ≥420MPa, yield strength ≥380MPa, and elongation ≥8%, far exceeding ordinary Al-Mg series welding wires (tensile strength ≤320MPa) and Al-Si series welding wires (tensile strength ≤280MPa), making it compatible with high-strength aluminum alloy base materials like 2A12 and 7A04.•Low-Temperature Toughness: In a -60°C low-temperature environment, the welded joint's impact toughness (αk) ≥25J/cm², with no significant embrittlement (ordinary aluminum alloys experience a 30%-40% drop in low-temperature toughness, while ZL205A only drops 10%-15%), making it suitable for aerospace low-temperature applications (e.g., aircraft skins, satellite structural components).•Fatigue Resistance: Under stress ratio R=0.1 and 10⁷ cycles, the welded joint's fatigue strength ≥130MPa, 1.5-2 times that of ordinary aluminum alloy welding wires. After surface shot peening, fatigue strength can be further increased to 150MPa, meeting the needs of applications like high-pressure vessels and helicopter rotors that endure long-term alternating loads.2. Excellent Corrosion Resistance: Balancing Strength and Protection•Atmospheric Corrosion: In GB/T 19292.1 neutral salt spray tests (5% NaCl solution, 40°C), after 2000 hours, the weld surface shows only slight discoloration with no pitting or peeling. The corrosion rate is ≤0.02mm/year, superior to most high-strength aluminum alloy welding wires (corrosion rate ≥0.05mm/year).•Stress Corrosion: In a 3.5% NaCl solution with stress level at 80%σs, the stress corrosion fracture time is ≥1000 hours, significantly higher than ordinary Al-Cu series welding wires (≤500 hours), making it suitable for welding high-end equipment in marine environments (e.g., deep-sea detector frames).3. Stable Weldability: Adaptable to Complex Structures•Arc Stability: When using argon arc welding (TIG/MIG), the arc burns stably with spatter rate ≤3% (ordinary Al-Cu series welding wires have spatter rate ≥5%), and droplet transfer is uniform, enabling all-position welding (flat, vertical, overhead), suitable for welding complex aerospace structural components (e.g., aircraft fuselage frames).•Low Hot Cracking Susceptibility: Through the grain refining effects of titanium and zirconium, the solidification temperature range of the weld is narrowed from 50-60°C for ordinary Al-Cu series to 30-40°C, significantly reducing shrinkage stress. The hot cracking tendency is ≤ grade 1 (GB/T 22086 standard), allowing welding of thick-walled high-strength aluminum alloy components with thicknesses of 10-50mm (e.g., high-pressure aluminum alloy storage tanks).4. Uniform Heat-Affected Zone Performance: Minimizing Performance Fluctuations•Due to zirconium's inhibition of recrystallization, the width of the weld heat-affected zone (HAZ) is only 2-3mm (5-8mm for ordinary aluminum alloys), and the tensile strength of the HAZ is ≥400MPa, with a difference of ≤5% compared to the weld strength. This ensures uniform overall performance of the welded joint, avoiding structural failure due to weak HAZ.III. Key Points of ZL205A Aluminum Alloy Welding Wire Welding Process: Precise Control to Ensure PerformanceThe welding process for ZL205A must focus on "protecting strengthening elements and ensuring heat treatment effects." Every step requires strict control to avoid performance loss:1. Pre-Welding Preparation: Laying the Foundation for High-Quality Welding•Welding Wire Pretreatment:◦Surface Cleaning: The welding wire surface easily forms an oxide film (Al₂O₃). Before use, it must be scrubbed along the axis with a stainless steel wire brush to remove the oxide film. Alternatively, chemical cleaning can be used (soaking in 5% NaOH solution at room temperature for 5 minutes → rinsing with water → passivating in 10% nitric acid solution for 3 minutes → rinsing with water → drying at 120°C) to ensure surface cleanliness reaches Sa3 grade.◦Drying: After cleaning, the welding wire should be dried in an oven at 120-150°C for 2 hours to remove adsorbed moisture and prevent porosity during welding (Al₂O₃ reacting with moisture generates H₂, causing porosity defects).•Workpiece Pretreatment:◦Surface Cleaning: The area to be welded and the surrounding 30mm should be wiped with ketone to remove oil, followed by mechanical grinding (80-grit aluminum oxide grinding wheel) to remove the oxide film and reveal metallic luster. For thick-walled parts (≥20mm), sandblasting (grit diameter 0.1-0.2mm) is required to ensure complete oxide film removal.◦Groove Processing: Use CNC milling for groove processing to avoid flame cutting (high temperatures can cause copper loss). For thick-walled parts, an "X-type groove" is recommended, with a groove angle of 60-65°, root face of 1-2mm, and gap of 2-3mm to reduce filler metal usage and welding stress.◦Preheating: For components with thickness >15mm or high rigidity, preheat to 120-180°C (monitored with an infrared thermometer). The preheating range should extend 50mm around the welding area to avoid local overheating and loss of strengthening elements.2. Welding Process Control: Precise Parameters to Ensure Performance•Welding Parameter Selection:ZL205A commonly uses welding wire diameters of 1.6mm, 2.0mm, and 2.4mm, suitable for argon arc welding (TIG/MIG). Parameters should be adjusted based on thickness and welding position, as referenced below:Wire DiameterWelding MethodWelding Current (DCEN)Welding VoltageArgon Flow RateWelding SpeedApplication Scenario1.6mmTIG80-110A10-13V8-10L/min80-120mm/minThin-walled parts (e.g., aerospace skins, thickness 3-8mm)2.0mmMIG120-150A18-22V12-15L/min100-150mm/minMedium-thickness parts (e.g., equipment frames, thickness 8-20mm)2.4mmMIG150-180A22-25V15-18L/min120-180mm/minThick-walled parts (e.g., high-pressure storage tanks, thickness 20-50mm)Key Control Points:•Use direct current electrode negative (DCEN): Connect the welding wire to the negative pole and the workpiece to the positive pole to reduce loss of elements like copper and titanium in the welding wire (copper loss rate ≤1%, titanium loss rate ≤0.5%).•Short arc operation: Arc length ≤1.2 times the wire diameter to avoid air intrusion into the molten pool and reduce nitride (AlN) inclusions (inclusions reduce weld toughness).•Interpass temperature control: For multi-layer welding, interpass temperature ≤150°C, monitored in real-time with an infrared thermal imager to avoid grain coarsening due to excessive interpass temperature.•Operational Techniques:◦For thick-walled parts, use a "multi-layer multi-pass narrow bead" process. Single bead width ≤3 times the wire diameter, each pass thickness ≤3mm, to reduce welding stress concentration.◦Weld along the direction of lower rigidity to avoid excessive restraint stress causing cracks. When welding is interrupted, grind the joint into a 1:8 gentle slope shape and preheat to above 150°C before resuming welding.◦Use argon backing protection on the weld reverse side (flow rate 5-8L/min) to prevent backside oxidation (Al₂O₃ oxide film can affect subsequent heat treatment effects).3. Post-Weld Treatment: Activating Strengthening Performance•Heat Treatment: Key Strengthening Step:◦Solution Treatment: Perform solution treatment within 24 hours after welding (to avoid natural aging causing coarse strengthening phases). The process is 530±5°C × 2-3h (adjusted based on thickness), followed by water quenching (cooling rate ≥50°C/s) to ensure copper is fully dissolved into the aluminum matrix.◦Aging Treatment: Perform aging treatment within 48 hours after solution treatment. The process is 165±5°C × 12-16h, followed by furnace cooling to promote θ' phase precipitation. more>

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

Product Description:A202不锈钢用焊条GB/T 983 E316-16 AWS A5.4 E316-16 ISO 3581-A-E(19 12 2)R 3 2 ISO 3581-B-ES 316-16用途：适用于在有机和无机酸（非氧化性酸）介质中工作的06Cr17Ni12Mo2不锈钢或异种钢的焊接。特性:金红石型药皮的Cr18Ni12Mo2不锈钢焊条，焊接工艺性能优良，具有良好的耐腐蚀、耐热及抗裂性能。电源极性:交流、直流反接（AC、DC+），推荐采用直流反接。熔敷金属化学成分（%）试验项目 C Mn Si P S Cr Ni Mo Cu GB/T标准 ≤0.08 0.50～2.50 ≤1.00 ≤0.040 ≤0.030 17.0～20.0 11.0～14.0 2.0～ 3.0 ≤0.75 例值 0.045 1.40 0.65 0.022 0.009 19.35 12.04 2.52 0.028 熔敷金属力学性能试验项目 Rm（MPa） A(%) GB/T标准 ≥520 ≥25 例值 590 40 more>

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

Product Description:A062 Stainless Steel Welding ElectrodeGB/T 983 E309L-16 AWS A5.4 E309L-16 ISO 3581-A-E(23 12 L)R 32 ISO 3581-B-ES 309L-16Application:Suitable for welding similar types of stainless steel structures, composite steel, and dissimilar steel components in equipment manufacturing such as synthetic fiber and petrochemical industries. Also used for transition layer overlay welding on the inner walls of pressure vessels and welding of internal tower components.Characteristics:Rutile-type ultra-low carbon Cr23Ni13 stainless steel electrode with excellent welding process performance and superior crack resistance.Polarity:AC, DC reverse polarity (AC, DC+), DC reverse polarity is recommended.Deposited Metal Chemical Composition (%)Test Item C Mn Si P S Cr Ni Mo Cu GB/T Standard ≤0.04 0.50～2.50 ≤1.00 ≤0.040 ≤0.030 22.0～25.0 12.0～14.0 ≤0.75 ≤0.75 Example Value 0.024 1.32 0.65 0.021 0.007 23.30 12.90 0.045 0.035 Deposited Metal Mechanical PropertiesTest Item Rm（MPa） A(%) GB/T Standard ≥510 ≥25 Example Value 560 42Reference CurrentElectrode Size (mm)Φ2.5Φ3.2Φ4.0Φ5.0Welding Current (A)Flat, Horizontal50～9080～120100～150140～180Vertical, Overhead60～8090～110110～140—Welding Process Key Points:1.Drying requirement: Electrodes must be baked at 300°C for 1 hour before use and used immediately after baking.2.When using AC welding, spatter is greater, the coating tends to redden, and penetration is shallower. Therefore, DC reverse polarity welding is recommended.3.Use low current and short arc welding as much as possible during welding, with minimal oscillation amplitude. more>

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

Product Description:用途：适用于补焊炉卷轨机上的Cr25Ni20Si2奥氏体耐热钢卷筒及异种钢的焊接。特性:金红石型药皮的Cr25Ni18Mn8不锈钢焊条，焊接工艺性良好，焊缝抗热裂性能优。电源极性:交流、直流反接（AC、DC+），推荐采用直流反接。熔敷金属化学成分（%）试验项目 C Mn Si P S Cr Ni Mo Cu 保证值 ≤0.20 5.0～10.0 ≤1.20 ≤0.030 ≤0.030 23.0～27.0 16.0～21.0 ≤0.75 ≤0.75 例值 0.080 6.18 0.80 0.020 0.006 24.76 18.60 0.045 0.034 熔敷金属力学性能试验项目 Rm（MPa） A(%) 保证值 ≥540 ≥30 例值 580 41参考电流焊条规格（mm）Φ2.5Φ3.2Φ4.0Φ5.0焊接电流（A）平焊、横焊50～9080～120100～150140～180立焊、仰焊60～8090～110110～140—焊接工艺要点:1.烘干要求：焊前焊条须经300℃保温1h，随烘随用。2.采用交流焊接时，飞溅较大、药皮易发红、熔深较浅，因此建议采用直流反接焊接。3.焊接时尽量采用小电流及短弧焊，摆动幅度不宜过大。 more>

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

Product Description:A302 Stainless Steel Welding ElectrodeGB/T 983 E309-16 AWS A5.4 E309-16 ISO 3581-A-E(22 12)R 3 2 ISO 3581-B-ES 309-16Application:Suitable for welding 06Cr23Ni13 and similar types of stainless steel, stainless steel linings, dissimilar steels, as well as high-chromium steel, high-manganese steel, etc.Characteristics: Rutile-type coated Cr23Ni13 stainless steel electrode with excellent welding process performance. The deposited metal exhibits good crack resistance and oxidation resistance. Polarity: AC, DC reverse polarity (AC, DC+). DC reverse polarity is recommended. Chemical Composition of Deposited Metal (%) Test ItemCMnSiPSCrNiMoCuGB/T Standard≤0.150.50～2.50≤1.00≤0.040≤0.03022.0～25.012.0～14.0≤0.75≤0.75Example Value0.0551.450.700.0210.00924.2512.750.350.035 Mechanical Properties of Deposited Metal Test ItemRm (MPa)A(%)GB/T Standard≥550≥25Example Value59540 Reference Current Electrode Size (mm)Φ2.5Φ3.2Φ4.0Φ5.0Welding Current (A)Flat, Horizontal50～9080～120100～150140～180Vertical, Overhead60～8090～110110～140— Welding Process Guidelines: 1. Drying requirement: Electrodes must be baked at 300°C for 1 hour before use and used immediately after baking.2. When using AC welding, spatter is higher, the coating tends to redden, and penetration is shallower. Therefore, DC reverse polarity welding is recommended.3. Use low current and short arc welding as much as possible during welding, with minimal oscillation amplitude. more>

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

Product Description:4043 Aluminum Welding Strip: The All-Round Representative of Versatile Aluminum-Silicon Welding MaterialIn the family of aluminum-based welding materials, the 4043 aluminum welding strip stands out for its balanced performance ratio and broad applicability. As a medium-silicon aluminum-silicon alloy welding material, it overcomes the insufficient crack resistance of pure aluminum welding materials while avoiding the limited plasticity of high-silicon welding materials. It has become the preferred material for welding operations in various industries such as shipbuilding, automotive, and light industry, earning the title of the "all-around welding partner" in the industrial field.I. Medium Silicon Ratio Chemical Composition: The Foundation of Balanced PerformanceThe core advantage of the 4043 aluminum welding strip stems from its scientific composition design, particularly the medium silicon content that forms the basis of its balanced performance. The welding strip primarily consists of aluminum (Al) as the base, with silicon (Si) content precisely controlled between 4.5% and 6.0%. This ratio ensures both good molten pool fluidity and necessary plasticity for the weld seam. At the same time, impurity elements are strictly controlled: iron (Fe) ≤ 0.8%, copper (Cu) ≤ 0.30%, manganese (Mn) ≤ 0.15%, magnesium (Mg) ≤ 0.05%, zinc (Zn) ≤ 0.10%, and other single impurities ≤ 0.05%, with a total ≤ 0.15%. This composition system fully complies with standards such as GB/T10858 and AWS A5.1, providing fundamental assurance for its stable performance in various welding scenarios.Compared to the high-silicon 4047 welding strip (silicon content 11.0%-13.0%), the medium silicon content of 4043 achieves a better balance between mechanical properties and process performance, particularly in welding scenarios requiring certain ductility.II. Versatile Performance Characteristics: Core Advantages for Multiple Scenarios(I) Excellent Crack Resistance and Process StabilityThe most prominent advantage of the 4043 aluminum welding strip is its strong resistance to hot cracking, thanks to its reasonable aluminum-silicon ratio and narrow solidification range. During welding, the arc burns stably with minimal spatter, and the molten pool has moderate fluidity without "sagging," allowing it to evenly fill various welding gaps and effectively reduce common defects such as porosity and lack of fusion. Its melting point range is 573-625°C, creating a reasonable temperature difference with most aluminum alloy base materials, avoiding overheating deformation of the base material while ensuring full fusion of the welded joint. It performs stably in various processes such as argon arc welding and gas welding.Compared to the 4047 welding strip, 4043 has a more gradual solidification speed, resulting in more uniform thermal stress distribution in multi-layer welding of thick-walled components, making it particularly suitable for welding heat-treatable aluminum alloys like 6061.(II) Balanced Mechanical and Corrosion Resistance PropertiesIn terms of mechanical properties, the welded joints of the 4043 aluminum welding strip exhibit excellent overall performance: although ductility is slightly lower than that of pure aluminum welding materials, tensile strength and hardness are significantly improved, fully meeting the load requirements of general structural components. Its weld strength is highly compatible with 3000 series, 2000 series aluminum alloys, and cast aluminum base materials, ensuring excellent integrity of the welded joint.In terms of corrosion resistance, the weld structure formed by the 4043 welding strip is uniform and dense, capable of resisting erosion from air, water, and general chemical media. It should be noted that when welding high-magnesium alloys, brittle Mg₂Si phases may form, reducing corrosion resistance and plasticity. Therefore, it is more suitable for welding most aluminum alloys except aluminum-magnesium alloys. Additionally, its welded joints have good thermal conductivity, meeting the functional requirements of heat exchange components such as radiators.III. Diverse and Flexible Specifications: Adaptability for Industrial ProductionThe 4043 aluminum welding strip is designed to fully meet the needs of industrial mass production, offering a full range of options from precision to conventional specifications.(I) Thickness Specifications: Covering Micro-Welding to Heavy-Duty WeldingConventional thicknesses include 0.10mm, 0.20mm, 0.30mm, and 0.50mm, with thin specifications suitable for precision welding such as bicycle frames and electronic components. For heavy-duty applications like ship components and pressure vessels, thick specifications ranging from 1.0mm to 3.0mm are available. Some manufacturers support custom production, with thickness ranges extending from 0.08mm to 4.0mm, available in coil or straight strip forms of different diameters to meet the feeding requirements of automated welding production lines.(II) Width and Packaging: Adapting to Diverse Production ScenariosWidth specifications cover conventional sizes such as 100mm, 150mm, 200mm, and 300mm. Wide products are suitable for large plate splicing, reducing the number of welds, while narrow slit products are ideal for repairing small components, minimizing material waste. Packaging forms are flexible, including 9kg large-diameter coils (D300), 2kg standard coils (D200), and 0.5kg small rolls (D100), meeting the production needs of different capacity scales.IV. Cross-Industry Applications: The Stage for All-Round Welding Materials(I) Transportation and Heavy Equipment ManufacturingIn the automotive industry, the 4043 aluminum welding strip is widely used for welding components such as radiators, intercoolers, and aluminum alloy windows, particularly suitable for connecting 6061 series aluminum alloys. In shipbuilding, it undertakes welding tasks for aluminum hulls and cabin components, with its crack resistance effectively addressing the stress corrosion challenges of the marine environment. Aluminum train carriages, lightweight frames for flatbed trailers, and other applications also rely heavily on its stable welding performance.(II) Light Industry Manufacturing and General IndustryIn the light industry sector, the 4043 aluminum welding strip is a core welding material for bicycle frames and sports equipment, with its balanced strength and plasticity ensuring product durability and safety. In the food and chemical industries, its low impurity content and corrosion resistance meet hygiene standards for welding storage tanks and containers. Additionally, in furniture manufacturing and container production, it is an ideal choice for mass production due to its low cost and ease of operation.Compared to the 4047 welding strip, which is mainly used for brazing, the 4043 is more widely applied in fusion welding scenarios, particularly in welded components requiring subsequent processing.V. Development Prospects Under Technological UpgradesWith the advancement of industrial lightweighting and green manufacturing, the 4043 aluminum welding strip is facing dual opportunities for performance upgrades and application expansion. Future development will focus on three major directions: first, performance optimization, using micro-alloying technology (such as adding trace titanium) to refine grains, improving weld toughness while maintaining crack resistance to meet the high-strength requirements of new energy vehicles; second, scenario expansion, developing more weather-resistant derivative products for new energy fields such as photovoltaic brackets and energy storage equipment to address outdoor environmental corrosion issues; third, process innovation, adopting vacuum melting and continuous rolling technology to reduce internal inclusions, improve the surface smoothness of the welding strip, and meet the high-precision requirements of automated welding.In an era where high-end welding materials are constantly emerging, the 4043 aluminum welding strip, with its irreplaceable versatility and cost-effectiveness, will continue to hold an important position in the mid-to-high-end welding market, serving as a solid support for industrial upgrading. more>

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

Product Description:GB/T 983 E347-15 AWS A5.4 E347-15 ISO 3581-A-E(19 9 Nb)B 4 2 ISO 3581-B-ES 347-15Application:Suitable for welding stainless steel structures such as 06Cr18Ni11Nb and 06Cr18Ni11Ti.Characteristics:Basic coated Cr19Ni10Nb stainless steel electrode with excellent welding process performance and intergranular corrosion resistance.Polarity:Direct current reverse polarity (DC+).Deposited Metal Chemical Composition (%)Test Item C Mn Si P S Cr Ni Mo Cu Nb+Ta GB/T Standard ≤0.08 0.50～ 2.50 ≤1.00 ≤0.040 ≤0.030 18.0～21.0 9.0～11.0 ≤0.75 ≤0.75 8×C～1.00 Example Value 0.058 1.90 0.30 0.021 0.007 19.75 9.58 0.068 0.032 0.48 Deposited Metal Mechanical PropertiesTest Item Rm（MPa） A(%) GB/T Standard ≥520 ≥25 Example Value 640 38 Reference CurrentElectrode Size (mm)Φ2.5Φ3.2Φ4.0Φ5.0Welding Current (A)Flat, Horizontal50～9080～120100～150140～180Vertical, Overhead60～8090～110110～140—Welding Process Key Points:1. Drying requirement: Electrodes must be baked at 250°C for 1 hour before use and used immediately after baking.2. Use low current and short arc welding as much as possible during welding, with minimal oscillation amplitude. more>

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

Product Description:A002LT Stainless Steel Welding ElectrodeGB/T 983 E308L-16 AWS A5.4 E308L-16 ISO 3581-A-E (19 9 L) R 3 2 ISO 3581-B-ES 308L-16Application:Suitable for welding 304L and 308L austenitic stainless steels operating at ultra-low temperatures of -196°C.Characteristics:A rutile-coated ultra-low carbon stainless steel electrode with excellent welding process performance. It features a soft arc, good slag removal, minimal spatter, aesthetic bead appearance, and resistance to reddening. The weld metal exhibits good mechanical properties and intergranular corrosion resistance, particularly with excellent impact toughness at -196°C.Power Polarity:AC, DC reverse polarity (AC, DC⁺), with DC reverse polarity recommended.Deposited Metal Chemical Composition (%)Test Item C Mn Si P S Cr Ni Mo Cu GB/T Standard ≤0.040 0.50～2.50 ≤1.00 ≤0.040 ≤0.030 18.0～21.0 9.0～12.0 ≤0.75 ≤0.75 Example Value 0.030 1.00 0.68 0.013 0.003 18.40 10.65 0.025 0.020 Deposited Metal Mechanical PropertiesTest Item Rₘ (MPa) A (%) KV₂ (J) -196℃ GB/T Standard ≥510 ≥30 —— Example Value 560 46 39 more>

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

Product Description:D687 Hardfacing ElectrodeGB/T 984 EDZCr-D-15Application:Suitable for hardfacing applications requiring strong wear resistance, such as cone bit shafts, coal augers, elevator buckets, crusher rolls, pump casings, mixer blades, etc.Characteristics:A low-hydrogen sodium-type coated Cr-C type cast iron hardfacing electrode with stable arc, minimal spatter, low slag content, and easy slag removal. The hardfaced layer is difficult to machine even with alloy cutting tools and can only be ground. The microstructure consists of martensite and coarse composite carbides.<img src="https://img-i-album.toocle.com/view/2025/10/12/29/68eb8646dc729.jpg" style="max-width:100%;"/>Polarity:DC reverse polarity (DC+)Chemical Composition of Deposited Metal (%)Test ItemCMnSiCrBTotal Other ElementsGB/T Standard3.00～4.001.50～3.50≤3.0022.00～32.000.50～2.50≤6.00Example Value3.752.302.3529.001.20——Hardfaced Metal HardnessTest ItemHRC (4 layers or more)GB/T Standard≥58Reference CurrentElectrode Size (mm)Φ3.2Φ4.0Φ5.0Welding Current (A)90～130120～170160～210Welding Process Key Points:1. Drying requirement: Electrodes must be baked at 300～350℃ for 1 hour before use and used while still warm.2. Preheating temperature for hardfacing workpiece:400～600℃,and remove rust, oil, oxides, etc., from the workpiece.3. The length of each hardfacing pass should preferably not exceed 50～70mm.4. After welding, the workpiece should be tempered at 600～700℃ for 1 hour and then slowly cooled, or immediately placed in a dry and preheated sandbox or in grass ash for slow cooling. more>

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

Product Description:I. Overview of A357 Aluminum Alloy Welding WireA357 aluminum alloy welding wire is a high-quality cast aluminum alloy with excellent comprehensive properties, widely used in aerospace, automotive, shipbuilding, and other fields. The composition design of this alloy provides high strength, good corrosion resistance, and weldability, meeting the requirements for complex components and high-performance products.II. Main Components of A357 Aluminum Alloy Welding Wire1. Silicon (Si): Silicon is one of the primary alloying elements in A357 aluminum alloy, with a content typically ranging from 6.5% to 7.5%. The addition of silicon improves the fluidity of the alloy, reduces the tendency for hot cracking, and thereby enhances casting performance. Additionally, silicon refines the matrix structure, increasing the strength and hardness of the alloy.2. Magnesium (Mg): The magnesium content in A357 aluminum alloy usually ranges from 0.3% to 0.45%. The addition of magnesium primarily forms the strengthening phase Mg2Si, improving the heat treatment effectiveness of the alloy. Moreover, magnesium enhances the corrosion resistance and weldability of the alloy.3. Titanium (Ti): Titanium is a trace element in A357 aluminum alloy, with its content typically controlled between 0.1% and 0.2%. The addition of titanium mainly refines the grain structure, improving the strength and plasticity of the alloy. It also reduces the alloy's susceptibility to hot cracking and increases casting yield.4. Strontium (Sr): Strontium is present in low amounts in A357 aluminum alloy and is typically used as a modifier. The addition of strontium alters the morphology of eutectic silicon, transforming it from coarse flake-like structures to fine fibrous ones, thereby enhancing the strength and elongation of the alloy.III. Combined Effects of A357 Aluminum Alloy Welding Wire ComponentsThe composition design of A357 aluminum alloy aims to achieve excellent comprehensive properties. The rational ratio of alloying elements such as silicon, magnesium, and titanium ensures that the alloy maintains high strength while exhibiting good plasticity and toughness. Additionally, these components effectively improve the alloy's corrosion resistance and weldability, meeting the demands of complex working conditions.IV. Application Fields of A357 Aluminum Alloy Welding WireThanks to its outstanding comprehensive properties, A357 aluminum alloy is widely used in aerospace, automotive, shipbuilding, and other industries. For example, in the aerospace sector, A357 aluminum alloy can be used to manufacture structural components that withstand high loads and complex stresses. In the automotive industry, this alloy is suitable for producing key parts such as engine blocks and cylinder heads. In shipbuilding, A357 aluminum alloy is favored for its excellent corrosion resistance.Summary: The composition design of A357 aluminum alloy welding wire endows it with excellent properties such as high strength, good corrosion resistance, and weldability. These characteristics make A357 aluminum alloy highly promising for a wide range of applications. With continuous advancements in technology and improvements in processes, it is believed that A357 aluminum alloy welding wire will further demonstrate its unique advantages in more fields.For detailed information on A357 aluminum alloy welding wire, contact the customer service of Xingtai Yuguang Welding Materials Co., Ltd. more>