15CrMo steel plate composition, properties, delivery conditions, and application advantages

15CrMo steel plate is an alloy structural steel plate with high thermal strength, oxidation resistance, hydrogen corrosion resistance, and good comprehensive mechanical properties. The following are the performance indicators of 15CrMo steel plate:

1. Chemical composition: The chemical composition of 15CrMo steel plate mainly includes carbon (C), silicon (Si), manganese (Mn), sulfur (S), phosphorus (P), chromium (Cr), nickel (Ni), copper (Cu), and molybdenum (Mo). Among them, the carbon C content is 0.12–0.18%, silicon Si content is 0.17–0.37%, manganese Mn content is 0.40–0.70%, sulfur S allowable residual content is 0.035%, phosphorus P allowable residual content is 0.035%, chromium Cr content is 0.80–1.10%, nickel Ni allowable residual content is 0.030%, copper Cu allowable residual content is 0.030%, and molybdenum Mo content is 0.40–0.55%.

2. Mechanical properties: The mechanical properties of 15CrMo steel plate include tensile strength, yield strength, elongation, reduction of area, impact energy, impact toughness value, and hardness. The tensile strength is 440 MPa, yield strength is 295 MPa, elongation is 22%, reduction of area is 60%, impact energy is 94 J, impact toughness values are 118 J/cm², and hardness is 179 HB.

3. Surface quality: The surface quality requirements for 15CrMo steel plate are relatively high. It should not have defects such as cracks, folds, scars, inclusions, delamination, or embedded iron oxide scale. Local defects should be removed, ensuring the minimum allowable dimensions of the steel. Minor scratches and indentations that do not exceed half of the nominal dimensional tolerance from the actual size are allowed.

4. Delivery condition: 15CrMo steel plate is typically delivered in normalized and tempered condition by default, but it can also be customized according to other additional technical requirements as needed.

5. Applications: Due to its good high-temperature resistance, low-temperature resistance, and corrosion resistance, 15CrMo steel plate is widely used in alloy pipe structural components, petroleum, chemical, power, boiler, and other industries.

6. Weldability: The weldability of 15CrMo steel plate is relatively poor. Due to the high content of Cr, C, and other alloying elements, the steel has a pronounced tendency to harden. During the welding process, it is necessary to control parameters such as welding current and welding speed to ensure welding quality.

In summary, 15CrMo steel plate has excellent mechanical properties, surface quality, and high strength, making it widely used in various industries. In practical applications, it is necessary to select appropriate welding processes and parameters based on specific requirements to fully utilize its performance advantages. During the ordering process, the buyer needs to provide specific dimensions, specifications, and other information to ensure smooth procurement and use.