4145H Structural Steel Properties

Steel for petroleum drill collars, can be used for heavy-weight drill pipes. The raw material steel for integral heavy-weight drill pipes is AISI 4145H alloy structural steel. The production process strictly adheres to the SY/T5146-1997 standard. Heavy-weight drill pipes are medium-weight drilling tools similar to drill pipes, with a wall thickness greater than that of drill pipes but smaller than that of drill collars. They feature specially extended drill pipe joints connected to the thick-walled pipe body. They are typically added between the drill pipe and drill collar in the drill string assembly to prevent sudden changes in the cross-section of the drill string and reduce fatigue in the drill pipe.

 

4145H Steel for Petroleum Drilling Tools

 

Produced using electric arc furnace + external refining

 

4145H

 

Material Grade: 4145 H

 

Standard: AISI - American Iron and Steel Institute Standard

 

Country and Region: USA

 

Steel Group: Structural Steel

 

Subcategory: AISI 4145H Steel

 

Note: Chromium-Molybdenum H-Steel

 

Chemical Composition (%)

 

Element

 

Min

 

Max

 

C

 

0.4200

 

0.4900

 

Si

 

0.1500

 

0.3500

 

Mn

 

0.6500

 

1.1000

 

P

 

0.0350

 

S

 

0.0400

 

Cr

 

0.7500

 

1.2000

 

Mo

 

0.1500

 

0.2500

 

Applications

 

Used in directional drilling, it allows for high-speed drilling with lower torque, reducing wear and breakage of the drill string. Due to its lower rigidity compared to drill collars and smaller contact area with the wellbore, it is less prone to differential sticking. 20CrMnTi 30CrMnTi 20CrMnTi round steel

Mold steel Cr12, Cr12MoV, Cr12Mo1V1, H13, 718#, P20, 5CrNiMo, 5CrMnMo, CrWMn

 

Tool steel 9SiCr, 9Cr2, 7CrSiMnMoV, 5-6CrW2Si, 8Cr3, 9Mn2V, 4Cr5W2VSi

 

Tool steel 30Cr3W, 4Cr2MoVNi, 3Cr2WMoVNi, SKD11

 

Alloy structural steel 20-30CrMnTi, 20CrNiMo, 15Cr2Mo1, 15-42CrMo

 

Alloy structural steel 20-40Cr, 35CrMoV, 20CrNi2MoA, 20-50CrV

 

Alloy structural steel 20MnV, 20-40CrMnMo, 20-35CrMnSi, 38CrSi, 38CrMoAl, 20-40CrNi

 

Alloy structural steel 45CrNiMoVA, 12-37CrNi3, 12-20Cr2Ni4A, 18CrNiMo7-6, 17CrNiMo

 

Alloy structural steel 40CrNiMo, 37SiMn2MoV, 19-50Mn2, 25Cr2MoV, 20SiMn2MoV, 12CrNi2

 

Alloy structural steel 12Cr1MoV, 12-37CrNi3MoA, 20Ni4MoA, 35SiMn, 35CrNi3W, 20CrNiMoH

 

Alloy structural steel 15-40CrMn, 25Cr2Mo1V, 45MnMo, 40CrMoV, 60CrMoV, 27CrMoTi

 

Alloy structural steel 34CrNiMo6, 30CrNi2MoV, 18CrNiMnMoA, 17-34Cr2Ni2Mo

 

Alloy structural steel 30Cr1Mo1V, 20CrNiMo1V, 18CrNiMo7-6

 

Alloy structural steel: 39CrNiMo3, 30CrNiMo8, 17CrNiMo6, 31CrMoV9, 18CrNiMo5, 18CrMnNiMoV

 

Alloy structural steel 42CrNiMoV, 34CrNi2MoV, 40CrNi2Mo

 

Spring steel: 60Si2Mn

 

Carbon tool steel: T8-T10A

 

Heat-resistant steel 1Cr5Mo, 4Cr10Si2Mo, 4Cr9Si2

 

Carbon steel 20-60#, 15-65Mn

 

Stainless steel 2-4Cr13, 4Cr13MoV

 

Bearing steel GCr15, GCr15SiMn, G20CrNiMoA, G20CrNi2MoA, G20CrNi4

 

Roll steel 9Cr2Mo, 9Cr2MoV, 86CrMoV7, 9CrV

 

American standard special steel forged rounds 1045, 1008, 5140, 4140, 13210, 52100, 1335, 4130, 6470, 4118, 3240

 

Metal supply 5CrNiMoV, 080M40, 21CrMoV5-11, 20SiMn2Mo2, 16CrNiMo16, Cr5Mo1V

 

AMS6302, 5Cr3Mn1SiMoV, 18CrNiMo5, 9Cr1Mo, G56NiCrMoV, 20MnCr5, 28Mn6, 17CrNi6-6, 16MnCrB5, AISI4130, X45NiCrMo4, 4Cr3Mo3SiV, EN-36C, 39CrNi3Mo, SNCM630, SNCM439, 30CrNiMo8V, 34CrNiMo6V, 18CrNiMo7-6, 21CrMoV-B2, A350, 32CrMo12, SCM420H, EN-24, Q390D, 34CrNo1, SCM415, 5NiCrMoV7, 20Mn5N, 655M13, 709M40, 817M40, 835M30, SACM645, 655M13, 16MnCr5A, 18CrNiMo7-6BBBBG, EN-25, AISI9315, 30CrNiMo8, X210CrW12, A2, H12

 

Japanese standard: S20C, S45C, S40C, SUJ2, SCr415, SCr440, SCM420, SCM440, SACM645, SUP10, S30C, SWRH18, SMn433, SCM435

  Korean standard: SM45C, SM58C, SWRCH30K, SM58C, SMn420, SCr415, SCM418, SCM440, SCM435, SMnC420, SNC415, SNC236, STB2, STD11, STF4.

  American steel: D6, D3, D2, A2, A6, A8, M4, 3V, 10V, 01, H13, H23, H42, A2, A5, A6, A10, D2, D3, D7, O1, O2, O6, S1, S2, S6, P2, P3, P20, F1, F2, L2, L3, L6, T1, F2, F8, T15, M1, M2, M30, M6, HAP-10, HAP-60, KHA, 33N, 1005, 1018, 1020, 1035, 1042, 1053, 1069, 1071, 1086, 1095, 1513, 1524, 1548, 1566, 1572, M1008, M1020, 2317, 2340, 2512, 3115, 3135, 3245, 3450, 4012, 4024, 4121, 4150, 4608, 4715, 4820, 5015, 5120, 6115, 6195, 7260, 8120, 8622, 8742, 9254, 9260

 

Russian standard: CT3CPX, CT6CPX, 20T2, 45T2, 35X, 40X, 50X, 15XM, 38XC, 30XMA, 38XM, 40XMΦA, 40XΦA, 18XT, 20XH, 40XH, 20XH3A, Y7-1.

 

German standard: C45, 100Cr6, 41Cr4, 20Mn5, 13CrMo44, 42CrMo4, 20Cr4, 18NiCr8, 34CrAlMo5, 36NiCr6, C60.

 

French standard: XC45, XC55, C22E, C45E, 20M5, 40M5, 18C3, 42C4, 42CD4, 18CD4.

 

35CD4, 50CV4, 100C6, 55NCDV7, Z200C12, 1054WC13, XC12, 32M5, SCr420H, SCr445, SMn420

 

Supply of British standard export tax rebate special steel forged rounds: 050A20, 080M46, 080A20, 030A52, 150M19, En46, 527A19