4140 mod 30-36HRc

1% Chromium-Molybdenum Through Hardening Steel

Surcharge

£492.09 per tonne

Surcharge Price History for 4140 mod 30-36HRc

NOV 21 FEB 22 MAY 22 AUG 22 TODAY
£515.58 £514.56 £771.26 £642.00 £492.09

Product Method

Rolled or Forged

Finishes

Black Bar or Bright Bar

Description

4140 mod 30-36HRc grade steel is a chromium-molybdenum steel used widely for drilling and completion parts in downhole applications.

It is a higher carbon version of 4130 resulting in greater strength and ruling sections. This grade can easily achieve yield strengths of 110KSI, however it should not be used in sour service environments above 22HRc (approx 80KSI Yield Strength).

4140 has poor weldability due to the risk of weld cracking, however machinability is fair and forgeability is very good.

Size Range

32mm - 240mm Dia

Typical applications of 4140 mod 30-36HRc grade steel

  • Tool joints in drill stem assemblies 

Similar Grades

BS 970
708M40
£503.61
709M40 / EN19
£549.11
European
42CrMo4
£514.99
41Cr4
£411.26
SAE/AISI
B7
£491.75

Grades for Potential Substitution (Lesser)

BS 970
945M38
£652.06

Grades for Potential Substitution (Greater)

BS 970
817M40 / EN24
£968.58
826M40 / EN26
£1317.98
SAE/AISI
4145 mod
£492.09
4340
£1000.28

Services

Stock Availability

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