4140 mod 18-22HRc

1% Chromium-Molybdenum Through Hardening Steel for Oilfield Applications

Surcharge

£492.09 per tonne

Surcharge Price History for 4140 mod 18-22HRc

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 18-22HRc 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, but 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. 

This grade is also available in 30-36HRc condition for higher strength applications.

Size Range

32mm - 860mm Dia

Typical applications of 4140 mod 18-22HRc grade steel

  • Tool joints in drill stem assemblies 
  • Oil & gas applications for sour service

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)

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

Services

Stock Availability

To discuss your requirements or to find out what stock is currently available of this grade, click the button below.