4140 mod 30-36HRc

1% Chromium-Molybdenum Through Hardening Steel

Surcharge

£463.06 per tonne

Surcharge Price History for 4140 mod 30-36HRc

AUG 23 NOV 23 FEB 24 MAY 24 TODAY
£502.44 £511.90 £488.23 £446.19 £463.06

The surcharge data provided is based on the information available to us and represents an average of the surcharge mechanisms taken from various global steel producers. It is intended to only provide an indication of market movements and does not necessarily reflect the specific surcharges applied to individual material batches.

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
£470.81
709M40 / EN19
£509.31
European
42CrMo4
£480.44
41Cr4
£393.06
SAE/AISI
B7
£462.75

Grades for Potential Substitution (Lesser)

BS 970
945M38
£564.56

Grades for Potential Substitution (Greater)

BS 970
817M40 / EN24
£780.00
826M40 / EN26
£1029.50
SAE/AISI
4145 mod
£463.06
4340
£796.81

Services

Stock Availability

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