4140 mod 18-22HRc
1% Chromium-Molybdenum Through Hardening Steel for Oilfield Applications
Surcharge
£597.94 per tonne
Surcharge Price History for 4140 mod 18-22HRc
| FEB 22 | MAY 22 | AUG 22 | NOV 22 | TODAY |
|---|---|---|---|---|
| £514.56 | £771.26 | £642.00 | £492.09 | £597.94 |
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