Low alloy 4145: ASTM A29 (VO1.05)
AISI 4145 low alloy steel containing 0.20% Molybdenum is widely used particularly throughout oil patch applications. Similar to 4140 which has a lower carbon level it has improved hardenability and is more is commonly used in the higher strength ?110 KSI 0.2% PS condition.
Larger diameters are often supplied with higher Molybdenum level, 0.35% max and may be referred to as a "Drill Collar" analysis.
The hardenability limitations of this grade (depth to which it will harden / obtain the specified mechanical properties after heat treatment) must always be taken into account when designing and selecting equipment.
Condition: Hardened and Tempered to 22 HRC max
|U.T.S||100 KSI Min||(689 N/mm2)|
|0.2% Proof Stress||80 KSI Min||(551 N/mm2)|
|Red of Area||40 %|
Condition: Hardened and Tempered to 30-36 HRC max
|U.T.S||130 KSI Min||(896 N/mm2)|
|0.2% Proof Stress||110 KSI Min||(758 N/mm2)|
|Red of Area||30 %|
|Size range: 1”∅ - 14”∅|
Primarily manufactured in:
- Dubai, UAE
- Edmonton, Canada
- Houston, Texas
- Sheffield, England