AISI 4145H-110KSI low alloy tube pipes
Low alloy 4145: ASTM A29 (VO1.05)
General scope
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 Contact us:Tianjin Forwell Energy Equipment
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.
C | Si | Mn | P | S | Cr | Mo | Fe | |
Min | 0.43 | 0.15 | 0.75 | • | • | 0.80 | 0.15 | 0.00 |
Max | 0.48 | 0.35 | 1.00 | 0.035 | 0.040 | 1.10 | 0.25 | 0.00 |
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) |
Elongation | 20 % | |
Red of Area | 40 % |
Condition: Hardened and Tempered to 30-36 HRC max
NACE MR0175 limits the supply hardness to 22HRC max. | ||
U.T.S | 130 KSI Min | (896 N/mm2) |
0.2% Proof Stress | 110 KSI Min | (758 N/mm2) |
Elongation | 13 % | |
Red of Area | 30 % | |
