Name: alloy structural steel
 
Brand: 37 simn2mov
 
Standard: GB/T 3077-1988
 
Low characteristics and scope of application:
 
Is a kind of comprehensive performance excellent senior quenched and tempered steel, high hardenability, high strength and toughness after quenched and tempered. with
 
Used in the manufacture of large cross section under heavy load of conditioning parts and surface quenching parts, such as heavy machinery axle, gear. Rotor. Connecting rod and high-pressure seamless steel tube, etc., used for high pressure vessel in the petroleum chemical industry. Large bolts, etc. The steel used for - 20-520 ℃ temperature range, working temperature below 450 ℃ can be made up of large bolt fasteners, can also be used instead of 35 crmo, 40 crnimo steel use, this kind of steel quenching. Low temperature and can be used for ultra-high strength steel after tempering.
 

●化学成份：

　　碳 C ：0.33～0.39

　　硅 Si：0.60～0.90

　　锰 Mn：1.60～1.90

　　硫 S ：允许残余含量≤0.35

　　磷 P ：允许残余含量≤0.35

　　铬 Cr：允许残余含量≤0.30

　　镍 Ni：允许残余含量≤0.30

　　铜 Cu：允许残余含量≤0.30

　　钒 V ：0.05～0.12

    钼 Mo：0.40～0.50