Specifications

structural steel 4140:
1.Hor-rolled, forged, black surface,Hardness: <=220HB
2.Large stock with best price

  structural steel 4140: 

 

1.Grade

Alloy steel bar AISI 4140 / GB 42CrMo / DIN 1.7225/42CrMo4 / JIS SCM440

 

2.Round bar Size:

Diameter :12-600mm * Lenght: 2000mm-7500mm

 

3. Delivery condition:

 Hor-rolled, black surface,Hardness: ≤220HB  

 

4.Chemical Composition (%)(For reference Only)

C	Si	Mn	P≤	S≤	Cr	Mo	Ni
0.38-0.45	0.17~0.35	0.60-0.90	0.018	0.030	0.90-1.20	0.15-0.30	≤0.25

 

5.Application:

Mainly used for making various kinds of machinery,automobile,mining spare part.