SAE 4140 Flat Steel Very good machinability High toughness High creep strength ISO 9001:2008 certificated

SAE 4140 Flat Steel

1. Equivalent grades: DIN1.7225 /42CrMo4

2. Chemical composition (%)

Grade	C	Si	Mn	Cr	Mo	P	S
4140	0.38-0.43	0.40max	0.60-0.90	0.90-1.20	0.15-0.30	0.035max	0.035max

3. Specification:

Steel Properties		special alloy steel, engineering steel supplied in quenched and tempered conditions. Very good machinability. High toughness. High creep strength. Repeated impact resistant capability.
Applications		components with high requirements on toughness, e.g. gear wheels, pinions, connecting rods, parts for mechanical engineering .
Delivery condition		annealed/quenched and tempered

4. Heat Treatment:

 

5. Production:

6. Quality Control: