Specifications

4140 steel hardness
1.4140/1.7225/4340/1.6582
2.hot rolled,annealing or pre-hardened
3.steel sheet or round bar
4.black

4140 Steel Hardness

4140/1.7225 HIGH ALLOY CHROMIUM NICKEL STEEL

1. Application:
Commonly used in high strength, cross-section of a larger size of the shaft, gears, connecting rods, etc.

2. Specification:
Round Bar: Diameter 14-800mm, length 2000-7500mm
Steel plate:T14~100mm

 

3. Delivery Condition:
Hot Rolled/Forged/Cold Drawn, Annealed, Black surface, 100% Ultrasonic test.

4. Delivery Time: 10-30 days.

5. Payment Terms: T/T OR L/C, Prepay 30% deposit.

 

 

 

6.Inspection:SEP 1921-84 GR.3 CLASS C/C

 

 

 

Grade:
GB	DIN	AISI	JIS
42CrMo	1.7225	4140	SCM440
Chemical Composition(for reference only) (%)
C	Si	Mn	Cr	Mo	P	S	Cu
0.38~0.45	0.17~0.37	0.50~0.80	0.9~1.2	0.15~0.25	≤ 0.035	≤ 0.035	≤ 0.30