SAE4140 1.7225 SCM440 42CrMo Alloy Mechanical Strcuture Round Steel

• Standard: DIN, JIS, AISI, ASTM, GB, BS
• Technics: Hot Rolled
• Application: Structural Steel Bar
• Surface: Black
• Alloy: Alloy
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Free Cutting Steel, Mold Steel
• Model NO.: SAE4140/42CrMo/1.7225/SCM440
• Size: Diameter: 20-450mm
• Delivery condition: hot rolled black surface
• Delivery Times: 7days
• Condition: stock
• Shape: Round bar
• Quality Assurance: 100% UT passed
• Trade term: FOB/CIF
• Transport Package: Standard/Customized
• Specification: standard/customized
• Trademark: customized
• Origin: China
• HS Code: 7228300000
• Production Capacity: 1000t/Month

Product Description

SAE4140 1.7225 SCM440 42CrMo Alloy Mechanical Strcuture Round Steel

1. Chemical Composition

Grades	C	Si	Mn	P	S	Cr	Mo	Cu	Ni
4140	0.38-0.45	0.17-0.37	0.5-0.8	≤0.035	≤0.035	0.9-1.2	0.15-0.25	≤0.3	≤0.035
42CrMo	0.38-0.45	0.17-0.35	0.5-0.8	≤0.035	≤0.035	0.9-1.2	0.15-0.25	≤0.03	≤0.03
440	0.38-0.43	0.15-0.35	0.6-0.85	≤0.03	≤0.03	0.9-1.2	0.15-0.3	≤0.3	≤0.25

2. Heat Treatment

Quenching			Tempering
Heating Temperature/ºC	Cooling	Hardness/HRC	Heating Temperature/ºC	Cooling	Hardness/HRC
820-840	Oil	≥53	450-650	Air	25-40

3. Features

A.Belong to the ultra-high strength steel

B. High strength and toughness
C. Good hardenability

4. Stock Size

Plate	Thickness	20-120mm
	Width	2200mm
	Length	4000-10000mm
round bar	Diameter	16-450mm
	Length	4000-10000mm

5. Product photos

6. Application