1.7225 SAE4140 42CrMo SCM440 Hot Rolled Black Surface Alloy Mechanical Steel Round Bar

• Standard: DIN, JIS, AISI, ASTM, GB, BS
• Technics: Hot Rolled
• Application: Tool 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
• Delivery condition: hot rolled black surface
• Diameter: 10-500mm
• Quality Assurance: 100% UT passed
• Delivery Time: 7 days
• Condition: ready stock
• Transport Package: Standard/Customized
• Specification: standard/customized
• Trademark: customized
• Origin: China
• HS Code: 7225401000
• Production Capacity: 1000t/Month

Product Description

1.7225 SAE4140 42CrMo SCM440 Hot Rolled Black Surface Alloy Mechanical Steel Round Bar

1. Features

   1. Belong to the ultra-high strength steel

   2. High strength and toughness
   3. Good hardenability

2. Similar Standards

Chinese	American	German	Japanese	British
GB	AISI	DIN	JIS	BS
42CrMo	SAE4140	1.7225	SCM440	EN19

3. 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

4. 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

5. Stock Size

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

6. Product photo