SCM440 SAE4140 42CrMo EN19 1.7225 Special Alloy Structural Steel Round Bar

• Standard: DIN, JIS, AISI, GB
• 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
• Quality Assurance: 100% UT passed
• Delivery Time: 7days
• Condition: stock
• Delivery condition: hot rolled black surface
• Transport Package: Standard/Customized
• Specification: standard/customized
• Trademark: customized
• Origin: China
• HS Code: 7306900090
• Production Capacity: 1000t/Month

Product Description

SCM440 SAE4140 42CrMo EN19 1.7225 Special Alloy Structural 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. Applications

1. Suitable for manufacturing requirment a certain strength and toughness of large and medium-sized plastic mold, such as locomotive traction with the big gear, the supercharger drive gear, pressure vessle, rear axle, gear load connecting rod and a spring clip
2. Used to under 2000m deep well of oil drill pipe joint and the fishing tool
3. Used for bending machine mould  
4. 5. Applications

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