What is 35CrMo alloy steel material?

Standard: GB/T 3077

Description: 35CrMo alloy steel is a high-strength alloy structural steel with high static strength, impact toughness and high fatigue limit. 35CrMo alloy structural steel under the Chinese national standard GB/T 3077, 35CrMo steel is engineered for demanding environm...

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35CrMo alloy steel is a high-strength alloy structural steel with high static strength, impact toughness and high fatigue limit. 35CrMo alloy structural steel under the Chinese national standard GB/T 3077, 35CrMo steel is engineered for demanding environments where durability and toughness are paramount.

GB/T 35CrMo alloy steel is renowned for its superior strength, good hardenability, and excellent fatigue resistance. It is primarily used in the manufacturing of heavy-duty components that require high tensile strength and impact resistance. 35CrMo alloy steel common applications include crankshafts, connecting rods, gears, and high-pressure vessels, particularly in the automotive, energy, and machinery industries.

Conventional Dimensions:
Round bars: Diameter ranging from 10 mm to 300 mm.
Plates: Thickness from 10 mm to 200 mm, width up to 2500 mm.
Forgings: Custom sizes based on specific requirements, typically up to 500 mm in diameter.

Chemical Composition of 35CrMo Steel

The chemical composition of 35CrMo steel is carefully balanced to achieve optimal mechanical properties.

Element	C	Si	Mn	Cr	Mo	P	S
Content (%)	0.32-0.40	0.17-0.37	0.40-0.70	0.80-1.10	0.15-0.25	≤0.035	≤0.035

Mechanical Properties of 35CrMo Steel

The mechanical properties of 35CrMo steel make it suitable for high-stress applications.

Property	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Hardness (HB)
Value	≥985	≥835	≥12	≤229

Equivalent Steel Grades of 35CrMo alloy steel

35CrMo alloy steel has equivalent grades in international standards, ensuring compatibility in global markets.

Country/Standard	Equivalent Grade
USA (AISI/SAE)	4135, 4137
Germany (DIN)	34CrMo4
Japan (JIS)	SCM435

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