Chemical Composition of 35CrMo Steel, Mechanical Properties, Equivalent

35CrMo steel

35CrMo steel is a Chinese alloy steel for engineering purposes, it has high durability and creep resistance at high temperatures, and the impact resistance at low temperatures is good. The working temperature is up to 500°C, the low temperature can be -100°C, and it has high static strength and high fatigue resistance, good hardenability, no tendency to overheat, small quenching deformation and moderate machinability. However, this material presents a first type of brittleness due to tempering and the weldability is not good. It needs to be preheated to 150-400°C before welding, and heat treatment is necessary after welding to eliminate stress. Generally used after quenching and tempering treatment.

35CrMo Alloy Steel Applications

35CrMo alloy steel can be used to manufacture important parts in various machines that withstand impact, bending and high loads, such as rolling gears, crankshafts, connecting rods, fasteners, automotive engine spindles, axles, engine transmission parts, large shafts of engines, bolts for boilers with operating temperatures below 400°C, nuts below 510°C, high pressure seamless thick wall conduits for chemical machines (450-500°C, non-corrosive media).

data sheet

Chemical Composition of 35CrMo Steel

Mechanical Properties of 35CrMo Alloy Steel

• Yield strength: ≥ 835 MPa
• Tensile strength: ≥ 980 MPa
• Elongation: ≥12%
• Area reduction rate: ≥45%
• Impact absorption energy: ≥ 63 J
• Brinell hardness: ≤ 229 (steel rod annealed or quenched at high temperature)
• Sample size: 25mm

Heat Treatment Specification

• First quenching heating temperature: 850 °C (coolant – oil)
• Quenching heating temperature: 600 °C (coolant – water, oil)

Equivalent

35CrMo equivalent to US ASTM, European Germany DIN EN, British BS EN, France NF EN, Japanese JIS and ISO standard.