35CrMnSiA alloy steel use, properties and characteristics

35CrMnSiA alloy steel is used to manufacture heavy-duty, high-strength, high-toughness parts and high-strength components. Such as: aircraft landing gear, high-pressure blower blades, etc.. 35CrMnSiA steel can partially replace the corresponding chromium-nickel-molybdenum steel in the manufacture of lower section parts.

Chemical composition of 35CrMnSiA alloy steel:
Carbon 0.32-0.39
Silicon 1.10-1.40
Manganese 0.80-1.10
Copper≤0.025
Sulfur ≤0.025
Phosphorus≤0.025
Chromium 1.10-1.40
Nickel≤0.030

Mechanical properties of 35CrMnSiA alloy steel:
Tensile strength σb(MPa): ≥1620
35CrMnSiA alloy steel yield strength σs(MPa): ≥1275
35CrMnSiA alloy steel elongation δ5(%): ≥9
The reduction of area ψ(%): ≥40
Impact energy Akv(J): ≥31
Impact toughness value αkv(J/cm2): ≥39
Hardness: ≤240HB
35CrMnSiA alloy steel sample size: sample blank size is 18mm

Characteristics of 35CrMnSiA alloy steel:
Low alloy, high strength, good comprehensive mechanical properties after heat treatment, good hardenability, weldability and processing formability, but poor corrosion resistance and oxidation, the use temperature is generally lower than 200℃.