30CrMnSiA

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1. Introduction to 30CrMnSiA materials

      30CrMnSiA is medium carbon, with high strength and poor welding performance. After tempering, 30CrMnSiA has high strength and sufficient toughness, and has good hardenability. After conditioning, the material can be made of grinding wheel shaft, gear, and sprocket. 30CrMnSiA has good processing properties, small processing deformation, and good fatigue resistance. Used for shafts, piston accessories, etc. Used for various special wear-resistant parts and accessories of cars and aircraft.

2. Chemical composition of 30CrMnSiA

3. Mechanical properties of 30CrMnSiA

Tensile strength σb (MPa): ≥1080(110)

Yield strength σs (MPa): ≥835(85)

Elongation δ5 (%): ≥10

 30CrMnSiA alloy structure round steel

Section shrinkage ψ (%): ≥45

Impact power Akv (J): ≥39

Impact toughness value αkv (J/cm²): ≥49(5)

Hardness: ≤229HB

Sample size: The sample blank size is 25mm

Heat treatment specifications and metallographic structure:

Heat treatment specifications: quenching at 880℃, oil-cooled; tempering at 540℃, water-cooled and oil-cooled.

4. Application fields of 30CrMnSiA

      Shaft, piston spare parts, etc.

      Various special wear-resistant parts and accessories for cars and aircraft.