30CrMnSiA
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Description
Scope of supply of Aviation Group:
Round rods, steel plates, non-standard forgings, rings, seamless pipes, non-standard customization, welcome to inquire!
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
| alloy | % | Chromium Cr | Carbon C | Manganese Mn | Silicon Si | Phosphorus P | Sulfur S | Ni | copper with |
| 30CrMnSiA | Minimum value | 0.80 | 0.28 | 0.80 | 0.90 | – | – | – | – |
| Maximum value | 1.10 | 0.34 | 1.10 | 1.20 | 0.025 | 0.025 | 0.03 | 0.025 |
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.
