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Delivery status and heat treatment specification of 30CrMnSiA steel plate:
Delivery status of 30CrMnSiA steel plate: quenched + tempered; heat treatment specification of 30CrMnSiA steel plate: quenched at 880°C, oil-cooled, tempered at 540°C, water-cooled, oil-cooled.
Melting analysis of chemical composition of 30CrMnSiA steel plate:
| C | Si | Mn | P | S | Ni | Cr | Mo | Cu |
| 0.28-0.34 | 0.9-1.2 | 0.8-1.1 | ≤0.025 | ≤0.025 | ≤0.3 | 0.8-1.1 | ≤0.1 | ≤0.25 |
Mechanical properties of 30CrMnSiA steel plate:
| Delivery state | Mechanical properties | |
| Normalizing | Rm(MPa) | 550-800 |
| A(%) | ≥19 | |
| HBW | ≤229 | |
| Annealing | Rm(MPa) | 550-750 |
| A(%) | ≥19 | |
| HBW | ≤229 | |
| Normalizing, Annealing | Rm(MPa) | ≥1080 |
| A(%) | ≥10 | |
| Aku(J) | ≥39 | |
30CrMnSiA steel plate is a medium-carbon quenched and tempered steel, which has high strength and toughness after heat treatment. It is often used to manufacture special wear-resistant parts such as shafts, pistons, gears, and sprockets in automobiles and airplanes. 30CrMnSiA is pronounced as 30 chromium manganese silicon A, CrMnSi means the main chemical composition, and the A behind the 30CrMnSiA brand represents the national military standard product.
