Quenched and Tempered SAE8620 Alloy Steel Round Bar with High Hardenability and Good Weldability
Price:
US $850-1,250 / Ton
MOQ:
1 Ton
Delivery Time:
Negotiable
Product Description
SAE8620 / 20CrNiMoA Mechanical Alloy Steel Bar
High-quality surface quenched and tempered heat treated alloy steel bar with excellent mechanical properties and carburizing characteristics.
Product Overview
20CrNiMoA SAE8620H steel round rod is a hot rolled alloy bar specifically designed for chemical and mechanical applications. This low carbon nickel chromium molybdenum alloy offers superior carburized properties, excellent formability, and reliable weldability.
Key Features
- Excellent machinability performance
- Superior cold strain plasticity
- Reliable weldability characteristics
- High hardenability without post-tempering fragility
International Standards Comparison
| Chinese | American | German | Japanese |
|---|---|---|---|
| GB 20CrNiMo | SAE8620 | DIN 1.6523 | / |
Chemical Composition
| Element | Content Range (%) |
|---|---|
| Carbon (C) | 0.17-0.23 |
| Silicon (Si) | 0.17-0.37 |
| Manganese (Mn) | 0.6-0.95 |
| Phosphorus (P) | ≤0.035 |
| Sulfur (S) | ≤0.035 |
| Chromium (Cr) | 0.4-0.7 |
| Molybdenum (Mo) | 0.20-0.30 |
| Copper (Cu) | ≤0.30 |
Mechanical Properties
| Property | Value |
|---|---|
| Quenching Temperature | 850°C (oil cooled) |
| Tempering Temperature | 200°C (air cooled) |
| Tensile Strength (σb) | ≥980 MPa (100 kgf/mm²) |
| Yield Strength (σs) | ≥785 MPa (80 kgf/mm²) |
| Elongation (δ5) | ≥9% |
| Reduction of Area (ψ) | ≥40% |
| Impact Energy (Akv) | ≥47 J |
Typical Applications
Widely used in transmission systems, tractor motors, and small to medium automotive components. Serves as an alternative to 12CrNi3 for high-class carburization and cyanide carburizing parts including oil drilling equipment, mining claws, and cones. Commonly specified for carburized gears, pinions, shafts, bearings, piston rings, ring gears, and crankshafts.
Available Stock Sizes
Round bar diameters: 12-380mm
Material Forms & Conditions
Available in various forms including round bars, flat bars, plates, and blocks. Material conditions range from pre-hardened, hot rolled, annealed, quenched and tempered to surface finishes including black, pre-machined, grinding, and polished.
Quality & Service Advantages
Quality Assurance
Materials sourced exclusively from government-owned steel mills ensuring consistent quality and reliability. ISO 9001 certified quality management system with regular audits and recertification.
Delivery Performance
Speedy and timely delivery with priority treatment for all business transactions. Shortest possible lead times for both raw materials and finished products with machining or heat treatment.
Value-Added Services
- Metal cutting and sizing to specifications
- Precision machining (blanking, milling, grinding)
- Custom heat treatment services
- Sawing for small or large quantities
- Sawing-to-size capabilities
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
Location
No.283-1, Youyi Middle Road, Xishan District, Wuxi City, Jiangsu Province
Contact Person
Gao Ben