SAE 8620 Annealed Forged Alloy Steel Round Bar with Polished Surface for High Hardenability
Price:
US $850-1,350 / Ton
MOQ:
1 Ton
Delivery Time:
Negotiable
Product Description
SAE8620H Alloy Steel Round Bar
SAE 8620 is an alloy construction steel with excellent hardenability, good weldability, and superior machinability. This low carbon nickel chromium molybdenum alloy offers outstanding carburized properties, formability, and cold strain plasticity.
Key Features
- Excellent machinability performance
- Superior cold strain plasticity
- Good weldability characteristics
- High hardenability without fragility after tempering
International Standards
| Chinese | American | German | Japanese |
|---|---|---|---|
| GB 20CrNiMo | SAE 8620 | DIN 1.6523 | / |
Chemical Composition
| Element | Content (%) |
|---|---|
| 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
Heat Treatment:
Quenching Temperature: 850°C (oil cooled)
Tempering: 200°C (air cooled)
Quenching Temperature: 850°C (oil cooled)
Tempering: 200°C (air cooled)
| Property | Value |
|---|---|
| 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 |
Applications
Widely used in transmission systems, tractor motors, and small to medium automotive applications. Ideal 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 Sizes
Round Bar Diameter: 12-380mm
Available Forms: Round bars, flat bars, plates, and blocks
Conditions: Pre-hardened, hot rolled, annealed, quenched and tempered
Surface Finishes: Black, pre-machined, grinding, and polish
Available Forms: Round bars, flat bars, plates, and blocks
Conditions: Pre-hardened, hot rolled, annealed, quenched and tempered
Surface Finishes: Black, pre-machined, grinding, and polish
Quality Assurance
Government-Certified Steel Mills
We source materials exclusively from certified steel manufacturers to ensure consistent quality and reliability in all our steel products.
ISO 9001 Certified
Our integrated quality management system is continuously improved and regularly audited to meet international standards.
Reliable Delivery
We prioritize timely delivery for all orders, ensuring your materials arrive when you need them.
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
- Orders of any size or length accommodated
Product Gallery
Similar Products
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