Polished Surface SAE8620 Alloy Steel Round Bar with High Hardenability and Good Weldability for Mechanical Applications
Price:
US $720-1,350 / Ton
MOQ:
1 Ton
Delivery Time:
Negotiable
Product Description
SAE8620 Alloy Steel Round Bar
SAE8620H alloy steel round bar is a low carbon nickel chromium molybdenum alloy with excellent carburizing properties, formability, and weldability. This widely used carburizing alloy offers high strength case and core toughness, supported by chromium and molybdenum for superior surface hardness and wear resistance.
Key Features
- Excellent machinability performance
- Superior cold strain plasticity
- Good weldability characteristics
- High hardenability properties
International Standards Equivalents
| Brand Name | Ravne No. | Mat. No. | DIN | EN | AISI |
|---|---|---|---|---|---|
| 20NCD2 | 769 | 1.6523 | 21NiCrMo2 | 20NiCrMo2 | 8620 |
Chemical Composition (Weight %)
| C | Si | Mn | Cr | Mo | Ni | V | W | Others |
|---|---|---|---|---|---|---|---|---|
| 0.20 | max. 0.40 | 0.80 | 0.53 | 0.20 | 0.55 | - | - | - |
20NCD2 is a hardenable chromium, molybdenum, nickel low alloy steel designed for carburizing to develop case-hardened parts with excellent wear characteristics.
Physical Properties
Modulus of elasticity: 210 × 10³ N/mm²
Density: 7.86 g/cm³
Density: 7.86 g/cm³
Heat Treatment Specifications
| Treatment | Temperature | Cooling |
|---|---|---|
| Case hardening | 880-980°C | Oil (water), hot bath 160-250°C |
| Carburising | 880-980°C | Oil (water), hot bath 160-250°C |
| Direct hardening | 880-980°C | Oil, hot bath 160-250°C |
| Core refining | 860-900°C | Oil, hot bath 160-250°C |
| Core refining | 780-820°C | Oil, hot bath 160-250°C |
| Tempering | 150-200°C | Air |
Mechanical Properties
Quenching Temperature: 850°C (oil cooled)
Tempering: 200°C (air cooled)
Tensile strength: ≥980 MPa
Yield strength: ≥785 MPa
Elongation: ≥9%
Reduction of area: ≥40%
Impact energy: ≥47 J
Tempering: 200°C (air cooled)
Tensile strength: ≥980 MPa
Yield strength: ≥785 MPa
Elongation: ≥9%
Reduction of area: ≥40%
Impact energy: ≥47 J
Applications
Gears, shafts, bearings, piston rings, ring gears, crankshafts, and other applications requiring hard carburized case with tough core. Widely used in transmission systems, tractor motors, and automotive components.
Available Sizes
Round bar diameter: 12-380mm
Available in various conditions: pre-hardened, hot rolled, annealed, quenched and tempered
Available in various conditions: pre-hardened, hot rolled, annealed, quenched and tempered
Quality Assurance & Services
Quality Commitment
Materials sourced exclusively from certified steel manufacturers with ISO 9001 quality management system certification for consistent product quality.
Value-Added Services
- Metal cutting and sizing
- Machining (blanking, milling, grinding)
- Heat treatment services
- Sawing for small or large quantities
- Sawing-to-size capabilities
Delivery & Support
Speedy and timely delivery with excellent customer service. Orders of any size and length processed efficiently with competitive lead times.
Disclaimer: The information presented represents typical or average values and is not a guarantee of maximum or minimum values. Applications suggested are for illustration purposes only and are not intended as warranties of fitness for specific purposes.
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