SAE 8620 Alloy Steel Round Bar with High Hardenability, Good Weldability, and OD 6-630mm for Industrial Applications
Price:
US $750-1,150 / Ton
MOQ:
1 Ton
Delivery Time:
Negotiable
Product Description
Alloy AISI SAE 8620 Steel 1.6523 21NiCrMo2 Sncm220 Round Bar
SAE 8620H Alloy Round Bar is a low carbon nickel chromium molybdenum alloy steel with excellent carburized properties, formability, and weldability. This widely used carburizing alloy offers high strength case and core toughness due to its nickel content, while chromium and molybdenum provide superior surface hardness and wear resistance.
Key Features
Excellent machinability performance
Superior cold strain plasticity
Good weldability characteristics
High hardenability without fragility after tempering
International Standards Equivalents
| Chinese (GB) | American (AISI) | German (DIN) | Japanese (JIS) |
|---|---|---|---|
| 20CrNiMo | SAE 8620 | 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
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 |
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.
Carburized gears and pinions
Shafts and bearings
Piston rings and ring gears
Crankshafts and transmission components
Available Stock Sizes
Round Bar Diameter: 12-380mm
Material Conditions & Forms
Available in various forms including round bars, flat bars, plates, and blocks. Material conditions range from pre-hardened, hot rolled, annealed, to quenched and tempered. Surface conditions include black, pre-machined, grinding, and polished finishes.
Quality Assurance
We source materials exclusively from government-owned steel mills to ensure consistent quality and reliability. Our ISO 9001 certified quality management system undergoes regular audits and recertification to maintain the highest standards.
Our Services
Quality special steel for all industrial applications
Orders of any size and length with fast shipping
Unique inventory of specialty steel products
Value-added services: metal cutting, sizing, machining (blanking, milling, grinding), and heat treatment
Sawing services for small or large quantities
Excellent customer service and support
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