SAE 8620 Alloy Steel Round Bar 10-350mm Hot Rolled with 980MPa Tensile Strength for Industrial Applications
SAE 8620 is a low carbon nickel chromium molybdenum alloy steel with excellent carburizing properties, formability, and weldability. This hot rolled steel round bar offers diameters ranging from 10mm to 350mm, making it suitable for various industrial applications requiring high strength case and core toughness.
- High hardenability without fragility after tempering
- Excellent machinability performance
- Superior cold strain plasticity
- Good weldability with conventional methods
- Cost-effective carburizing alloy with wide availability
| Element | Content |
|---|---|
| Carbon (C) | 0.17-0.23% |
| Silicon (Si) | 0.17-0.37% |
| Manganese (Mn) | 0.60-0.95% |
| Chromium (Cr) | 0.40-0.70% |
| Molybdenum (Mo) | 0.20-0.30% |
| Nickel (Ni) | 0.55% |
| Phosphorus (P) | ≤0.035% |
| Sulfur (S) | ≤0.035% |
| Property | Value |
|---|---|
| Tensile Strength | ≥980 MPa |
| Yield Strength | ≥785 MPa |
| Elongation | ≥9% |
| Reduction of Area | ≥40% |
| Impact Energy (Akv) | ≥47 J |
| Modulus of Elasticity | 210 GPa |
| Density | 7.86 g/cm³ |
| Standard | Designation |
|---|---|
| DIN | 1.6523 |
| EN | 20NiCrMo2 |
| AISI | 8620 |
| UNS | G86200 |
| Chinese Standard | 20CrNiMo |
Recommended heat treatment processes include case hardening at 880-980°C with oil cooling, carburizing at 880-980°C, and tempering at 150-200°C with air cooling. Soft annealing at 650-700°C produces maximum Brinell hardness of 212.
SAE 8620 alloy steel round bars are widely used in transmission systems, gears, shafts, bearings, piston rings, crankshafts, and various components requiring hard carburized cases with tough cores. Applications span aerospace, agriculture, construction, automotive, and heavy machinery industries.
We supply SAE 8620 alloy steel in round bars with diameters from 10mm to 350mm, available in hot rolled, annealed, quenched and tempered conditions.
Our materials are sourced from certified steel mills with ISO 9001 quality management. We offer value-added services including metal cutting, sizing, machining (blanking, milling, grinding), and heat treatment with fast delivery and competitive pricing.
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