ASTM A513 Grade 8620
ASTM A513 Grade 8620 is a low-alloy, nickel-chromium-molybdenum steel known for its exceptional toughness, wear resistance, and case-hardening ability. Manufactured through ERW (Electric-Resistance Welding) or DOM (Drawn Over Mandrel), ASTM A513 8620 tubing delivers high strength, uniformity, and superior machinability.
It is widely used for components that need a hard, wear-resistant surface combined with a tough and ductile core—ideal for gears, shafts, bushings, mechanical parts, and automotive engineering applications.
Key Features
- Excellent Case-Hardening Capability for superior wear resistance
- High Strength and Tough Core Properties
- Good Machinability & Weldability
- Superior Fatigue Resistance for dynamic stress applications
- Uniform Structure & Strong Surface Hardness after carburizing
- High Dimensional Accuracy in DOM tubing
- Ideal for Precision Components requiring durability and toughness
Equivalent Grades
| Standard |
Grade |
| UNS |
G86200 |
| AISI |
8620 |
| SAE |
8620 |
| EN |
20NiCrMo2-2 |
| DIN |
1.6523 |
| JIS |
SNCM220 |
Available Sizes
- Outer Diameter (OD): 10 mm to 350 mm
- Wall Thickness: 1 mm to 25 mm
- Length: 3M, 6M & Custom Cut-to-Length
- Forms: Round, Square, Rectangular, Custom Profiles
ASTM A513 8620 Chemical Composition (%)
| Element |
Content (%) |
| Carbon (C) |
0.18 – 0.23 |
| Manganese (Mn) |
0.70 – 0.90 |
| Phosphorus (P) |
≤ 0.035 |
| Sulfur (S) |
≤ 0.040 |
| Silicon (Si) |
0.15 – 0.35 |
| Nickel (Ni) |
0.40 – 0.70 |
| Chromium (Cr) |
0.40 – 0.60 |
| Molybdenum (Mo) |
0.15 – 0.25 |
| Iron (Fe) |
Balance |
ASTM A513 8620 Mechanical Properties
| Property |
Value |
| Tensile Strength |
690 – 885 MPa |
| Yield Strength |
460 – 560 MPa |
| Elongation |
20% (min) |
| Hardness |
149 – 207 HB (Core Hardness) |
| Impact Strength |
High |
| Modulus of Elasticity |
205 GPa |
ASTM A513 8620 Physical Properties
| Property |
Value |
| Density |
7.85 g/cm³ |
| Melting Point |
1400–1500°C |
| Thermal Conductivity |
42 W/m·K |
| Electrical Resistivity |
0.65 µΩ·m |
| Poisson’s Ratio |
0.29 |
Types of ASTM A513 8620 Tubing
- ERW Mechanical Tubing
- DOM Tubing (Drawn Over Mandrel)
- Carburized / Case-Hardened Tubes
- Cold-Drawn Precision Tubes
- Round, Square & Rectangular Tubes
- Cut-to-Length & Machined Tubes
Applications
- Automotive transmission components
- Shafts, axles, gear blanks, and pinions
- Crankshafts & camshafts
- Bushings, couplings, and connecting rods
- Mechanical engineering components
- Oil & gas tool components
- Heavy machinery and industrial equipment
- Aerospace (non-critical parts)
Reviews
There are no reviews yet.