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4130
4130 Product Guide
Applications | Specifications | Mechanical and Chemical Data | Tolerances
Overview
Offers good strength, and weldability without compromising steel abrasion and impact resistance. Easy to machine and hot work as well as cold work in the annealed state, it becomes significantly more challenging once the steel is hardened. 4130 steel can also be easily welded. It is typically used in structural applications, including gears, fasteners, and some aircraft exterior.
Common Trade Names
UNS G41300, AISI 4130, C4130, Alloy Steel, Chrome-Moly, Chromoly
Other Resources
Weight Calculator | Mill Test Reports
Products
4130 Sheet/Plate | 4130 Hex Bar | 4130 Round Bar | 4130 Round Tube
Applications
- Structural Frames
- Gears
- Fasteners
Specifications
AMS | MIL |
|---|---|
| S6758 | T6736 |
| 6370 | |
| 6350 |
| Physical Properties 4130 | |||
| Annealed | Normalized | ||
|---|---|---|---|
| Density | 0.283 lb/in3 | 0.283 lb/in3 | |
| Ultimate Tensile Strength | 81.2 ksi | 97.2 ksi | |
| Yield Tensile Strength | 66.7 ksi | 63.1 ksi | |
| Shear Strength | 49 ksi | 62 ksi | |
| Hardness Rockwell | Brinell | B82 | 156 | B92 | 197 | |
| Elongation at Break Percentage | 28.2% | 25.5% | |
| Modulus of Elasticity | 29,700 ksi | 29,700 ksi psi | |
| Reduction of Area Percentage | 56% | 60% | |
| Melting Point | 2,590-2,660 °F | 2,590-2,660 °F | |
| Specific Heat | 1.14 x 10^-1 BTU/lb-°F | 1.14 x 10^-1 BTU/lb-°F | |
| Thermal Conductivity | 296 BTU-in/hr-ft^2-°F | 296 BTU-in/hr-ft^2-°F | |
|
Chemistry Information
|
|
Element |
Percentage |
| C | 0.28 - 0.33 |
| Cr | 0.8 - 1.1 |
| Fe | 97.3 - 98.22 |
| Mn | 0.4 - 0.6 |
| Mo | 0.15 - 0.25 |
| P | 0.035 max |
| Si | 0.15 - 0.35 |
| S | 0.04 max |
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