SAE/AISI 1137 Carbon Steel (UNS G11370)
SAE/AISI 1137 carbon steel is a low-carbon, high-manganese alloy known for its excellent machinability. Commonly used in automotive, machinery, and equipment sectors, it offers cost-effectiveness and ease of processing, which enhances productivity in part fabrication and reduces production costs.
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| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Iron | 97.79% | 98.25% |
| Carbon | 0.32% | 0.39% |
| Manganese | 1.35% | 1.65% |
| Phosphorous | —— | 0.04% |
| Sulfur | 0.08 | 0.13% |
The following table provides a list of SAE/AISI 1137 properties in both SI and US customary/Imperial units.
Click on the button to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Density | 7700 - 8030 kg/m3 |
| Mechanical Properties | Metric |
| Tensile Strength (Ultimate) | 584 MPa |
| Tensile Strength (Yield) | 344 MPa |
| Young’s Modulus (E) | 190 - 210 GPa |
| Bulk Modulus (K) | 140 GPa |
| Shear Modulus (G) | 80 GPa |
| Elongation at Break | 15% |
| Reduction of Area | 25 - 40% |
| Poisson’s Ratio (ν) | 0.27 - 0.30 |
| Brinell Hardness | 174 |
| Thermal Properties | Metric |
| Thermal Conductivity | 52 W/m·K |
| Specific Heat Capacity (Cp) | 470 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 1.3×10-5 1/°C |
| Electrical Properties | Metric |
| Electrical Conductivity | 5.8×106 S/m |
| Electrical Resistivity | 1.7×10-7 Ω·m |
The values in this table are approximate and can vary depending on various factors such as the specific manufacturing process and heat treatment applied to the alloy.
Advantages & Disadvantages of 1137 Carbon Steel
| Advantages | Disadvantages |
|---|---|
| Excellent machinability | Lower strength |
| Good wear resistance | Limited hardenability |
| Cost-effective | Reduced ductility |
Applications of 1137 Carbon Steel
SAE/AISI 1137 carbon steel is versatile and well-suited for numerous industrial applications, including:
- Automotive Components: This steel is commonly used to produce parts like bushings, shafts, bolts, studs, nuts, and fittings, all requiring good machinability.
- Machinery and Equipment: It’s employed for manufacturing components such as gears, couplings, cams, spindles, fasteners, and fittings.
- Fasteners: Thanks to its machinability and cost-efficiency, it is frequently used to produce screws, bolts, and rivets.
- Tooling and Fixtures: It is suitable for tooling and fixture applications, including jigs, cutting tools, and drilling/milling components.