SAE/AISI 1137 Carbon Steel (UNS G11370)
SAE/AISI 1137 steel is often used in applications where excellent machinability is a primary requirement, such as in the production of parts for automotive, machinery, and equipment industries. Its ability to be easily machined allows for increased productivity and reduced production costs.
| 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 icon 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
AISI 1137 carbon steel, with its excellent machinability and cost-effectiveness, finds application in various industries. Here are some common applications of AISI 1137 carbon steel:
- Automotive Components: AISI 1137 steel is often used for manufacturing automotive parts that require good machinability, such as bushings, shafts, bolts, studs, nuts, and fittings.
- Machinery and Equipment: AISI 1137 steel is suitable for producing various machinery and equipment components, including gears, couplings, cams, spindles, fasteners, and fittings.
- Fasteners: Due to its good machinability and cost-effectiveness, AISI 1137 steel is commonly employed in the production of fasteners like screws, bolts, and rivets.
- Tooling and Fixtures: AISI 1137 carbon steel can be used to manufacture tooling and fixtures, such as jigs, fixtures, cutting tools, and drilling/milling components.
- General Purpose Components: AISI 1137 steel can be utilized for a wide range of general purpose components that require moderate strength and good machinability.