SAE/AISI 1213 Carbon Steel (UNS G12130)
SAE/AISI 1213 is a low carbon steel commonly used in various components and parts that require good machinability, such as bolts, nuts, studs, screws, and similar fasteners.
| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Iron | 98.42% | 98.99% |
| Carbon | 0.13% | |
| Manganese | 0.70% | 1.0% |
| Phosphorous | 0.07% | 0.12% |
| Sulfur | 0.24% | 0.33% |
The following table provides a list of SAE/AISI 1213 properties in both SI and US customary/Imperial units.
Click on the icon to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Density | 7870 kg/m3 |
| Mechanical Properties | Metric |
| Tensile Strength (Ultimate) | 540 MPa |
| Tensile Strength (Yield) | 415 MPa |
| Young’s Modulus (E) | 190 - 210 GPa |
| Bulk Modulus (K) | 140 GPa |
| Shear Modulus (G) | 80 GPa |
| Elongation at Break | 10% |
| Reduction of Area | 35% |
| Poisson’s Ratio (ν) | 0.27 - 0.30 |
| Brinell Hardness | 167 |
| Thermal Properties | Metric |
| Thermal Conductivity | 52 W/m·K |
| Specific Heat Capacity (Cp) | 470 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 1.15×10-5 1/°C |
| Electrical Properties | Metric |
| Electrical Conductivity | 4.1×106 S/m |
| Electrical Resistivity | 2.4×10-7 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 1213 Carbon Steel
| Advantages | Disadvantages |
|---|---|
| Excellent machinability | Relatively low strength compared to other carbon steels |
| Smooth finishes and reduced tool wear | Limited use in applications requiring high mechanical properties |
| Lead-free composition (environmentally friendly) | Lower hardness compared to some other carbon steels |
| Cost-effective and widely available | Not suitable for applications requiring high wear resistance |
| Good for producing complex and intricate parts | Limited heat treatability |
Applications of 1213 Carbon Steel
AISI 1213 carbon steel, known for its excellent machinability, is commonly used in various applications where ease of machining is a primary consideration. Here are some typical applications of 1213 carbon steel:
- Fasteners: 1213 steel is often utilized for manufacturing bolts, screws, studs, nuts, and other fasteners. Its superior machinability allows for efficient production of these components.
- Fittings and Connectors: Due to its ease of machining, 1213 carbon steel is suitable for producing fittings and connectors used in plumbing, hydraulic systems, and other applications requiring secure connections.
- Bushings and Bearings: 1213 steel’s machinability makes it a viable option for producing bushings and bearings used in machinery, automotive components, and other rotating or sliding applications.
- Small Turned Parts: It is commonly employed for manufacturing small turned parts such as pins, shafts, spindles, and similar precision components that require smooth finishes and dimensional accuracy.
- Electrical and Electronic Components: 1213 carbon steel can be used in the production of electrical connectors, terminals, and similar components due to its ease of machining and cost-effectiveness.
- Automotive Components: Some automotive parts, especially those that do not require high strength or wear resistance, can be made from 1213 carbon steel. Examples include small brackets, supports, and non-critical engine components.
- General Machinery Parts: Various machinery parts that demand good machinability, such as gears, cams, levers, and small structural components, can be manufactured using 1213 carbon steel.