SAE/AISI 1215 Carbon Steel (UNS G12150)
SAE/AISI 1215 is a low-carbon, free-machining steel that is widely used in a variety of applications due to its excellent machinability, good strength, and wear resistance.
| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Iron | 98.42% | 98.95% |
| Carbon | 0.09% | |
| Manganese | 0.75% | 1.05% |
| Phosphorous | 0.04% | 0.09% |
| Sulfur | 0.26% | 0.35% |
The following table provides a list of SAE/AISI 1215 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 |
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 1215 Carbon Steel
| Advantages | Disadvantages |
|---|---|
| Excellent machinability | Lower strength compared to some other carbon steels |
| Improved chip formation during machining | Reduced ductility compared to some other carbon steels |
| Cost-effective for high-volume production | Reduced impact resistance compared to some other carbon steels |
| Good surface finish | Limited wear resistance compared to some other carbon steels |
Applications of 1215 Carbon Steel
AISI 1215 carbon steel finds application in various industries and is particularly suited for parts and components that require excellent machinability. Here are some common applications of 1215 carbon steel:
- Machined Components: Due to its exceptional machinability, 1215 carbon steel is widely used for producing machined components such as bushings, couplings, fittings, studs, bolts, nuts, and hydraulic fittings.
- Fasteners: 1215 carbon steel is often employed in the production of fasteners such as screws, studs, and bolts.
- Precision Shafts: The excellent machinability and good surface finish of 1215 carbon steel make it suitable for manufacturing precision shafts used in applications like motors, pumps, and machinery.
- Automotive Components: Certain automotive components benefit from the machinability and cost-effectiveness of 1215 carbon steel. Examples include bushings, fittings, spacers, and other small parts used in engines, transmissions, and braking systems.
- Electrical and Electronic Equipment: 1215 carbon steel can be found in electrical and electronic equipment, particularly in parts that require machining, such as connectors, terminals, and contacts.
- Hardware and Tooling: The machinability of 1215 carbon steel makes it useful in the production of hardware items, hand tools, and tooling components that require precise machining and dimensional accuracy.