SAE/AISI 1044 Carbon Steel (UNS G10440)
SAE/AISI 1044 is a medium-carbon steel known for its versatile properties, including a strong balance of strength, toughness, and machinability. This steel can be heat-treated to meet specific mechanical and thermal requirements, making it suitable for a variety of industrial applications.
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| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Iron | 98.81% | 99.27% |
| Carbon | 0.43% | 0.50% |
| Manganese | 0.30% | 0.60% |
| Phosphorous | —— | 0.04% |
| Sulfur | —— | 0.05% |
The following table provides a list of SAE/AISI 1044 properties in both SI and US customary/Imperial units.
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| Physical Properties | Metric |
|---|---|
| Density | 7850 kg/m3 |
| Mechanical Properties | Metric |
| Tensile Strength (Ultimate) | 550 MPa |
| Tensile Strength (Yield) | 310 MPa |
| Young’s Modulus (E) | 205 GPa |
| Bulk Modulus (K) | 140 GPa |
| Shear Modulus (G) | 80 GPa |
| Elongation at Break | 16% |
| Poisson’s Ratio (ν) | 0.29 |
| Brinell Hardness | 163 |
| Thermal Properties | Metric |
| Thermal Conductivity | 50 W/m·K |
| Specific Heat Capacity (Cp) | 472 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 1044 Carbon Steel
| Advantages | Disadvantages |
|---|---|
| Good strength | Limited hardenability |
| Good wear resistance | Lower corrosion resistance |
| Good machinability | |
| Cost-effective |
Applications of 1044 Carbon Steel
SAE/AISI 1044 carbon steel is commonly used across industries for components requiring moderate strength and wear resistance. Key applications include:
- Shafts and Axles: Suitable for use in shafts and axles where moderate strength and wear resistance are required.
- Bolts and Fasteners: Used in the production of bolts, studs, and other fasteners due to its good strength and machinability.
- Gears and Sprockets: The moderate strength and toughness make it ideal for manufacturing gears and sprockets.
- Welded Structures: Often used in welded structures where moderate strength is sufficient.
- Machinery Parts: Employed in the production of machinery parts, including machine bases, cams, and crankshafts.