SAE/AISI 1038 Carbon Steel (UNS G10380)
SAE/AISI 1038 steel has a relatively high carbon content compared to low-carbon steels, which imparts increased strength and hardness to the material. It falls within the medium-carbon range, making it suitable for applications where higher strength and wear resistance are required.
| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Iron | 98.59% | 99.09% |
| Carbon | 0.34% | 0.42% |
| Manganese | 0.60% | 0.90% |
| Phosphorous | 0.04% | |
| Sulfur | 0.05% | |
The following table provides a list of SAE/AISI 1038 properties in both SI and US customary/Imperial units.
Click on the icon to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Density | 7845 kg/m3 |
| Mechanical Properties | Metric |
| Tensile Strength (Ultimate) | 570 MPa |
| Tensile Strength (Yield) | 485 MPa |
| Young’s Modulus (E) | 190 - 210 GPa |
| Bulk Modulus (K) | 140 GPa |
| Shear Modulus (G) | 80 GPa |
| Elongation at Break | 12% |
| Poisson’s Ratio (ν) | 0.27 - 0.30 |
| Brinell Hardness | 163 |
| Thermal Properties | Metric |
| Thermal Conductivity | 52 W/m·K |
| Specific Heat Capacity (Cp) | 470 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 1.2×10-5 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 1038 Carbon Steel
| Advantages | Disadvantages |
|---|---|
| Good Strength | Limited Hardenability |
| Good Wear Resistance | Corrosion Susceptibility |
| Good Machinability | Lower Toughness |
| Cost-Effective |
Applications of 1038 Carbon Steel
AISI 1038 carbon steel is commonly used in various applications that require moderate strength, wear resistance, and machinability. Some typical applications of AISI 1038 carbon steel include:
- Shafts and Axles: AISI 1038 steel’s strength and wear resistance make it suitable for use in shafts and axles in machinery and automotive applications. It can withstand the torque and bending forces experienced in rotating components.
- Gears and Sprockets: The wear resistance of AISI 1038 makes it suitable for manufacturing gears and sprockets that experience moderate loads and sliding friction. It can maintain dimensional stability and withstand repeated use.
- Bolts, Nuts, and Fasteners: AISI 1038 carbon steel is used in the production of various fasteners due to its combination of strength and machinability. It can be easily threaded, allowing for secure connections in construction, machinery, and other industries.
- Construction Equipment Components: AISI 1038 can be found in components of construction equipment such as bulldozer blades, bucket teeth, and excavator pins. Its strength and wear resistance enable these components to endure demanding conditions.
- Agricultural Machinery Parts: Parts of agricultural machinery, such as plow blades, tiller tines, and harrow teeth, often use AISI 1038 carbon steel due to its strength and durability in the field.
- Industrial Machinery Components: AISI 1038 is utilized in various industrial machinery components like shafts, couplings, and brackets. Its machinability facilitates the manufacturing of intricate parts.
- General Engineering Components: AISI 1038 can be employed in a range of general engineering applications where moderate strength and wear resistance are required. This includes parts for pumps, valves, and mechanical assemblies.