SAE/AISI 1039 Carbon Steel (UNS G10390)
SAE/AISI 1039 steel offers a good balance of strength, toughness, and wear resistance. It is commonly used in applications where higher strength and hardness are required, such as gears, shafts, studs, bolts, and other components that undergo moderate stress.
| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Iron | 98.47% | 98.94% |
| Carbon | 0.36% | 0.44% |
| Manganese | 0.70% | 1.0% |
| Phosphorous | 0.04% | |
| Sulfur | 0.05% | |
The following table provides a list of SAE/AISI 1039 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) | 605 MPa |
| Tensile Strength (Yield) | 510 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 | 179 |
| Thermal Properties | Metric |
| Thermal Conductivity | 51 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 1039 Carbon Steel
| Advantages | Disadvantages |
|---|---|
| Good Strength | Limited Corrosion Resistance |
| Good Wear Resistance | Lower Toughness |
| Good Machinability | Limited Heat Resistance |
| Cost-Effective |
Applications of 1039 Carbon Steel
AISI 1039 carbon steel finds application in various industries and components that require medium to high strength, wear resistance, and good machinability. Some common applications of AISI 1039 carbon steel include:
- Shafts and axles: AISI 1039 steel’s combination of strength and wear resistance makes it suitable for use in shafts and axles that are subjected to heavy loads and wear.
- Gears and gear components: Gears require materials with good strength and wear resistance to withstand the forces and friction involved in transmitting power and motion.
- Fasteners: Carbon steels, including AISI 1039, are commonly used in the production of fasteners such as bolts, screws, and studs.
- Machine parts: Various machine parts, such as couplings, bushings, and spindles, can be made from AISI 1039 steel due to its strength and machinability.
- Automotive components: AISI 1039 steel may be used in the production of automotive components such as crankshafts, camshafts, and steering components.
- Agricultural equipment: Farming machinery and equipment, such as tillage tools, plowshares, and harrow teeth, often utilize AISI 1039 steel.
- Construction equipment: Certain construction equipment components, including pins, bushings, and couplings, can be manufactured from AISI 1039 steel.