SAE/AISI 1022 Carbon Steel (UNS G10220)
SAE/AISI 1022 carbon steel is a low-carbon alloy prized for its balance of machinability, weldability, and ductility. Commonly used in manufacturing, it is easily formed and processed, making it ideal for applications where moderate strength and cost efficiency are essential across a variety of industrial uses.
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| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Iron | 98.68% | 99.13% |
| Carbon | 0.17% | 0.23% |
| Manganese | 0.70% | 1.00% |
| Phosphorous | —— | 0.04% |
| Sulfur | —— | 0.05% |
The following table provides a list of SAE/AISI 1022 properties in both SI and US customary/Imperial units.
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| Physical Properties | Metric |
|---|---|
| Density | 7858 kg/m3 |
| Mechanical Properties | Metric |
| Tensile Strength (Ultimate) | 380 - 550 MPa |
| Tensile Strength (Yield) | 200 - 450 MPa |
| Young’s Modulus (E) | 190 - 210 GPa |
| Bulk Modulus (K) | 140 GPa |
| Shear Modulus (G) | 80 GPa |
| Elongation at Break | 20 - 35% |
| Poisson’s Ratio (ν) | 0.29 |
| Brinell Hardness | 110 - 160 |
| Thermal Properties | Metric |
| Thermal Conductivity | 50 W/m·K |
| Specific Heat Capacity (Cp) | 472 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 1022 Carbon Steel
| Advantages | Disadvantages |
|---|---|
| Cost-effective | Limited strength |
| Good machinability | Limited hardness |
| Good weldability | Corrosion susceptibility |
| Good ductility | Limited temperature resistance |
Applications of 1022 Carbon Steel
Thanks to its balanced mechanical properties and versatility, 1022 carbon steel is widely used across multiple industries, including:
- Fasteners: Used to manufacture bolts, screws, studs, and nuts due to its moderate strength, good machinability, and cost-effectiveness.
- General machinery and components: Utilized in the production of machine parts such as gears, shafts, couplings, and bushings.
- Automotive components: Found in camshafts, crankshafts, connecting rods, and engine components, where precise machining is essential.
- Construction and infrastructure: Used for anchor bolts, structural supports, and reinforcement bars in construction due to adequate strength.
- Agricultural equipment: Suitable for components like plows, harrows, and cultivators because of its machinability and durability.
- Hand tools: Employed in making tools such as wrenches, sockets, and screwdrivers, benefiting from its ease of machining and affordability.
- Shafts and axles: Used in the production of shafts and axles for various machinery and industrial equipment.