SAE/AISI 1522 Carbon Steel (UNS G15220)
SAE/AISI 1522 is a low-carbon steel alloy known for its good machinability, weldability, and moderate strength. It is commonly used in structural and mechanical applications where cost-efficiency and reliability are key.
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| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Iron | 98.27% | 98.72% |
| Carbon | 0.18% | 0.24% |
| Manganese | 1.10% | 1.40% |
| Phosphorous | —— | 0.04% |
| Sulfur | —— | 0.05% |
The following table provides a list of SAE/AISI 1522 properties in both SI and US customary/Imperial units.
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| Physical Properties | Metric |
|---|---|
| Density | 7850 kg/m3 |
| Mechanical Properties | Metric |
| Young’s Modulus (E) | 190 - 210 GPa |
| Bulk Modulus (K) | 140 GPa |
| Shear Modulus (G) | 80 GPa |
| Elongation at Break | ≥ 20% |
| Reduction of Area | ≥ 42% |
| Poisson’s Ratio (ν) | 0.27 - 0.30 |
| Brinell Hardness | ≥ 149 |
| 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 |
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 1522 Carbon Steel
| Advantages | Disadvantages |
|---|---|
| Good strength and toughness | Limited corrosion resistance |
| Cost-effective | Relatively low hardenability |
| Good weldability and formability | Lower wear resistance compared to some alloys |
| Suitable for various fabrication processes | Moderate machinability depending on conditions |
Applications of 1522 Carbon Steel
AISI 1522 carbon steel finds applications in various industries and products where a combination of strength, toughness, and cost-effectiveness is required. Key applications include:
- Gears and Gear Shafts: Suitable for manufacturing gears and gear shafts due to good strength and toughness properties.
- Axles and Shafts: The combination of strength and toughness makes it suitable for axles and shafts used in automotive, construction, and machinery applications.
- Machinery Parts: Used in the fabrication of various machinery parts such as crankshafts, connecting rods, and camshafts.
- Bolts, Nuts, and Fasteners: Commonly used for manufacturing bolts, nuts, and fasteners due to good strength and formability.
- Structural Components: Utilized in structural components, such as beams, columns, and supports, where strength and cost-effectiveness are required for load-bearing.
- Agricultural Equipment: Farm machinery and equipment, such as plows, harrows, and tillers, often incorporate this steel due to its toughness and resistance to wear and impact.