SAE/AISI 1518 Carbon Steel (UNS G15180)
SAE/AISI 1518 is a low-carbon, high-strength carbon steel known for its good machinability, toughness, and moderate corrosion resistance. It is commonly used in structural, mechanical, and industrial components where strength and ease of fabrication are critical.
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| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Iron | 98.0% | 98.6% |
| Carbon | 0.15% | 0.21% |
| Manganese | 1.10% | 1.40% |
| Phosphorous | —— | 0.04% |
| Silicon | 0.15% | 0.30% |
| Sulfur | —— | 0.05% |
The following table provides a list of SAE/AISI 1518 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 |
| Poisson’s Ratio (ν) | 0.27 - 0.30 |
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 1518 Carbon Steel
| Advantages | Disadvantages |
|---|---|
| Inexpensive | Not as strong as some other grades of steel |
| Easy to weld | Not as resistant to wear as some other grades of steel |
| Good strength | Susceptible to corrosion |
| Good ductility | Can be brittle in certain temperatures or pressure levels |
| Widely available |
Applications of 1518 Carbon Steel
SAE/AISI 1518 carbon steel serves in demanding industrial and structural environments where strength, durability, and corrosion resistance are essential, including:
- Construction: Commonly used in the construction industry for a variety of applications, including beams, columns, and girders. It is also used in the manufacturing of prefabricated buildings.
- Machinery and equipment: Used in the manufacturing of a variety of machinery and equipment, including machine tools, hoists, and cranes. It is also used in the automotive and shipbuilding industries.
- Welding: A relatively easy steel to weld. Often used in applications where welding is required, such as in the construction industry and in the manufacturing of machinery and equipment.
- Corrosion resistance: Resistant to corrosion. Often used in applications where corrosion is a concern, such as in the construction industry and in the manufacturing of machinery and equipment.