Alloy 316L Stainless Steel (UNS S31603)
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Alloy 316L (ASTM A240/ ASTM A276/ ASTM A312)
Alloy 316L is a low-carbon version of the widely used 316 stainless steel. It is known for its excellent corrosion resistance, especially in chloride-rich environments such as seawater and chemicals. The lower carbon content reduces the risk of carbide precipitation during welding, making it ideal for welded applications where resistance to intergranular corrosion is essential.
Features of Alloy 316L:
- Superior Corrosion Resistance: Exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in chloride environments.
- Weldability: Low carbon content helps avoid carbide precipitation, improving weldability and reducing the risk of intergranular corrosion.
- High Strength: Retains good mechanical properties at elevated temperatures.
- Non-Magnetic: Non-magnetic in the annealed condition.
- Formability Excellent forming and shaping properties for a wide variety of applications.
Specifications:
Applicable Standards:
- ASTM A240, ASTM A276, ASTM A312, UNS S31603
Mechanical Properties:
| Property | Value |
|---|---|
| Tensile Strength | ~580 MPa |
| Yield Strength | ~240 MPa |
| Elongation | ~40% |
| Hardness (BHN) | ~200 |
| Density | 8.00 g/cm³ |
Thermal Properties:
- Melting Range: 1375-1400°C
Chemical Composition:
| Element | Percentage (%) |
|---|---|
| Chromium (Cr) | 16.0-18.0 |
| Nickel (Ni) | 10.0-14.0 |
| Molybdenum (Mo) | 2.0-3.0 |
| Manganese (Mn) | 2.0 |
| Silicon (Si) | ≤1.0 |
| Carbon (C) | ≤0.03 |
| Phosphorus (P) | ≤0.045 |
| Sulfur (S) | ≤0.030 |