Alloy F53 (UNS S32750)
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Alloy F53 (UNS S32750) - Super Duplex Stainless Steel
Alloy F53, also known as UNS S32750, is a super duplex stainless steel with outstanding corrosion resistance and high mechanical strength. It is designed for use in highly aggressive environments, particularly those involving chlorides and other halides. The alloy offers a combination of excellent pitting and crevice corrosion resistance, superior stress corrosion cracking resistance, and exceptional strength.
Features of Alloy F53:
- Exceptional Corrosion Resistance: Ideal for harsh environments, including seawater, brackish water, and chemical processing.
- High Strength: Approximately twice the yield strength of 300-series stainless steels.
- Stress Corrosion Cracking Resistance: Performs excellently in chloride-rich and acidic environments.
- Good Weldability: Can be welded using standard techniques.
- Long-Lasting Durability: Retains properties in high-temperature and high-pressure environments.
Specifications:
Applicable Standards:
- ASTM A240, ASTM A182, ASTM A789, ASTM A790
Mechanical Properties:
Property | Value |
---|---|
Tensile Strength | ~800 MPa |
Yield Strength | ~550 MPa |
Elongation | ~15% |
Hardness (BHN) | ~310 |
Density | 7.8 g/cm³ |
Thermal Properties:
- Melting Range: 1350-1400°C
Chemical Composition:
Element | Percentage (%) |
---|---|
Chromium (Cr) | 24.0-26.0 |
Nickel (Ni) | 6.0-8.0 |
Molybdenum (Mo) | 3.0-4.0 |
Nitrogen (N) | 0.24-0.32 |
Carbon (C) | ≤0.03 |
Silicon (Si) | ≤1.0 |
Manganese (Mn) | ≤1.2 |