ASTM A182 F53 (UNS S32750) Super Duplex Stainless Steel Weld Neck Raised Face (WNRF) flanges deliver exceptional strength and chloride corrosion resistance. Ideal for offshore, chemical processing, and sour gas pipelines operating at temperatures from -60°C to 300°C. Manufactured under ISO 9001:2015 quality system.
Element | Min | Max | Typical Value |
---|---|---|---|
Chromium (Cr) | 24.0% | 26.0% | 25.2% |
Nickel (Ni) | 6.0% | 8.0% | 7.0% |
Molybdenum (Mo) | 3.0% | 4.0% | 3.8% |
Nitrogen (N) | 0.24% | 0.32% | 0.28% |
Manganese (Mn) | - | 1.2% | 0.5% |
PREN① | ≥40 | 42 |
Property | Value | Test Standard |
---|---|---|
Tensile Strength | ≥ 795 MPa (115 ksi) | ASTM A370 |
Yield Strength (0.2% Offset) | ≥ 550 MPa (80 ksi) | ASTM A370 |
Elongation (% in 50mm) | ≥ 15% | ASTM A370 |
Hardness (Brinell) | ≤ 290 HBW | ASTM E10 |
Charpy V-Notch Impact | ≥ 100 J @ -46°C | ASTM A370 |
Feature | Competitive Edge |
---|---|
Corrosion Resistance | Resists pitting/crevice corrosion in seawater (Cl- > 20,000 ppm) |
Stress Corrosion Cracking (SCC) Resistance | Exceeds NACE MR0175/ISO 15156 requirements for H2S environments |
High Strength | 2x yield strength vs. 316L stainless steel, enabling thinner/lightweight designs |
Weldability | Low carbon content (0.03% max) prevents sensitization during welding |
Dimensional Precision | CNC-machined sealing faces (Ra ≤ 3.2 μm) ensure leak-free ASME B16.5 RF |
Oil & Gas:
Chemical Processing:
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