AISI 2507 Super Duplex Stainless Steel for customer

Mar 23, 2026

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UNS S30908 Stainless Steel – High-Chromium Heat-Resistant Utility Alloy304L Stainless Steel Sheet for Chemical Tank Linings304L Stainless Steel Pipe for Chemical Fluid Transportation

🧪 Chemical Composition

Element Composition (%)
Carbon (C) ≤ 0.030
Manganese (Mn) ≤ 1.20
Silicon (Si) ≤ 0.80
Phosphorus (P) ≤ 0.035
Sulfur (S) ≤ 0.020
Chromium (Cr) 24.0 - 26.0
Nickel (Ni) 6.0 - 8.0
Molybdenum (Mo) 3.0 - 5.0
Nitrogen (N) 0.24 - 0.32
Copper (Cu) ≤ 0.50
Tungsten (W) ≤ 0.50
Iron (Fe) Balance

⚙️ Mechanical Properties

Property Value
Tensile Strength (Rm) ≥ 800 MPa
0.2% Proof Strength (Rp0.2) ≥ 550 MPa
Elongation (A5) ≥ 15%
Hardness (HRC) ≤ 32
Impact Energy (KV) at 20°C ≥ 60 J
Impact Energy (KV) at -40°C ≥ 40 J
Fatigue Limit (10^7 cycles) 350 MPa
Young's Modulus 200 GPa
Shear Modulus 80 GPa
Poisson's Ratio 0.27

🔬 Physical Properties

Property Value
Density 7.80 g/cm³
Melting Point 1350-1400°C
Thermal Conductivity at 20°C 14 W/m·K
Thermal Conductivity at 100°C 16 W/m·K
Thermal Expansion (20-100°C) 13.0×10-6/K
Thermal Expansion (20-300°C) 13.5×10-6/K
Specific Heat Capacity 480 J/kg·K
Electrical Resistivity at 20°C 0.85 µΩ·m
Magnetic Permeability 1.02 µr
Curie Temperature Non-magnetic

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