S32900 duplex stainless steel Coil has excellent corrosion resistance, high strength and processing performance, and is widely used in seawater corrosion equipment, chemical equipment and other fields.Its chemical composition, physical and mechanical properties are in line with international standards, and its processing and welding performance are excellent.
Chemical Composition
The chemical composition of S32900 is the basis of its performance. According to 2021, the main components of this material include:
· Carbon (C): ≤0.8%
· Silicon (Si): ≤1.00%
· Manganese (Mn): ≤1.50%
· Phosphorus (P): ≤0.035%
· Sulfur (S): ≤0.030%
· Chromium (Cr): 23.00% - 28.00%
· Nickel (Ni): 3.00% - 6.00%
· Molybdenum (Mo): 1.00% - 3.00%
Physical properties
The physical properties of S32900 are as follows20:
· Melting point: No specific value is provided
· Specific heat capacity: 0.46 kg/(kg·K) (0~100℃)
· Thermal conductivity: No specific value is provided
· Linear expansion coefficient: No specific value is provided
· Resistivity: No specific value provided
· Longitudinal elastic modulus: No specific value provided
· Density: No specific value provided
· Hardness: 227 HB after solution treatment, HRB 29
· Magnetism: None
Mechanical properties
The mechanical properties of S32900 are as follows:
· Tensile strength: ≥590 MPa20 or ≥620 MPa
· Yield strength: ≥390 MPa20 or ≥450 MPa
· Elongation: ≥18%20 or ≥25%
· Sectional shrinkage: ≥40%
Application areas
Due to its corrosion resistance and high strength, S32900 is widely used in:
· Seawater corrosion equipment
· Heat exchangers for industrial water cooling media
· Chemical, papermaking and food processing equipment
· Shipbuilding
· Oil and Gas Industry
Related Standards
S32900 complies with multiple international and regional standards, including:
· American ASTM standard: 329
· Japanese JIS standard: SUS329J1
· German DIN standard: 1.4460
· European EN standard: X3CrNiMoN27-5-3
· American UNS number: 329
Processing and welding
S32900 has good processing performance and can be processed by cutting, bending, stamping and other processing operations. In terms of welding, S32900 has excellent welding performance and the weld quality is stable and reliable.
Corrosion resistance
S32900 has good corrosion resistance in oxidizing media, especially in chloride environments, showing excellent corrosion resistance.
Heat treatment
S32900 can optimize its performance through solution treatment. The usual heat treatment heating temperature is 950~1100°C, followed by rapid cooling.
