202 Duplex Stainless Steel Tube 18-610mm OD 6-50mm Wall for Power Station Pipelines and Fluid Transport
202 stainless steel pipe (national standard model 1Cr18Mn8Ni5N) offers exceptional high-temperature performance, maintaining stable characteristics up to 350°C with phase changes occurring only above 1000°C. This makes it ideal for demanding industrial applications requiring thermal stability.
Widely used in petrochemical processing with specifications including 304, 321, 316, 316L, 347, and 317L grades. Available in outer diameters from 18mm to 610mm and wall thicknesses from 6mm to 50mm. Primary applications include:
- Furnace pipes and heat exchanger systems
- Material conveyance pipelines
- Medium and low-pressure transmission lines
Superior corrosion resistance makes 202 stainless steel the preferred choice for water purification, storage, transportation, and seawater desalination systems. Annual industry demand reaches approximately 25,000 tons, with 304 and 316 stainless steels being the most commonly specified grades for water treatment applications.
| Element | C | Si | Mn | Cr | Ni | S | P |
|---|---|---|---|---|---|---|---|
| Content (%) | ≤0.15 | ≤1.0 | 7.5-10.0 | 17.00-19.00 | 4.00-6.00 | ≤0.03 | ≤0.06 |
| Density (g/cm³) | Elastic Modulus (GPa) | Thermal Expansion (10⁻⁶/°C) | Thermal Conductivity (W/m·K) | Electrical Resistivity (μΩ·in) |
|---|---|---|---|---|
| 7.93 | 203 | 17.5 | 16.3 | 22 |
| Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness |
|---|---|---|---|
| ≥520 | ≥275 | ≥40-50 | ≤207HB; ≤95HRB; ≤218HV |
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