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S31803 Duplex Stainless Steel Seamless Pipe
S31803 is a duplex stainless steel with a two-phase microstructure consisting of austenite and ferrite phases. It features excellent corrosion resistance, pitting resistance, stress corrosion cracking resistance, high strength, and good weldability. It is widely used in harsh environments such as oil & gas, chemical, and marine applications.
ASTM: UNS S31803EN: 1.4462GB: 022Cr23Ni5Mo3N
MaterialASTM A790 / ASTM A213 / EN 10216-5
Thickness2-100 mm
WidthN/A (Pipe)
Length6000 mm / Custom
MOQ1 Ton
Lead Time7-15 days
PortShanghai / Tianjin
Response within 24 hours
In Stock — Ready to Ship
| Material Grade | ASTM A790 / ASTM A213 / EN 10216-5 | Standard | ASTM A790 / ASTM A213 / EN 10216-5 |
| Thickness Range | 2-100 mm | Width Range | N/A (Pipe) |
| Length Range | 6000 mm / Custom | MOQ | 1 Ton |
| Lead Time | 7-15 days | Port of Shipment | Shanghai / Tianjin |
| C | ≤0.03 | Si | ≤1.0 |
| Mn | ≤2.0 | P | ≤0.030 |
| S | ≤0.020 | Cr | 21.0-23.0 |
| Mo | 2.5-3.5 | Ni | 4.5-6.5 |
| N | 0.08-0.20 | Tensile Strength | ≥620 MPa |
| Yield Strength | ≥450 MPa | Elongation | ≥25% |
| Hardness (Brinell) | ≤290 HB |
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