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Model No.: ASME SA789 S31803 SMLS Tube
Standard: Astm
Whether Alloy: Non-Alloy
Tolerance: ±10%
Duplex Stainless Steel ASME SA789 S31803 SMLS Tube
ASTM A789 ASTM A790 S31803 Stainless Steel Tubing Composition %:
| C | Si | Mn | P | S | Cr | Mo | Ni | N | Cu |
| max. 0,03 | max. 1,00 | max. 2,00 | max. 0,030 | max. 0,020 | 21,00 – 23,00 | 2,5 – 3,5 | 4,50 – 6,50 | 0,08-0,20 | – |
S31803 vs S32205 Mechanical Properties
| Tensile Strength | Yield Strength | ||||||||
| Alloy | UNS | Spec. | MPa | ksi | MPa | ksi | Elongation in 2 in. (min.) % | Grain Size Req. | Max. Hardness |
| Duplex 2205 | S32205 | A789, A790 | 655 | 95 | 485 | 70 | 25 | — | 290HBW, 30* HRC |
| Duplex S31803 | S31803 | A789, A790 | 620 | 90 | 450 | 65 | 25 | — | 290HBW, 30* HRC |
S31803 vs S32205 Physical Properties
| Alloy | UNS | Spec. | Density kg/dm³ | (x106 psi) | Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) | Thermal Conductivity (BTU-in/ ft2-h-°F) |
| Duplex 2205 | S32205 | A789, A790 | 7.8 | 27.5 | 7.6 | 180 |
| Duplex S31803 | S31803 | A789, A790 | 7.8 | 27.5 | 7.6 | 180 |
S32205 vs S31803 Heat Treatment
| UNS Designation | Temperature | Quenching |
| S31803 | 1870-2010 °F [1020-1100°C] | Rapid cooling in air or water |
| S32205 | 1870-2010 °F [1020-1100°C] | Rapid cooling in air or water |
S32205 vs S31803 Corrosion Resistance
Both S32205 and S31803 have stress corrosion resistance properties in addition to high strength and excellent impact toughness. Provides pitting and crevice corrosion resistance superior to 316L or 317L austenitic stainless steel in almost all corrosive media. It also has high corrosion and erosion fatigue properties as well as lower thermal expansion and higher thermal conductivity than austenitic.
| Selling Units | : | Piece/Pieces |
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Payment Type: T/T,L/C
Incoterm: FOB,CFR,CIF,EXW
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