S31803 Pipe And Tube
- Grade:S31803, 1.4462, X2CrNiMoN22-5-3
- OD: 6mm-630mm, 1/4"-24"
- WT: 0.7mm-30mm, Sch 10S-Sch XXS
- Length: Fixed or random length as specified
- Specifications: ASTM A789, ASTM A790, EN10216-5
- Delivery Condition: Annealed and Pickled, Birght Annealed, Mechanical Polished, Electric Polished
- Mill Certificate: EN 10204 3.1, EN10204 3.2
- Marking: Continuosly stenciled as specified.
- Packing: In bundle or plywood cases with end caps
- Manufacturing: Seamless, Welded
Description:
S31803 is a nitrogen alloyed (≥ 0.08%) austenitic - ferritic stainless steel with improved structure stability and high general, localised and stress corrosion resistance. It is with 21% Cr and 2.5% Mo additions, performs much better than 316L grade in almost all corrosive media. The yield strength is about twice that of austenitic stainless steels. This allows the designer to save weight and makes the alloy more cost competitive compared to 316L grade. Typical operation temperatures are - 50°C/+280°C (- 58°F/+536°F). Lower temperatures could be considered, but require additional precautions, in particular for welded structures. S31803 is a multi - purpose material which can be used in various corrosive media
Chemical Composition:
| % | C | Mn | P | S | Si | Cr | Ni | Mo | Cu | N | Fe |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | - | - | - | - | - | 21 | 4.5 | 2.5 | - | 0.08 | balance |
| Max | 0.03 | 2 | 0.03 | 0.03 | 1 | 23 | 6.5 | 3.5 | - | 0.2 | balance |
Mechanical Property:
| 20°C | Tensile Strength | Yield Strength | Elongation % | Hardness | Density |
|---|---|---|---|---|---|
| Min | 620Mpa | 450Mpa | 25% | - | 7.85kg/dm3 |
| Max | - | - | - | 30HRC | 7.85kg/dm3 |
Applications:
| >Oil and Gas industry including sour gas applications | >Pulp and Paper industry |
| >Chemical industry | >Phosphoric acid plants |
| >Acetic acid distillation towers | >Sulphuric acid processes |
Range of Products:
| Plates / Sheets / Coil |
Heavy Plate Cold Rolled Sheet Hot Rolled Sheet Coil |
| Fittings |
Seamless LR Elbow / Welded LR Elbow Con Reducer / Ecc Reducer Con Tee / Ecc Tee / Cross Coupling / Cap |
| Flange |
Blind Plate Flanges Lap Joint Flanges Raised Face Blind Flanges Raised Face Slip On Flanges Raised Face Socket Weld Flanges Raised Face Threaded Flanges Raised Face Weld Neck Flanges Slip On Plate Flanges Blind Plate Flanges |
| Pipe / Tube |
Seamless Pipe Welded Pipe Seamless Tube Welded Tube Seamless U-Tube Welded U-Tube Square Tube Hollow Bar |
| Bar |
Round Bar Square Bar Flat Bar Angel Bar Hexagon Bar |
