Density: 8.0 g/cm³
Equivalent designations:
Alloy 31 ,DIN 1.4562, UNS N08031
Available products:
pipe,tube,bar,rod,wire,sheet,strip,bolt and nut,flange,pipe fittings
Alloy 31 is a nickel, chromium and molybdenum stainless steel with nitrogen and cupper additions. It combines moderate tensile strength and high ductility with excellent corrosion resistance in sulfuric acid, reducing and oxidizing media and has strong resistance to corrosion and erosion corrosion in phosphoric environment.
Typically alloy 20 has PREN of ≥ 48, which ensure that the resistance to pitting corrosion is high.
Chemical composition:
| Grado | Componente químico % | ||||||||||
| C | Si | Mn | S | P | Cr | Ni | Mo | Fe | Cu | N | |
| Alloy31 | Max 0.015 | Max 0.3 | Max 2.0 | Max 0.01 | Max 0.02 | 26.0-28.0 | 30.0-32.0 | 6.0-7.0 | Bal | 1.0-1.4 | 0.15-0.25 |
1. components for flue gas desulfurization (FGD) plants
2. plants for the production of phosphoric acid via the wet digestion process
3. pipes and heat exchangers for sulfuric acids contaminated with chlorides
4. pipes containing ocean water and brackish water, condensers and chillers
5. pickling plants for sulfuric acid as well as nitric-hydrofluoric acid
6. treatment of sulfuric acids from waste
7. evaporation and crystallization of salts
8. components for the cellulose and paper industry
9. digestion of ores, e.g. in HIPAL (high-pressure acid leach) plants for the digestion of laterite ores
10. mineral oil production and refineries
11. organic acids and ester synthesis
12. fine chemicals
13. strain-hardened transport and feed pipes as well as slicklines, wirelines and flowlines in the transport of oil and gas
Available products for Alloy 31:
Welded pipe/tube
Seamless pipe/tube
Pipe fittings
Flanges
Bar/Profiles
Sheet/ Plate/Coil/Strip
Wire/Wire rope
Forgings
Welding Rod
Fastener
Cargo packaging:
