Material Grade
Alloy 20
Alloy 20 is a austenitic nickel-iron-chromium alloy developed for maximum resistance against acid attack, specially sulfuric acid. It offers excellent resistance to pitting, crevice corrosion and general corrosion in chemicals containing chlorides and sulfuric, nitric , phosphoric and acids.For stabilization against sensitization and resultant intergranular corrosion Alloy 20 contains niobium .With relatively easy fabrication and elevated mechanical properties Alloy 20 also provides excellent corrosion resistance .
Specifications
| Standard | Alloy 20 |
| UNS | N08020 |
| Werkstoff Nr. | 2.4660 |
Mechanical & Physical Properties
| Density | 8.1 g/cm3 |
| Melting Point | 1443 °C (2430 °F) |
| Tensile Strength | Psi-80000 ,MPa-551 |
| Yield Strength (0.2%Offset) | Psi-35000 ,MPa-241 |
| Elongation | 30 % |
Chemical Composition
| Alloy 20 | |
| Ni | 32-38 |
| Fe | Bal |
| Cr | 19-21 |
| Cu | 3-4 |
| Mo | 2-3 |
| Nb | 0.1-0.3 |
| C | 0.02 max |
| Mn | 1-2 |
| P | 0.02 max |
| S | 0.005 max |
| Si | 0.7 max |
Application
Petrochemical Industry
Chemical Industry
Fabrication Industry
Food Industry
Heat Exchangers
