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Alloy 20 plate from thickness 8mm to 200mm
Product brief introduction
Alloy 20( UNS N08020) is a low-carbon, niobium-stabilized austenitic nickel/iron/chromium alloy with additions of molybdenum and copper. It exhibits exceptional corrosion resistance in chemical environments containing phosphoric acid, nitric acid, chlorides and sulfuric acid. It also has good mechanical properties at both ambient and elevated temperatures.
The following sections will discuss in detail about nickel alloy 20.
Normal composition%
| Element | Content (%) |
| Iron, Fe | 35 |
| Nickel, Ni | 32-38 |
| Chromium, Cr | 19-21 |
| Copper, Cu | 3-4 |
| Manganese, Mn | ≤2 |
| Molybdenum, Mo | 2-3 |
| Niobium, Nb | ≤1 |
| Silicon, Si | ≤1 |
| Carbon, C | ≤0.07 |
| Phosphorous, P | ≤0.045 |
| Sulfur, S | ≤0.035 |
Physical Properties
| Properties | Metric |
| Density | 8.05 g/cm3 |
Mechanical Properties
| Properties | Metric |
| Tensile strength (annealed) | 620 MPa |
| Yield strength (annealed) | 300 MPa |
| Elongation at break (annealed) | 41% |
Thermal Properties
| Properties | Metric |
| Thermal expansion co-efficient (@20-100°C/68-212°F) | 14.7 µm/m°C |
| Thermal conductivity | 12.3 W/mK |
Applications
The following are the list of applications of nickel 205 alloy:
· Production of plastics and synthetic fibers
· Chemical and petroleum processing equipment
· Mixing tanks
· Heat exchangers
· Process piping
Other Designations
Other designations that are equivalent to Alloy 20 include the following:
· ASME SB-462 - SB-464
· ASME SB-468
· ASTM B 462 - B 464
· ASTM B 468
· ASTM B 472 - B 474
· ASTM B 751
