Nickel Alloy 20
Introduction
Nickel alloy 20 is a lowcarbon, niobiumstabilized 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.
Chemical Composition
Element | Content |
Iron | 35.0 |
Nickel | 32.0-38.0 |
Chromium | 19.0-21.0 |
Copper | 3.0-4.0 |
Manganese | <2.0 |
Molybdenum | 2.0 - 3.0 |
Niobium | <1.0 |
Silicon | |
Carbon | <0.07 |
Phosphorus | <0.045 |
Sulfur | <0.035 |
Physical Properties
Metric | Imperial | |
Density | 8.05 g/cm3 | 0.291Metric lb/in3 |
Mechanical Properties
Property | Metric | Imperial |
Tensile strength* | 620 MPa | 89900psi |
Yield Strength* | 300 MPa | 43500psi |
Elongation at break* | 41% | 41% |
*Annealed
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