Alloy 20 Spring Manufacturer
Alloy 20 is one of the so-called "super" stainless steels that was designed for maximum resistance to acid attack. It's nickel, chromium, molybdenum and copper content contribute to its overall resistance to chloride-ion stress corrosion cracking and general pitting attack.
| Technical Specification | Alloy 20 |
|---|---|
| Nominal Composition |
Cr: 19.0 - 21 Ni: 32.0 - 38.0 Mo: 2.0 - 3.0 Cu: 3.0 - 4.0 |
| Density |
0.27 lb./in3 |
| Modulus of Elasticity (E) |
26 x 106 psi |
| Modulus of Rigidity (G) |
10675 ksi |
| Coefficient of Expansion |
8.16 µin/in.-°F (70°F) |
| Electrical Resistivity |
65 ohm -cir mil/ft. |
| Thermal Conductivity |
7.05 Btu/(hr/ft2/in/°F) |
| Min Size |
0.018 in (0.47 mm) |
| Max Temp |
537oC (1000oF) |
| Uses |
Superior resistance to stress corrosion cracking in boiling 20 – 40% sulphuric acid |
