Alloy 20 is a nickel-chromium-molybdenum alloy developed for applications involving sulfuric acid. Its corrosion resistance also finds other uses in the chemical, food, pharmaceutical, power generation and plastics industries. Alloy 20 nickel tubing resists pitting and chloride ion corrosion and its copper content protects it from sulfuric acid.
Typical applications include tanks, piping, heat exchangers, pumps, valves.
| SKU | Description | Manufacture Method | OD | Wall | Specification |
|---|---|---|---|---|---|
| 46358 | SMLS ALLOY 20 B729 1/2 OD X .035 WA | SEAMLESS & DRAWN | 0.5000 | 0.0350 | ASTM B729 ASME SB729 |
Welded product |
Seamless product |
|
OD: .125" OD through 1" OD
|
OD: .375" through 1" OD
|
| Walls: .035" through .109" wall |
Walls: .035" through .065"
|
|
Specifications: ASTM B729, ASME SB729
|
Specifications: ASTM B468, ASME SB468 |
| Typical Chemical Composition % (max values, unless noted) | |||||||
|---|---|---|---|---|---|---|---|
| Nickel | 32.0-38.0 | ||||||
| Chromium | 19.0-21.0 | ||||||
| Iron | Remainder | ||||||
| Molybdenum | 2.0-3.0 | ||||||
| Sulfur | .035 max | ||||||
| Carbon | 0.07 max | ||||||
| Manganese | 2.0 max | ||||||
| Silicon | 1.00 max | ||||||
| Phosphorous | .045 max | ||||||
| Copper | 3.0-4.0 | ||||||
| Nb+Ta | 8 X C-1.0 | ||||||
| Typical Mechanical Properties | |||||
|---|---|---|---|---|---|
| Annealed | KSI | MPA | |||
| Yield Strength (0.2% offset) | 35 ksi | 241 | |||
| Tensile Strength | 80 ksi | 551 | |||
| Elongation % in 2" | 30.0 | ||||