ASTM A447 / A447M
This specification covers iron-base, heat-resisting alloy castings of the 25 % chromium, 12 % nickel class, intended for structural elements, containers, and supports in electric furnaces, petroleum still tube supports, and for similar applications up to 2000°F [1095°C].
Chemical Properties
| Element | Composition, % |
|---|---|
| NickelA | 10.00 - 14.00 |
| Chromium | 23.00 - 28.00 |
| Carbon | 0.20 - 0.45 |
| Nitrogen | 0.20 |
| Manganese | 2.50 |
| Silicon | 1.75 |
| Phosphorus | 0.030 |
| Sulfur | 0.30 |
| Iron |
as may be agreed upon between the manufacturer and the purchaser |
