Incoloy28 Material introduction
Incoloy28 alloy(UNS N08028/W.Nr.1.4563)It is a high nickel corrosion resistant alloy with high chromium and high molybdenum, copper and elements. It belongs to iron nickel ultra-low carbon austenitic alloy. Therefore, this alloy can be used not only as evaporator in the production process of phosphoric acid resistant to industrial phosphoric acid, but also as chemical equipment and components in the environment resistant to sulfuric acid, nitric acid+hydrochloric acid, nitric acid+hydrofluoric acid and other mixed acids. This alloy can also be used for oil and gas well casing in oil and gas development。
The alloy has excellent corrosion resistance in harsh corrosive medium of chemical industry; In wet process phosphoric acid, it has good overall corrosion resistance, in addition, it has excellent surface resistance to pitting, crevice corrosion, intergranular corrosion, stress corrosion, etc. In view of its excellent comprehensive properties, this alloy has been widely used in chemical processing, oil and gas field development and other industries in recent years。
Incoloy28 chemical composition
| Ni | Cr | Fe | Mo | P | S | Cu | Mn | Si | C |
minimum | 30.0 | 26.0 |
| 3.0 |
|
| 0.6 |
|
|
|
maximum | 34.0 | 28.0 | BAL | 4.0 | 0.03 | 0.03 | 1.4 | 2.5 | 1.0 | 0.03 |
Incoloy28 Physical and mechanical properties
density | melting point℃ |
8.0 | 1311-1366 |
Production method | σbMpa
| σ0.2Mpa
| δ5%
| %
| HRB
|
Bar+solution | 500 | 214 | 40 | --- | 80-90 |
Bar+cold working | 896 | 758 | 15 | --- | HRC33 |
Incoloy28 Executive standards
ASTMB668、ASTMB709、ASTMB829、ASMESB-668、ASMESB-709、ASMESB-829
