INCOLOY 840
INCOLOY 840
List of Features
Incoloy 840
ATI 840™ alloy is a titanium-and aluminum-bearing austenitic stainless steel offering elevated-temperature scaling resistance superior to conventional chromium-nickel stainless steels, such as Type 304. The oxidation resistance of ATI 840 alloy compares favorably with higher alloyed grades up to 1900ºF (1038ºC), making it a good candidate alloy for use in sheathing forelectric heating elements, automotive emission control systems, and other applications where resistance to elevated temperature degradation is important.
%Chemical Composition
| Mn | P | C | Si | Cr | Ni | Ti | Al | Cu | Fe |
| (max) 1 | (max) 0.03 | (max) 0.08 | (max) 1 | 22 - 18 | 22 - 18 | (max) 0.6 | (max) 0.6 | (max) 0.75 | Balance |
Mechanical Properties
| Hardness (Rb) | % Elongation | Ultimate tensile strength (MPa) | Yield Strength (MPa) |
| 70 | 40 | 572 | 241 |
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