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Description
Alloy 690 has outstanding resistance to oxidizing chemicals and to high-temperature oxidizing gases. And it has resistance to stress corrosion cracking in chloride-containing environments as well as to sodium hydroxide solutions. Alloy 690 is used for applications such as coal-gasification units, burners and ducts for processing sulfuric acid, furnaces for petrochemical processing, incinerators and so on.
Dimensional Data
Alloy 690 Specifications
| Grade | UNS | W.Nr |
| Inconel 690 | N06690 | 2.4642 |
Alloy 690 Standards
| Grade | % | Ni | Cr | Fe | C | Mn | Si | Cu | S |
| Inconel 690 | Min | 58 | 27 | 7 | 0.05 | / | / | / | / |
| Max | / | 31 | 11 | 0.5 | 0.5 | 0.5 | 0.015 |
Alloy 690 Chemical Conposition
| China | United States | Japan | Germany | United Kingdom | |
| GB | ASTM | UNS | JIS | DIN | BS |
| NS111 | Incoloy800 | N08800 | NCF800 | X10 NiCrAlTi32-20 | NA15 |
| NS112 | Incoloy800H | N08810 | _ | X10 NiCrAlTi32-20 | NA15 |
| NS142 | Incoloy825 | N08825 | NCF825 | NiCr21Mo | NA16 |
| NS143 | Carpenter20Cb3 | N08020 | _ | _ | _ |
| NS312 | Inconel600 | N06600 | NCF600 | NiCr15Fe | NA14 |
| NS313 | _ | _ | NCF601 | NiCr23Fe | _ |
| NS315 | Inconel690 | N06690 | _ | _ | _ |
| NS321 | Hastelloy B | N10001 | _ | _ | _ |
| NS322 | Hastelloy B-2 | N10665 | _ | NiMo28 | NA44 |
| NS333 | Hastelloy C-276 | N10276 | _ | NiMo16Cr15W | NA45 |
| NS334 | _ | _ | _ | NiMo16Cr15W | NA45 |
| NS335 | Hastelloy C-4 | N06455 | _ | NiMo16Cr16Ti | _ |
| NS336 | Inconel625 | N06625 | NCF625 | NiCr22Mo9Nb | NA21 |
| NA43 | |||||
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