Inconel 690 is a high-chromium, nickel-based alloy with excellent resistance to corrosion by a variety of aqueous media and high-temperature atmospheres. It also has high strength, good metallurgical stability and excellent processing characteristics.
Inconel 690 Chemical Composition| Alloy | % | C | Cr | Fe | Ti | Al | Nb+Ta | Cu | B | Mn | Si | S | P | Co | N | Zr | Ni |
| 690 | Min. | 0.015 | 27.0 | 7.0 | - | - | - | - | - | - | - | - | - | - | - | - | balance |
| Max. | 0.03 | 31.0 | 11.0 | 0.5 | 0.5 | 0.1 | 0.2 | 0.005 | 0.5 | 0.5 | 0.01 | 0.015 | 0.05 | 0.05 | 0.02 |
| Density | 8.19 g/cm³ |
| Melting point | 1343-1377 ℃ |
| Status |
Tensile strength (MPa) |
Yield strength (MPa) |
Elongation As % |
| Solution treatment | 372 | 738 | 44 |
| Bar/Rod | Wire | Strip/Coil | Sheet/Plate | Pipe/Tube | Forging |
| ASTM B / ASME SB 166,ASTM B 564 /ASME SB 564,ASME Code Case N-525,ISO 9723, MIL-DTL-24801 | ASTM B / ASME SB 166,ASTM B 564 /ASME SB 564,ASME Code Case N-525,ISO 9723, MIL-DTL-24801 | ASTM B / ASME SB 168 /906,ASME N-525, ISO 6208,MIL-DTL-24802 | ASTM B / ASME SB 168 /906,ASME N-525, ISO 6208,MIL-DTL-24802 | ASTM B / ASME SB 163,ASTM B 167 / ASME SB 829,ASTM B 829 /ASME SB 829,ASME Code Cases 2083, N-20, N-525,ISO 6207, MILDTL-24803 | ASTM B / ASME SB 166,ASTM B 564 /ASME SB 564,ASME Code Case N-525,ISO 9723, MIL-DTL-24801 |
Round bars/Flat bars/Hex bars, Size From 8.0mm-320mm, Used for bolts,fastners and other spare parts
Supply in welding wire and spring wire in coil form and cut length.
Widths up to 1500mm and lengths up to 6000mm,Thickness from 0.1mm to 100mm.
Forging Ring or gasket,size can be customized with bright surface and precision tolerance
Soft condition and hard condition with AB bright surface, width up to 1000mm
Standards size and customized dimension can be produced by us with small tolerance
1. Excellent resistance to many corrosive aqueous media and hightemperature atmospheres.
2.High strength. good metallurqical stability, and favorable fabrication characteristics
3.outstanding resistance to oxidizina chemicals and to high-temperature oxidizina gases
4 Good resistance to stresscorrosion cracking in chloride-containing environments as wel as to sodium hvdroxide solutions
The alloy's resistance to sulfur-containing gases makes it an attractive material for such applications as coal-gasification units, burners and ducts for processing sulfuric acid, furnaces for petrochemical processing, recuperators, incinerators, and glass vitrification equipment for radioactive waste disposal. In various types of high-temperature water, alloy 690 displays low corrosion rates and excellent resistance to stress-corrosion cracking. Thus. alloy 690 is widely used for steam generator tubes, baffles, tubesheets, and hardware in nuclear power generation.