Nimonic 80A Screws
2.4631, N07080
Nimonic 80a Screws are low creep superalloy fasteners manufactured from alloy containing more than 50% nickel , 20% chromium with addition of titanium and aluminium. Nimonic Alloy 80a Fasteners have an ability to withstand very high temperatures. TorqBolt is an eminent Nimonic 80a fastener supplier in India.
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Nimonic 80a Machine Screw Properties
Nimonic 80A Chemical Composition
| Composition Limits, % | Element | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UNS | C | Mn | Si | P | S | Cr | Co | Mo | Nb + Ta | Ti | Al | Zr | B | Fe | Cu | Ni | Ta | Nb | W | V |
| UNS N07080 (Formerly Grade 80A) | 0.10 max | 1.00 max | 1.00 max | ... | 0.015 max | 18.00-21.00 | ... | ... | ... | 1.80-2.70 | 0.50-1.80 | ... | ... | 3.00 max | ... | remainderB | ... | ... | ... | ... |
Nimonic 80A Mechanical Requirements
Tensile and Hardness Requirements
| UNS | Heat Treatment | Tensile Strength, min, psi (MPa) |
Yield Strength (0.2 % offset), min, psi (MPa) |
Elongation in 2 in. (50 mm) or 4D, min, % |
Reduction of Area, min, % |
Brinell or (Rockwell C) Hardness |
|---|---|---|---|---|---|---|
| ASTM B637 UNS N07080 | solution + stabilize + precipitation harden | 135 000 (930) | 90 000 (620) | 20 | ... | ... |
Stress Rupture Requirements
| UNS | Heat Treatment | Test Temperature, °F (°C) |
Stress, psi (MPa)B | Minimum Hours | Elongation in 2 in. or 50 mm (or 4D), min, % |
|---|---|---|---|---|---|
| ASTM B637 UNS N07080 | solution + stabilize + precipitation harden | 1400 760 | 47 000 (325) | 23 | 3.5 |