Forgings, Fasteners, Boltings, Stud Bolts, Screws, Nuts
ASTM B637 UNS N09925 specification covers hot and cold-worked precipitation hardenable nickel alloy rod, bar, forgings, and forging stock for moderate or high temperature service. ASTM B637 includes some of the most popular trade names like inconel, waspaloy, nimonic and incoloy. We at Torqbolt are dedicated to provide Stud Bolts, Screws, Nuts, Washers & Bolting in accordance with ASTM B637.
| 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 N09925 | 0.03 max | 1.0 max | 0.5 max | 0.03 max | 0.03 max | 19.5-22.5 | ... | 2.5-3.5 | 0.5 max (Nb only) | 1.9-2.40 | 0.1-0.5 | ... | ... | 22.0 min | 1.5-3.0 | 42.0-46.0 | ... | ... | ... | ... |
| 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 |
|---|---|---|---|---|---|---|
| UNS N09925F | solution + precipitation harden | 140 000 (965) | 105 000 (724) | 18 | 25 | 346 max (38, Rc max) |
| UNS N09925G | solution + precipitation harden | 140 000 (965) | 110 000 (758) | 18 | 25 | 346 max (38, Rc max) |
| UNS | Heat Treatment | Test Temperature, °F (°C) |
Stress, psi (MPa)B | Minimum Hours | Elongation in 2 in. or 50 mm (or 4D), min, % |
|---|---|---|---|---|---|
| UNS N09925A | solution + precipitation harden | ... | ... | ... | ... |
| UNS | Recommended Annealing Treatment | Recommended Solution Treatment | Recommended Stabilizing Treatment | Precipitation Hardening Treatment |
|---|---|---|---|---|
| UNS N09925 | ... | 1825 to 1875°F (996 to 1024°C), hold 1⁄2 min, and 4 h max, cool at rate equivalent to air cool or faster | ... | 1365 ± 25°F (740 ± 14°C), hold at temperature for 6 to 9 hr, furnace cool to 1150 ± 25°F (621 ± 14°C), hold until total precipitation heat treatment time has reached 18 h, air cool or faster |