Inconel 625 ASTM B564 Specification
This specification2 covers forgings of nickel alloy UNS N02200, Ni-Cu alloy UNS N04400, Ni-Cr-Fe alloys UNS N06600, UNS N06603, and UNS N06690, Ni-Cr-Mo-Nb alloy UNS N06625, Ni-Cr-Mo-Si alloy UNS N06219, low-carbon Ni-Mo-Cr alloys UNS N10276 and UNS N06022, Ni-CrMo-W alloy UNS N06110, low-carbon Ni-Cr-Mo-W alloy UNS N06686, Ni-Fe-Cr-Mo-Cu alloy UNS N08825, Fe-Ni-CrMo-N alloy UNS N08367, low-carbon Ni-Cr-Mo alloys UNS N06035, UNS N06058, and UNS N06059, low carbon Ni-CrMo-Cu alloy UNS N06200, Ni-Mo-Cr-Fe alloy UNS N10242, Ni-Mo alloys UNS N10665 and UNS N10675, low-carbon Ni-Fe-Cr-Mo-Cu alloy UNS N08031, Ni-Cr-W-Mo alloy UNS N06230, Ni-Cr-Co-Mo alloy UNS N06617, Ni-Co-Cr-Si alloy UNS N12160, Ni-Fe-Cr alloys, Ni-Mo alloy UNS N10629, Ni-Cr-Fe-Al alloy UNS N06025, Ni-Cr-Fe-Si alloy UNS N06045, Low-Carbon Ni-Mo-Cr-Ta alloy UNS N06210, NiMo-Cr-Fe alloy UNS N10624, and low-carbon Cr-Ni-Fe-N alloy UNS R20033*.
Inconel 625 Chemical Composition
| Composition, % | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Element | Nickel Chromium Molybdenum Columbium Alloy UNS N06625 |
||||||||
| Nickel | 58.0 minA | ||||||||
| Iron | 5.0 max | ||||||||
| Manganese | 0.5 max | ||||||||
| Carbon | 0.10 max | ||||||||
| Silicon | 0.5 max | ||||||||
| Sulfur, max | 0.015 | ||||||||
| Chromium | 20.0-23.0 | ||||||||
| Aluminum | 0.4 max | ||||||||
| Titanium | 0.4 max |
||||||||
| Columbium (Nb) + tantalum | 3.16-4.16 | ||||||||
| Molybdenum | 8.0–10.0 | ||||||||
| Phosphorus | 0.015 max | ||||||||
A. Element shall be determined arithmetically by difference.
Mechanical PropertiesA
| Material and Condition | Maximum Section Thickness, in. (mm) | Tensile Strength, min, ksi (MPa) | Yield Strength, 0.2 % Offset, min, ksi (MPa) | Elongation in 2 in. or 50 mm or 4D, min, % |
|---|---|---|---|---|
| Nickel-chromium-molybenumcolumbium alloy UNS N06625, annealed | Up to 4 (102), incl | 120 (827) | 60 (414) | 30 |
A. Forging quality is furnished to chemical requirements and surface inspection only.
B. Over 4 to 10-in. (102 to 254-mm) diameter for parts machined from forged bar.
C. Solution annealed at a minimum temperature of 2150°F (1177°C) followed by a water quench or rapidly
cooled by other means.