Solution annealing of Inconel 625/UNS N06625/2.4856 Alloy/ASTM B443 is normally performed at 1093℃ and higher followed by being quenched in water or rapidly cooled by other means.
Annealing of N06625 is normally performed at 871℃ and higher followed by being quenched in water or rapidly cooled by other means.
Inconel 625/UNS N06625/2.4856 Alloy/ASTM B443 Material has three basic heat treatments:
(1)High Solution Anneal - 2000/2200 Degrees F (1093/1204 Degrees C), air quench or faster.
(2)Low Solution Anneal - 1700/1900 Degrees F (927/1038 Degrees C), air quench or faster.
(3)Stress Relieve - 1650 Degrees F (899 Degrees C), air quench.
The time at the above temperatures depends on volume and section thickness. Strip, for example, would require shorter times than large sections. Temperatures for treatments No. 1 and 2 are generally held for 1/2 to 1 hour, 1 to 4 hours for treatment No. 3.
Treatment No. 1 is not commonly used for applications below 1500 Degrees F (816 Degrees C). It is generally used above 1500 Degrees F and where resistance to creep is important. The high solution anneal is also used to develop the maximum softness for mild processing operations such as cold rolling or drawing.
Treatment No.2 is the used treatment and develops an optimum combination of tensile and ruptures properties from ambient temperatures to 1900 Degrees F (1038 Degrees C). Ductility and toughness at cryogenic temperatures are also very good.
Treatment No.3 is recommended for application below 1200 Degrees F (649 Degrees C) when maximum fatigue, hardness, tensile and yield strength properties are desired. Ductility and toughness at cryogenic temperatures are excellent. When a fine grain size is desired for fatigue, tensile and yield strengths up to 1500 Degrees F (816 Degrees C), treatment No. 3 is sometimes used.
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