Tempering data for X22CrMoV12-1
Tempering data for X22CrMoV12-1
(OP)
Does anyone know where I can find tempering data on the above steel? In particular, I'm after some tables/equations which will let me determine the hardness after quenching and holding at various temperatures for various times.
Regards
Regards





RE: Tempering data for X22CrMoV12-1
http://www.bssa.org.uk/topics.php?article=165
RE: Tempering data for X22CrMoV12-1
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RE: Tempering data for X22CrMoV12-1
The Holloman-Jaffe equation outlines time/temperature equivalency for stress relief. Is there a similar equation for hardness/tensile strength?
RE: Tempering data for X22CrMoV12-1
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RE: Tempering data for X22CrMoV12-1
Yes, it is a similar equation to LMP and Hollomon-Jaffe (H-J). In checking one of my resources I have at home, the H-J equation does not really work for martensitic tempering data (martensitic stainless steels). If you are ambitious and looking for a rough approximation without specific data, there two data points regarding tempering - QT1 and QT2 from the references provided, you can use the Grange-Baughmann equation T(C+log t) x 10-3 where T is the absolute tempering temperature and time is in hours. Using the G-B equation, you solve for the G-B parameter1 and for G-B parameter 2 using the temperatures and tempering time (1 hour or other time as found in data) and a constant of 14.4. Keep in mind that this 12 Cr steel is probably one that exhibits secondary hardening upon tempering and this throws more uncertainty into this type of correlation (you have been warned).
You can plot hardness/TS as a function of the G-B parameter and draw a straight line between the two G-B points. Remember, this is only an approximation.
RE: Tempering data for X22CrMoV12-1
You can see this chart better by selecting and increasing the magnification.
RE: Tempering data for X22CrMoV12-1