Ac1 temperature calculation
Ac1 temperature calculation
(OP)
Does anyone have an equation to calculate the Ac1/Ac3 temperature for steel from its chemistry? I am more interested in the Ac1. Any information you have would be helpful.
Thank you.
Thank you.
RE: Ac1 temperature calculation
regs,
vivek
RE: Ac1 temperature calculation
Ac3=910 - 203(C)^.5 - 15.2Ni + 44.7Si + 104V + 31.5Mo + 13.1W
Ac1=723 - 10.7Mn - 16.9Ni + 29.1Si + 16.9Cr + 290As + 6.38W
This gives you the temperature in deg C, when you enter in the weight percent of the element. I found that these equations work well for most alloys. When you get into large amounts of chromium (>> 1 wt%), they fail, giving an Ac3<Ac1.
Enjoy!