Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
-
Heat Treating 17-4PH No Discoloration Allowed!
Metals Handbook, Volume 4, Ninth Edition pp 635-639. Note: Cleaning prior to Precipitation Hardening is very important. Oil and even fingerprints can cause discoloration. Note: We also passivate the material for some customers and this will remove light tinges of color. We do not do it here as...- heattreat
- Post #4
- Forum: Metal and Metallurgy engineering
-
Heat Treating 17-4PH No Discoloration Allowed!
This is a very difficult material to heat treat without discoloration. The temperatures are too low for reducing gases, such as hydrogen to react, and inert gases such as argon have enough residual oxygen, a couple ppm, to discolor the product over the four hour hold at temperature.We can heat...- heattreat
- Post #2
- Forum: Metal and Metallurgy engineering
