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17-7PH Cooling Rates
I sent samples to the lab to be tested last week, should get results early this week. We use vacuum furnace with argon cooling. The requirement states to use the Boeing spec and the spec says TH1050. The required strength states 180-200 KSI. I have thought about raising the temperature like you...- Bruce62
- Post #3
- Forum: Metal and Metallurgy engineering
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17-7PH Cooling Rates
I am having trouble getting to the TH1050 condition. I am following a Boeing spec and the end results call for 40<HRC<43. Austenizing at 1400F for 90 minutes and cooling at 15 psig, placing in water at 55F for 30 minutes, yields a HRC=~29. But when we go to ageing at 1050F for 90 minutes, we...- Bruce62
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- Replies: 5
- Forum: Metal and Metallurgy engineering
