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17-4 PH Y/T ratio <0.7, low Yield for H1150
Hello I have a 17-4 PH forging which was heat treated to: Solution 1900°F for 4 hours 1st Precipitation hardening 1150°F for 4 hours 2nd Precipitation hardening 1150°F for 4 hours Sometimes the Y/T ratio is ok 0.85-0.9, but sometimes it is 0.6-0.7 which means that the Yield is very low for...- Diegol
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- Replies: 4
- Forum: Metal and Metallurgy engineering
