My PPF broke for the second time in 3 different spots again
06-23-05, 03:53 PM
#26
Rotary Enthusiast
Originally Posted by afterburn27
Well, I can't find the article I was talking about, but I still think that cryo treatment of a steel will increase the tensile strength. Cryo treatment definitely does increase hardness (especially in higher alloy steels) and you can generally translate increased hardness into increased tensile strength. In most steels there is a linear relationship between brinell hardness and tensile strength.
It improves wear by as much as 200%, but not by substantial hardness increase.
Link for 4140 cold rolled data showed 7-17% increase in tensile strength, no change in hardness. If it were my ppf, I would not cryo it. I'd check the eng and diff mounts, and consider upgrades to them.
06-23-05, 04:17 PM
#27
Originally Posted by KevinK2
http://et.nmsu.edu/~etti/winter99/ma...r/kollmer.html
It improves wear by as much as 200%, but not by substantial hardness increase.
Link for 4140 cold rolled data showed 7-17% increase in tensile strength, no change in hardness. If it were my ppf, I would not cryo it. I'd check the eng and diff mounts, and consider upgrades to them.
It improves wear by as much as 200%, but not by substantial hardness increase.
Link for 4140 cold rolled data showed 7-17% increase in tensile strength, no change in hardness. If it were my ppf, I would not cryo it. I'd check the eng and diff mounts, and consider upgrades to them.
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