Quote:
Originally Posted by Weissach911
..............There are two ways to reduce the sensitvity of Preciptitation Hardened Stainless Steels to hydrogen embrittlement.
The first is to heat treat them to an over-aged condition which lightly reduces strength. but is beneficial.
The second is to add Niobium to the alloy composition....................
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During the development stages of the Supertec stud, the engineer considered hydrogen embrittlement a possible challenge and in response to his concern, he called out an aging process as part of the preparation for thread rolling. The studs are cut to length, ground twice (each end is different), aged, threaded, ground again (tips and body) and inspected.
Last year we considered cryogenics as a possible enhancement but after Cryo treating and laboratory testing we discerned no appreciable benefit.
The stud is in a constant state of evolution with this years development being a second stud with a length change for better fit in water cooled GT3 and we're currently testing a flanged, 12 point, titanium nut.