Thank you so much for your help, it is greatly appreciated. My technical background is quite shallow at the moment, as this is my 6th day on the job out of college so I greatly appreciate your time.
"What HT process are You using/following? What final HT Stress [strength] level?"
The HT process we use for 4340 is to heat to 1525 F followed by a quench in oil and then tempering at 392 F.
"Do machined parts undergo intermediate stress-relief operations? After HT/temper and final machining...
Hello, there has been an issue of quench cracking that has been quite prevalent in our 4340 steel and unfortunately we are unable to alter our quenchant formulation (currently using oil with additives). I was wondering if 8637 steel would be a good substitute to eliminate the quench cracking...
