MIL-H-6875H HEAT TREATMENT OF STEEL

[kenvlach]

MIL-H-6875H HEAT TREATMENT OF STEEL was superseded 2 Feb 1999 by AMS-H-6875 Heat Treatment of Steel Raw Materials ($59 from SAE). However, it appears to me that SAE split out the heat treatments of 4 classes of finished steel parts into 4 more specs., e.g., AMS 2759/3 Heat Treatment Precipitation-Hardening Corrosion-Resistant and Maraging Steel Parts, each at $59 nonmember price, so it costs 5 x $59 to get the equivalent of MIL-H-6875H. Can someone confirm this?

 

[TVP]

Yes, that is correct. It would be nice to ask someone from the SAE committee why this was done...

 

[metrat]

You are correct in that the heat treatment of parts is now covered by numerous AMS slash sheets, based on mateiral type and or strength. AMS-Mil- H - 6875 exisitins but only for the heat treatment of raw materials.

I believe this was the result of the govenment transitioning to industry specs and trying to adopt specs. that were already in existance, such as AMS-2759 /1/2/3/4.... and others.