420 vs 420F
420 vs 420F
(OP)
Besides the difference in chemistry and "somewhat reduced formability and corrosion resistance", are there any other reasons for concern with regard to 420F vs 420? I've got a part which has two hardness zones which is prone to failure. I know the free machining grades 303, 303Se, 347Se, etc are banned for flight applications according to MIL-HDBK-1587. Haven't been able to find much literature comparing 420 vs 420F. If there is any risk, especially considering the complex heat treatment of my part, I would rather have increased machining time. Any reason, 420F is better? I saw a vague reference to galling resistance being improved for 420F.
Comments??
Comments??





RE: 420 vs 420F
RE: 420 vs 420F
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P.E. Metallurgy, Plymouth Tube
RE: 420 vs 420F
RE: 420 vs 420F
RE: 420 vs 420F
http://cartech.ides.com/datasheet.aspx?E=70