4140 steel Charpy Impact at -50F
4140 steel Charpy Impact at -50F
(OP)
Does anybody has data, on Impact strength value of 4140 steel normalized measured at (- 50F).
thank you
Mark
thank you
Mark
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4140 steel Charpy Impact at -50F
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4140 steel Charpy Impact at -50F4140 steel Charpy Impact at -50F(OP)
Does anybody has data, on Impact strength value of 4140 steel normalized measured at (- 50F).
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RE: 4140 steel Charpy Impact at -50F
RE: 4140 steel Charpy Impact at -50F
RE: 4140 steel Charpy Impact at -50F
RE: 4140 steel Charpy Impact at -50F
rp
RE: 4140 steel Charpy Impact at -50F
Presently we cast some parts in 1045 Q&T. Min. customer requirements are TS 110ksi YS 90ksi impact strength 10 ftlbf at -50F. It varies from batch to batch, but we have no problem meeting the minimums, sometimes we get 18 ftlb. I was wandering if we can substitute 1045 to 4140 normalized, and avoid quenching just to simplify the process. Tensile and Yield should be no problem but 10ftlb impact at -50F might. I didn't find any info. in the technical literature on this particular detail. Well, next week we'll pour a sample mold and have it tested. Will let you know the results.
PS. I have another question regarding elongation problems. I'll post it a new thread.
Regerds,
Mark
RE: 4140 steel Charpy Impact at -50F
I am interested to know your result, please do report when finish.
I honestly don't see much benefit of the substitution if you are not going to do Q&T on 4140. In addition, required strength and toughness are pretty difficult for a normalized 4140 to meet. Not impossible, but will be marginable. You probably will end up with very strict process control and often time possibly scrape some instead of simplying things.
To me, you still have to do Q&T on 4130. The benefit will be more availabe supply and possiblly higher and more consistent Charpy data.
RE: 4140 steel Charpy Impact at -50F
http://www.encoremetals.com/productmanual.htm
RE: 4140 steel Charpy Impact at -50F