Ductility of Investment cast 4140?
Ductility of Investment cast 4140?
(OP)
I have recently received some 4140 investment cast sample parts from our Chinese supplier, and although they looked good, failed in a very brittle manner. Investigation revealed that the parts we in fact not heat treated.
I am about to test them again after a proper quench and temper to achieve 35 HRc by a local quality heat treatment firm. What I am wondering though is given it is investment cast, how ductile or tough will it be compared to parts that have been machined or milled from bar or billet?
Ian.
I am about to test them again after a proper quench and temper to achieve 35 HRc by a local quality heat treatment firm. What I am wondering though is given it is investment cast, how ductile or tough will it be compared to parts that have been machined or milled from bar or billet?
Ian.
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RE: Ductility of Investment cast 4140?
RE: Ductility of Investment cast 4140?
This should be J14045 in ASTM A915 (I think).
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Plymouth Tube
RE: Ductility of Investment cast 4140?
Aaron Tanzer
www.lehightesting.com
RE: Ductility of Investment cast 4140?
Steel Castings, Carbon, and Alloy, with Tensile
Requirements, Chemical Requirements Similar to Standard
Wrought Grades
RE: Ductility of Investment cast 4140?
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.