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- From: rizzo@cbnewsf.cb.att.com (anthony.r.rizzo)
- Newsgroups: sci.engr
- Subject: Re: Question on Yield strength of aluminum
- Keywords: yield strength, aluminum
- Message-ID: <1992Sep14.143646.14661@cbfsb.cb.att.com>
- Date: 14 Sep 92 14:36:46 GMT
- References: <1992Sep12.094121@IASTATE.EDU>
- Sender: news@cbfsb.cb.att.com
- Distribution: na
- Organization: AT&T
- Lines: 25
-
- In article <1992Sep12.094121@IASTATE.EDU> ifan24@IASTATE.EDU (Ifan Alki) writes:
- >Hi everybody,
- >
- >I have a question about the yield strength of aluminum.
- >I have a stress-strain diagram of a tensile test.
- >The question is "How to determine the yield
- >strength of the alumium, based on that
- >diagram?"
- >For high strength steel we take .2% offset strain or .5% strain extension
- >under load.
- >Is this applicable to aluminum ?
- >Please also give me the sources about this matter.
- >
-
- Why would it NOT be applicable to aluminum? In any case,
- aluminum is a ductile metal, and the yield strength
- is a definition. If the 0.2% offset definition is not
- adequate for your particular application, and you have
- the LUXURY of testing samples from your lot of aluminum,
- then you can use the stress at any offset value that will
- suit your purpose. You could even use the elastic limit,
- or the proportional limit, if that's what you need and you
- can determine a value for it.
-
- Tony
-