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Participant

Join Date: Dec 2010
Posts: 3

About Permissible Subtitutes for USA Specification Materials

01/04/2011 1:54 AM

Dear Sir/ Madam, I am not an engineer, just an ordinary one, Please kindly inform me where can I get the Permissible Subsitutes for USA Specification Materials' File/data? Example, SS 420 J2 equivalent with 1.4021 or Grd. 1.4542 equivalent with AISI 630. Thank you very Much...

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Guru

Join Date: Jul 2006
Location: "Dancing over the abyss."
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#1

Re: About Permissible Subtitutes for USA Specification Materials

01/04/2011 10:38 PM

Must meet the designated specification in the purchase agreement documents is a requirement here. Milo

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Participant

Join Date: Dec 2010
Posts: 3
#2
In reply to #1

Re: About Permissible Subtitutes for USA Specification Materials

01/04/2011 10:59 PM

Dear Mr. Milo, you are saying that, the specification should be paid (using money) if I want to know about the equivalent of the code? Thank you very much for considering my request.

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Guru

Join Date: Jul 2006
Location: "Dancing over the abyss."
Posts: 4884
Good Answers: 243
#3
In reply to #2

Re: About Permissible Subtitutes for USA Specification Materials

01/05/2011 10:32 AM

Engineering and specifying materials is serious work.

Professional judgement is required in order to make determination of whether or not slight variances between different materials would make a difference in the intended form fit function, processing response, and suitability for end use.

The very first part of doing such a determination is having valid copies of the source documents, applicable standards, and cited references.

Failure to do this in this country could be considered basis for malfeasance/malpractice and subject one and one's company to severe liabilities in the event of a product failure.

It is fundamental requirement of materials engineering work to have copies of appropriate cited standards and specifications and assure compliance of materials to them.

Milo

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