Mechanical properties spec for AISI/SAE materials 2

[vwdevotee]

I feel like this is a rooky question, but what spec governs the mechanical properties of sae steels? I found J404 which covers the chemistry, but not mechanical properties.

 

[EdStainless]

AISI specs are just chemistry (as are UNS numbers).
You need a product spec (bar, plate, tube, etc) to find property requirements.
The product specs are also where you find references to testing and tolerances.

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P.E. Metallurgy, Plymouth Tube

 

[vwdevotee]

Those will all be in the ASTM specs then?

Thanks for clarifying.

 

[metengr]

Yes or other.

 

[EdStainless]

There are SAE (and SAE - AMS) as well as ASTM product specs. it all depends on the application.

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P.E. Metallurgy, Plymouth Tube

 

[mrfailure]

You need a good reference that cross-references the AISI-SAE with specifications associated with them. A good place to start is the UNS reference book, which is available from ASTM and SAE. This book is part of an effort to standardize alloy numbering and it contains the cross-references you need to standards such as ASTM and AMS.

 

[tbuelna]

The SAE is now official custodian of all AMS standards. As noted, the AISI-SAE alloy designation system only covered composition. The SAE AMS standards are far more extensive. They cover a metal's specific composition, form, quality, mechanical properties, etc.

The SAE does not have control over ASTM standards, but the SAE does reference ASTM documents in their own AMS standards.

 

[mrfailure]

The UNS book will tell you what applicable standards to look at as far as ASTM is concerned. Use the common name (e.g. Type 304) to look up the UNS# (S30400). The cross-reference in the back will then tell you the applicable ASTM standards (as well as AMS) that use that alloy.

I've mentioned before that a great reference to have is the ASM Worldwide Guide books (ferrous & nonferrous) because they give more detailed cross-references that include international standards and also mechanical properties, as well as explicitly stating the product form of the standards.

 

[WKTaylor]

vwdevotee

In-depth authoritative data You are looking for... RE conventional steels [CS/LAS]/SStl/aluminum/copper/etc alloy physical properties, mechanical allowables and general process data... are located in the CINDAS SAH.

CINDAS Structural Alloys Handbook (SAH)

https://cindasdata.com/products/sah

CINDAS also has authoritative data in the Aerospace and High Performance Alloys Database (AHAD).

https://cindasdata.com/products/ahad

NOTE. When the AHAD is combined with MMPDS, then this forms a rock-solid authoritative data combination for aerospace and Hi-performance [exotic] alloys... equal-to, or better-than, most company developed materials/processes handbooks.

Regards, Wil Taylor

o Trust - But Verify!
o We believe to be true what we prefer to be true.
o For those who believe, no proof is required; for those who cannot believe, no proof is possible.
o Unfortunately, in science what You 'believe' is irrelevant. ["Orion"]
o Learn the rules like a pro, so you can break them like an artist. [Picasso]

 

[vwdevotee]

Wow, everyone, thanks for all the great information!

 

[EdStainless]

You must be careful, CINDAS and MMPDS are sources for actual data, NOT specification.
They give you excellent data for real expected properties, especially at various temperatures and for properties that are not part of the specifications (such as fatigue).
You cannot design using actual, you must design off of minimums in specs.

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P.E. Metallurgy, Plymouth Tube