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Hardness vs Strength Aluminum Alloys

Hardness vs Strength Aluminum Alloys

Hardness vs Strength Aluminum Alloys

(OP)
For Steels I am conversant with the correlation of HB, HRC, Vickers, etc -- vs -- UTS.

Where can I find a similar correlation for Aluminum?

I have Vol. 1 and 2 of 8th Ed Metals Hdbk, access at work to MIl-Hbk-5H, and on-line access to ASM Desk editions but so far have not found anything but have not made a thorough search.

ASTM?

Jesus is THE life,
Leonard

RE: Hardness vs Strength Aluminum Alloys

Metman;
I was thumbing thru ASM Metals Handbook, Desk Edition (2nd Edition) the other day looking for hardness conversions and thought I saw a hardness/strength table for aluminum alloys.

RE: Hardness vs Strength Aluminum Alloys

Page H99 from the October 2000 issue of Advanced Materials & Processes has a table of hardness data and a graph showing hardness vs. tensile strength for a variety of Al alloys.  The source is given as "Heat Treating of Aluminum Alloys" from ASM HANDBOOK Volume 4 Heat Treating, page 877 (1991 edition).

RE: Hardness vs Strength Aluminum Alloys

(OP)
Thanks for the speedy answers.  Not sure if I have that issue of AM&P.  Maybe it is available on-line with regular ASM  membership?  But first I will check Vol. 2 Heat Treating Cleaning and Finishing of 8th Ed. tomorrow at work and follow-up on the other leads as required.

Thanks again.

I am still interested to know if ASTM ties this down explicitly.  At this time I am only interested in wrought Aluminum products.

Jesus is THE life,
Leonard

RE: Hardness vs Strength Aluminum Alloys

All of the small ALCOA handbooks have tables of data that give Brinell Hardness vs most of the Mechanical Properties,
UTS, Yield, Elongation, Shear, Endurance Limit, and Modulus

RE: Hardness vs Strength Aluminum Alloys

As far as I know, ASTM does not and will not tie hardness to strength relationship in their standards for wrought products (Al-alloys).  My vendors always dispute this relationship (no consistancy across products/producers) and thus will only guarantee strength value.  Obviously, this can be frustrating to the end user since most of us don't feel like destroying a good part/material to verify strength.  We just want to (non-destructively) check hardness and get on with life.

RE: Hardness vs Strength Aluminum Alloys

The Aluminum Association gives hardnesses of alloys.  For sections about 1/4" thick or less, use a Webster Tester to measure hardness.  There are plenty of graphs to correlate hardness to tensile strength of aluminum alloys.

RE: Hardness vs Strength Aluminum Alloys

(OP)
Thanks to everyone.  I found what I was looking for in ASM Metals Reference Book Third Edition under mechanical parperties of Aluminum but Flesh stated what I feared.  Our Quality dep't would like to verify supplier material strength by hardness test which apparently is not a reliable method.  Too much scatter?

I worked for a local aircraft sheet metal parts manufacturer who routinely hardness tested a coupon taken from incoming material.  I plan to talk with their quality person to learn why their customers require these tests and what the tests are supposedly validating.

Jesus is THE life,
Leonard

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