British Alloy L40 from 1940s 2

[brin]

Does anyone have a link to old (1940s) British alloy design information? I'm looking for L40 alloy specifically. I believe it crosses up to British Standard L168 (similar to 2014-T6), but would like to get the original mechanical properties if possible.

thanks

 

[WKTaylor]

Brin...

Per ASM Hdbk Metalic Materials Specification Handbook 4th ed, [BS] L40 is obsolete: replaced by L65.

There was an Eng-Tips thread on BS L65, 7 Mar 08, thus:

http://www.eng-tips.com/viewthread.cfm?qid=211600

Per IHS Standards Expert BS L65 Bars and Extruded Sections of Aluminium-Copper-Magnesium-Silicon-Manganese Alloy is withdrawn, and is superseded by BS L168 Specification for
Bars and extruded sections of aluminium — copper — magnesium — silicon — manganese alloy — (Solution treated and artificially aged) (Not exceeding 200 mm diameter or minor sectional dimension) (Cu 4.4, Mg 0.5, Si 0.7, Mn 0.8)

The British alloy designation system always hurts my brain... especially when US cross-over/equivalents are necessary.

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]

 

[brin]

Thanks for the information Wil. Is that the specification handbook by R. Ross? I was contemplating buying it for this project (Tempest II restoration). Any more recommendations on design information on older British (eg: Hawker) aircraft? I have some information from AVP 970.

I did have a page sent from aircraftmaterialsuk that indicated L40 was replaced by L168 but I was looking for a published link. Sounds like the materials specification handbook would help.

Thanks again

 

[WKTaylor]

brin..

You may find FAA AC23-27 Parts and Materials Substitution for Vintage useful...

http://www.airweb.faa.gov/Regulator...575E6006CA078?OpenDocument&Highlight=material

substitutions

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]