Talk:7075 aluminium alloy

General question

Why is there no 7075-T4? Is it not available commercially? It ought to exist?

Untitled

Quote:

"As with all aluminum alloys, 7075 has a specific gravity of 2.73 (0.098 lb/cubic inch)"

I think this statement is factually incorrect. Different alloys would have different specific gravities. Biscuittin (talk) 19:42, 3 September 2008 (UTC)

Units

This page, as a technical article, ought to be in SI as per the manual of style. CheesyBiscuit (talk) 14:37, 29 March 2010 (UTC)

WP:SOFIXIT. Wizard191 (talk) 16:36, 29 March 2010 (UTC)

Weldability

Perhaps there should be some information on this. --petebachant (talk) 19:31, 17 July 2013 (UTC)

It basically isn't weldable, though a bit of work with friction-stir welding of 7075-0 is showing that there may be some promise along those lines. Georgewilliamherbert (talk) 23:14, 17 July 2013 (UTC)

That information (weldable / non-weldable) is definitely important! --> Update: It is claimed that recently a method for welding of 7075 was found: https://www.asminternational.org/web/guest/news/industry/-/journal_content/56/10180/36376675/NEWS --Schwobator (talk) 12:49, 9 April 2019 (UTC)

Uses

7075 is also used in the New Horizons robotic spacecraft that is currently on route to Pluto. — Preceding unsigned comment added by Stevefeelgood (talk • contribs) 19:17, 5 August 2011 (UTC)

It's use in spacecrafts is very common, not a specialty of any recent missions. — Preceding unsigned comment added by 80.250.30.194 (talk) 02:10, 13 February 2016 (UTC)

7075-T6 was used for all structural parts of Saturn V rocket, Source "Space Systems Technology" edited by Regis D. Heitchure, Jr. — Preceding unsigned comment added by 2A02:A03F:A0A:6300:84E2:7D79:DFD8:A9B6 (talk) 12:12, 28 May 2017 (UTC)

Irrelevant "see also" link?

The "See also" section has one entry, to Northwest Airlines Flight 421, which makes no mention of aluminum 7075, nor any alloy. Perhaps there was some connection in a past version of that page, but there seems no reason for the link currently. 173.180.151.52 (talk) 20:34, 23 February 2018 (UTC) anon

If you look at the article on the plane type involved, it's mentioned there. Lovingboth (talk) 13:29, 19 February 2019 (UTC)

Weldability

Its weldable apparently if the welding material is doped with titanium nanotubes. Link -Inowen (nlfte) 10:55, 26 January 2019 (UTC)

Development date

The article on the Mitsubishi A6M Zero says 'Most of the aircraft was built of a new top-secret aluminium alloy developed by Sumitomo Metal Industries in 1936. Called "extra super duralumin"..' - with a link to this page, which says this alloy it was developed in 1943.

I can't read Japanese to understand the citation link for the 1943, but should the link in the Zero article be to somewhere else? Lovingboth (talk) 13:33, 19 February 2019 (UTC)

That must have been a mistake. The linked article Extra super duralumin and successive aluminium alloys for aircraft states that in 1935 the 7075 was developed. - 1935-Nen (Shōwa 10-nen) tōji sudeni chō jurarumiso (Super Duralumin) gōkin wa kaihatsu sa rete itaga Wildkatzen (talk) 09:22, 23 May 2019 (UTC)