WIX Archives
Maybe of some help...
Posted by bdk on Thu Apr 17, 2003 11:59:40 AM
In reply top Aircraft metal specs help?? posted by Jason on Thu Apr 17, 2003 03:21:25 AM
I think you probably need to talk directly to someone in the casting industry. This specification was obsoleted in 1943! I can't find any direct crossover with what I can access commercially or via military specifications (which have mostly transitioned to commercially maintained- AMS, SAE, etc.).
QQ-C-390 appears to be brass and bronze, while QQ-A-390 appears to be aluminum alloys.
Hope this has been at least somewhat helpful!
Brandon
==============================
AN-QQ-A-390 (3)
HIST
--------------------
Document Summary
Title: ALUMINUM-ALLOY (A1-195); SAND CASTINGS (SUPERSEDED BY AN-A-35)
Document Type: AN Drawings
FSC: HIST
Preparing Activity:
Publication Date: 30 Jul 1943
In Lieu Of: No
Revision Level Issue Date Pages
AN-QQ-A-390 (3) 30 Jul 1943 1
AN-QQ-A-390 (2) 29 May 1942 1
AN-QQ-A-390 (1) 11 Sep 1941 1
AN-QQ-A-390 10 Feb 1941 4
--------------------
Referenced Documents
Document number: AN-QQ-A-390 (3)
====================
In the following link, the obsolete QQ-A-390 specification is replaced with AMS 4855 (Leaded Red Brass, Sand and Centrifugal Castings 85Cu - 5.0Sn - 5.0Pb - 5.0Zn as Cast UNS C83600):
https://aais.ria.army.mil/aais/Padds_web/DAAE2002R0237/attach_exhib/m131f385sectionc_revA.pdf
I can't say whether or not that is appropriate for your application however.
: Can anybody help me with an old casting metal specificatio
: n "QQ-A-390, class 2"?
:
: What supercedes it?
:
: Thought somebody out there might have an old specs manual
: or something?
:
: Thanks
:
: Jason
BRASS AND BRONZE STANDARD CASTING ALLOYS