MATERIAL SPECIFICATION #2512-8

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03535A000500070054-9
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 5
• Document Creation Date: December 27, 2016
• Document Release Date: September 13, 2012
• Sequence Number: 54
• Publication Date: May 25, 1959
• Content Type: MISC

Declassified in Part - Sanitized Copy Approved for ?
Release 2012/09/13: SLIP u'u't
CIA-RDP78-03535A000500070054-9
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subjected to individual systematic review.
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25 HOY 1959
MATERIAL SPECIFICATIONS #2512-8
This document Is part of an integrated
Aluminum Alloy Castings, Investment Cast fife. It separated from the tile it must be
sebieciee to individual systematic review.
7 Si - 0.3 Mg. (356-T6)
Solution and Precipitation Treated
S.A.E. Specification AMS-4284C (11-1-54) is used as a general reference
for these specifications.
1. Acknowledgement: A vendor shall mention this specification number
in all quotations and when acknowledging purchase orders.
2. Composition:
Silicon 6.5 - 7.5
Magnesium 0.20 .? 0.-40
Iron 0.6 Max.
Manganese 0.30 Max.
Zinc 0.30 Max.
Copper 0.20 Max.
Titanium 0.20 Max.
Other impurities (ea.) 0.05 Max.
Other impurities (total) 0.15 Max.
Aluminum Remainder
3. Condition: Solution and precipitation heat treated.
4. Technical Requirements:
4.1. Castings:
4.1.1. Castings; after removal from molds, shall be cooled
at rates which will be as uniform as practicable for
castings of each part number.
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Declassified in Part - Sanitized Copy Approved for Release 2012/09/13: CIA-RDP78-03535A000500070054-9
Declassified in Part- Sanitized Copy Approved forRelease2012/09/13 : CIA-RDP78-03535A000500070054-9
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4.2. Heat Treatment:
4.2.1. Production castings, shall be heated to the proper
temperature and for the proper time for solution
treatment and quenched at a rate not faster than
that produced by immersion in water which is boil-
ing at the time of immersion.
4.2.2. Production castings shall, after solution treat-
ment, as in 4.2.1., be treated uniformly to not
lower than 3000 F, held at heat for not less than
1.5 hr., and cooled in air.
5. Quality:
5.1. Castings shall be uniform in quality and condition, sound,
and free from foreign materials and from internal and ex-
ternal defects detrimental to fabrication or to performance
of parts. Castings shall be well cleaned.
5.2. The castings shall be produced under the production quality
control standards for non-aircraft parts in common usage by
the vendor. The method of inspection, radiographic or other
will be noted in the vendors quotation.
5.3. Castings shall not be repaired by plugging, welding, or other
methods, without written permission from purchaser.
5.4. Castings shall not be impregnated, chemically treated, or
coated to prevent leakage unless specified or allowed by
written permission.
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6. Approval:
6.1. To assure uniform quality, sample castings from new or
reworked molds shall be approved by purchaser, unless
such approval be waived.
6.2. Two sample castings from the new mold shall be approved
by the purchaser before the production run is started by
the vendor.
6.3. Vendor shall use the same foundry practices and the same
heat treating procedures for production castings as for
approved sample castings. If necessary to make any change,
vendor shall notify purchaser immediately of such changes
7. Rejections:
7.1. Castings not conforming to this specification or to
authorized modifications will be subject to rejection.
8. Tools:
8.1. Vendor shall agree, in the absence of objection as noted
in quotation, to keep and safeguard all permanent molds
and tools resulting from this contract for a period of
not less than two years from the date of contract ter-
mination. After this period the vendor shall dispose of
them in accordance with the purchasers instructions. It
is further agreed that said permanent molds and tools are
the property of the U. S. Government.
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9. General:
9.1. Three prints of the finished machining drawing shall be ?
forwarded by the purchaser with the request for quotations.
The vendor will mark all three prints as to location and
amount of machining stock remaining as cast. Two of these
prints will be forwarded to the purchaser with the quota-
tion and shall be used as the casting drawings, except for
changes to be mutually agreed upon by vendor and purchaser
upon review of the quotation.
9.2. Three copies of this Specification #2512-8 shall be forwarded
by the purchaser with the request for quotations. The vendor
will mark in ink any proposed changes or additions on one
of the two copies returned with the quotation. Agreement
shall be reached by the purchaser and vendor on all proposals
prior to letting the contract.
Declassified in Part - Sanitized Copy Approved for Release 2012/09/13: CIA-RDP78-03535A000500070054-9