ARMY A-A-52444 A-2011 GASKETS COMBINATION OF METAL AND NONASBESTOS FACING MATERIAL (METRIC).pdf
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1、 Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data that may improve this document should be sent to DAMI_STANDARDIZATIONconus.army.mil or U.S. Army RDECOM, Tank Automotive Research, Development and Engineering Center, ATTN: RDTA-EN/STND/TRANS MS #268, 6501
2、 E. 11 Mile Road, Warren, MI 48397-5000. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil. AMSC N/A FSC 2805 METRIC A-A-52444A February 15, 2011 SUPERSEDING A-A-52444 August 6, 1993 CO
3、MMERCIAL ITEM DESCRIPTION GASKETS: COMBINATION OF METAL AND NONASBESTOS FACING MATERIAL (METRIC) The General Services Administration has authorized the use of this commercial item description (CID) as a replacement for MIL-G-14243D, which is canceled. 1. SCOPE. This CID covers three types of combina
4、tion gaskets made from a combination of metal and nonasbestos facing material. These combination gaskets are used in automotive vehicle engine applications where they will be subjected to high temperatures as in cylinder heads and exhaust manifolds. The combination gaskets are referred to herein as
5、“gaskets”. 2. CLASSIFICATION. The gaskets shall be of the following types (see 7.2): Type I - Steel sheet with nonasbestos on both surfaces. Type II - Steel sheet with nonasbestos on one surface. Type III - Nonasbestos sheathed in sheet metal. 3. SALIENT CHARACTERISTICS 3.1 Materials. Unless otherwi
6、se specified herein, the materials used to make the gaskets shall be in accordance with the manufacturers materials specifications. The use of recovered material made in compliance to regulatory requirements is acceptable provided all the requirements of this CID are met (see 4). 3.1.1 Steel sheet.
7、Steel sheet shall conform to ASTM A1008/ A1008M for low carbon (0.15 percent (%) maximum), cold-rolled, commercial quality steel. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52444A 2 3.1.2 Steel strip. Steel strip shall conform to ASTM A109/
8、A109M for low carbon (0.15% maximum), cold-rolled, temper 4 or 5, matte (dull) finish steel. 3.1.3 Long terne steel sheet. Long terne steel sheet shall conform to ASTM A308/ A308M for commercial quality, oiled, coating designation LT35 steel. 3.1.4 Tin plate. Tin plate shall conform to ASTM A623 for
9、 steel as base metal (Type-optional), tin coating weight designation 25, temper designation T-4, box annealed tin plate. 3.1.5 Copper sheet. Copper sheet shall conform to ASTM B152/ B152M for cold-rolled, soft anneal designation O60 copper. 3.1.6 Other metals. When specified (see 7.2), other metals
10、may be used in the fabrication of gaskets. 3.2 Design and construction. The details of design and construction (e.g., configuration, size, dimensions) shall be in accordance with the applicable engineering drawing (AED) (see 7.2). 3.2.1 Type I gaskets. Type I gaskets shall be made from steel, sheet
11、or strip, as specified under 3.1.1 through 3.1.4 and nonasbestos material on both surfaces. Type I gaskets shall have the steel sheet recessed and formed so as to have closely spaced tangs projecting from both surfaces. The tangs shall hold the nonasbestos materials to the metal after being pressed.
12、 When required to prevent delamination, adhesives may be used. The nonasbestos material shall be plied evenly on both surfaces of the metal with the same thickness on each surface. 3.2.2 Type II gaskets. Type II gaskets shall be made from steel sheet as specified in 3.1.3 or 3.1.4 and nonasbestos ma
13、terial on one surface. The type II gaskets shall have the steel sheet recessed and formed so as to have closely spaced tangs projecting from one surface only. The tangs shall hold the nonasbestos material to the metal after being pressed. When required to prevent delamination, adhesives may be used.
14、 The nonasbestos material shall be plied evenly on one surface and shall be uniform in thickness. The sheet metal shall be formed to protect the outer edges of the gasket but shall not be closed over the nonasbestos material at the outer edges. 3.2.3 Type III gaskets. Type III gaskets shall be made
15、from nonasbestos material sheathed on both faces with metallic sheets as specified in 3.1.3, 3.1.4 or 3.1.5. Metallic grommets shall band the gasket, as specified in the AED. Adhesives shall not be used. The metallic sheets shall be formed to protect the outer edges of the gasket but shall not be cl
16、osed over the nonasbestos material at the outer edges. 3.2.4 Grommets. Grommets used to fabricate type III gaskets shall be made of material as specified in the AED and, if not specified, in accordance with the manufacturers specifications/ drawings. Provided by IHSNot for ResaleNo reproduction or n
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