1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Para No. Revisions Rev 03 2012 05 07 N Status No usage or replacement named N. Benipal, NA 1983 01 14 3.3.1 Was 45-55 CEM2-897050-C 1981 08 27 Released CEL2-892224-C3 Page 1 of 2 GASKET, STEEL/NITRILE BUTADIENE RUBBER ESA-M8
2、G159-A AND PHENOLIC RESIN COATED NOT TO BE USED FOR NEW DESIGN 1. SCOPE: The material defined by this specification is metal base, coated on one side with a firmly bonded synthetic rubber and a phenolic coating on the opposite side. 2. APPLICATION: This specification was released originally for mate
3、rial used as a noise and vibration insulator for front disc brake shoes. 3. REQUIREMENTS: 3.1 THICKNESS OF COATING The material shall be coated with any thickness of nitrile butadiene rubber to meet the requirements of the application and shall be specified according to individual engineering drawin
4、gs. 3.2 METAL BASE The hardness and thickness shall be specified according to individual engineering drawings. In addition, the metal base shall conform the following specifications: 3.2.1 SAE 1010 or equivalent 3.2.2 Tensile Strength, min 269 MPa (ASTM E-8) 3.3 RUBBER COATING Shall be suitably comp
5、ounded nitrile butadiene rubber which, when press cured, shall have the following characteristics (1.9 mm, thick slab cured 12 min at 153 C): 3.3.1 Hardness, Durometer “A“ As specified on the engineering (ASTM D 2240) drawing (either 45-55 or 70-80) 3.3.2 Tensile Strength, min 6.9 MPa (ASTM D 412, D
6、ie “A“) 3.3.3 Recovery, min 70% (ASTM F 36, Procedure “E“) ENGINEERING MATERIAL SPECIFICATION ESA-M8G159-A Page 2 of 2 3.3.4 Compression Set, max 25% (ASTM D 395, Method “B“, 25% deflection, 22 h at 70 +/- 1 C) 3.3.5 Immersion in Liquids (ASTM D 471) Test Thickness Immersion Fluid Conditions Change,
7、 max ASTM Reference Fuel “A“ 5 h at 23 +/- 2 C 5% ASTM Reference Fuel “B“ 5 h at 23 +/- 2 C 25% ASTM Oil No. 1 5 h at 149 +/- 3 C 10% ASTM Oil No. 3 5 h at 149 +/- 3 C 15% 3.4 PHENOLIC COATING 3.4.1 Thickness .020 -.075 mm 3.4.2 Corrosion Resistance (ASTM D 2247, 24 hr) No rust Where it is necessary
8、 that coating thickness and corrosion resistance requirements be met in holes, recesses, edges, etc., engineering drawings will so specify. 3.5 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS Ford Motor Company, at its option, may conduct infrared and/or thermal analysis of material/parts supplie
9、d to this specification. The curves established for initial approval shall constitute the reference standard and shall be kept on file at Central Laboratory. All samples shall produce curves that correspond to the reference standard when tested under the same conditions as those specified on the mas
10、ter curve. 3.6 SUPPLIERS RESPONSIBILITY Material supplied to this specification must be equivalent to that originally approved. Changes in formulation or processing shall not be made without prior approval as described in Supplier Procedure I-A. 4. APPROVAL OF SUPPLIERS: Suppliers to this specification must be approved by the affected product engineering office. Procedure for gaining approval of a specific material to a new/ existing ES-M specification is contained in Supplier Procedure I-A. Approved new suppliers will be added to the engineering Materials Approved Source List.
