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 CEL-892224-C3 Page 1 of 4 GASKET, STEEL/NITRILE BUTADIENE RUBBER, PHENOL
2、IC RESIN, ESA-M8G159-B AND ADHESIVE 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 originall
3、y for material used as a noise and vibration insulator for front disc brake shoes in service applications. 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 accordin
4、g to individual engineering drawings. 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 RUB
5、BER COATING Shall be suitably compounded 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 St
6、rength, min 6.9 MPa (ASTM D 412, Die “A“) 3.3.3 Recovery, min 70% (ASTM F 36, Procedure “E“) ENGINEERING MATERIAL SPECIFICATION ESA-M8G159-B Page 2 of 4 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
7、Immersion Fluid Conditions Change, 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
8、 hr) No rust Where it is necessary that coating thickness and corrosion resistance requirements be met in holes, recesses, edges, etc., engineering drawings will so specify. 3.5 ADHESIVE COATING 3.5.1 The coating shall be a heat resistant pressure sensitive acrylate resin. 3.5.2 Thickness 0.0005 - 0
9、.0013 mm 3.5.3 Softening Point, min 120 C (ASTM D 816, LC steel to LC steel) 3.5.4 Shear Strength, Average, min (ASTM D 1002, CRLC to CRLC) Room Temperature 0.60 MPa Heat Aged 0.20 MPa (1 h at 121 C) Cold Aged 0.60 MPa (4 h at -40 C) Fluid Aged 0.60 MPa (22 h at room temperature in distilled water)
10、Fluid Aged 0.45 MPa (22 h at room temperature in ESA-M6C25-A brake fluid) ENGINEERING MATERIAL SPECIFICATION ESA-M8G159-B Page 3 of 4 Test Method: Adhesive applied over a 645.16 mm2 area at one end of the coupons and allowed to air dry 24 h then, oven dried 10 to 20 min at 80 C. Two coupons, each be
11、aring adhesive with a dry film thickness from .09-.14 mm are assembled per ASTM D 1002 Figure 1. A pressure of 2.0 MPa is applied to the test specimens for 30 s to assure contact. Specimens to be aged at room temperature for 24 h prior to subjection to various environmental conditions. Adhesion test
12、ing conducted immediately after removal from various environmental conditions. Test specimens are made up in multiples of five and the resulting test values are averaged to determine the shear strength. Pull rate 50.8 mm/min. 3.5.5 Cold Shock Test No failure (Fisher cold shock test, -40 C, 1.2m) 3.5
13、.6 The engineering drawing shall indicate which side will be adhesive coated. 3.6 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS Ford Motor Company, at its option, may conduct infrared and/or thermal analysis of material/parts supplied to this specification. The curves established for initial ap
14、proval 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 master curve. 3.7 SUPPLIERS RESPONSIBILITY Material supplied to t
15、his 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 offic
16、e. 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. 5. GENERAL INFORMATION: This information is for direction of the user and is
17、not a requirement for the supplier. 5.1 ADHESIVE DESCRIPTION 5.1.1 Viscosity 4000 MPas (Brookfield RVF, #4 spindle, 20 rpm) ENGINEERING MATERIAL SPECIFICATION ESA-M8G159-B Page 4 of 4 5.1.2 Specific Gravity 0.895 (ASTM D 1217) 5.1.3 Flash Point Less than -20 C (ASTM D 56) 5.1.4 Non-Volatiles 28% (3 h steambath, 16 h at 104 C) 5.1.5 Color Red
