1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Para No. Revisions Rev 03 2012 04 12 N Status No usage or replacement named N. Benipal, NA 1979 11 15 ESE-M8G142-A2 Revised PER R3.00-6965 CE3J-RD740100-290 1974 07 09 Released CE3D-CR700996 Page 1 of 4 GASKET, MEDIUM CORK/C
2、HLOROSULFONATED POLYETHYLENE ESE-M8G142-A1 SPONGE BINDER ESE-M8G142-A2 NOT TO BE USED FOR NEW DESIGN 1. SCOPE: The materials defined by these specifications are medium granule size cork with an elastomeric sponge binder whose major constituent is chlorosulfonated polyethylene. 2. APPLICATION: These
3、specifications were released originally for materials used in rocker arm cover gaskets. 3. REQUIREMENTS: Sample sheets and the finished gaskets, including sections with glued joints, shall meet the requirements of these specifications unless otherwise specified. Preconditioning and specimen sizes sh
4、all meet ASTM F 104, Type 2 materials, unless otherwise specified. Specimens are to be selected from the finished gasket except for para 3.7. When it is not feasible to obtain specimens from the part, they shall be obtained from sample sheets. Specimens cut from sample sheets shall be as follows: Te
5、nsile test 1 in (25 mm) wide x 3 in (76 mm) minimum length, volume test 1 x 2 in (25 x 51 mm). The thickness of these specimens is as received except as noted for oil and fuel immersion tests, paras 3.3, 3.4 and 3.5 When A1 or A2 material is not specified, A1 is the mandatory material. All requireme
6、nts are for A1 & A2, except where noted. 3.1 ORIGINAL PROPERTIES 3.1.1 Density, min 34 lb/ft3 (545 kg/m3) 3.1.2 Hardness, Durometer “A“ 40 - 55 (ASTM D 2240) 3.1.3 Tensile Strength, min 125 psi (862 kPa) 3.1.4 Flexibility, F5 Must pass 3.1.5 Compressibility and Recovery (ASTM F 36, Procedure “B“, ex
7、cept no more than 2 parts may be plied together to obtain a minimum width of 0.6 in (15 mm) Load, psi (MPa) Compressibility, % Recovery, % min A1 A2 A1 A2 ENGINEERING MATERIAL SPECIFICATION ESE-M8G142-A1/A2 Page 2 of 4 100 (0.7) 35-45 35-45 80 80 400 (2.8) 60-70 55-65 80 80 1000 (6.9) 70-80 60-75 70
8、 65 3.1.6 Compression Set, max 82% (ASTM D 395, Method “A“, 70 h at 100 C) 3.1.7 Ozone Rating ESB-M9P1-A (FLTM BP 1-1 at 25% elongation) 3.2 HEAT AGED (ASTM D 573, 168 h at 121 C) 3.2.1 Tensile Strength Change 0 to +15% 3.2.2 Flexibility, F5 Must pass 3.2.3 Compressibility & Recovery (ASTM F 36, Pro
9、cedure “B“, 400 psi (2.8 MPa) load) Compressibility 50 - 65% Recovery, min 75% 3.3 IMMERSION IN ASTM OIL No. 1 (ASTM D 471, 168 h at 121 +/- 3 C, specimen shall be buffed to 0.125 +/- 0.005 in (3.18 +/- 0.13 mm) thickness, if sample sheets or parts exceed this thickness) A1 A2 3.3.1 Volume Change, m
10、ax -10% 15% 3.3.2 Tensile Strength Change, max -15% -15% 3.3.3 Flexibility, F5 Must pass Must pass 3.3.4 Compressibility & Recovery (ASTM F 36, Procedure “B“, 400 psi (2.8 MPa) load) Compressibility 45 - 60% Recovery, min 60% 3.4 IMMERSION IN ASTM OIL No. 3 (ASTM D 471, 168 h at 121 +/- 3 C, specime
11、ns thickness requirements per para 3.3) 3.4.1 Volume Change, max +18% 3.4.2 Tensile Strength Change, max -40% 3.4.3 Flexibility, F5 Must pass 3.4.4 Compressibility & Recovery (ASTM F 36, Procedure “B“, 400 psi (2.8 MPa) load) ENGINEERING MATERIAL SPECIFICATION ESE-M8G142-A1/A2 Page 3 of 4 Compressib
12、ility 55 - 75% 60- 80% Recovery, min 60% 65% 3.5 IMMERSION IN ASTM FUEL “A“ (ASTM D 471, 22 h at 23 +/- 2 C, specimens thickness requirements per para 3.3) 3.5.1 Volume Change 0 to +15% -5 to +10% 3.6 DIMENSIONAL STABILITY Test Method: Three test specimens approximately 1 x 7.5 in (25 x 190 mm) are
13、cut from sample sheets. Specimens from finished gaskets may differ in width and length and should not include bolt holes. These specimens are preconditioned in a controlled humidity room or in a closed chamber with gentle mechanical circulation of the air for 70 h minimum at 21 to 29 C and 50 +/- 5%
14、 R.H. Specimens are then measured for original length. Expose vertically hung test specimens in a controlled temperature and humidity chamber for 7 days at 38 C and 95-100% R.H., followed by 7 days at 38 C and 5- 10% R.H. Length of test specimens is measured after each of these two 7 day exposure pe
15、riods. Average percent change in length after each exposure period is calculated, based on the original sample lengths previously determined. Permissible dimensional changes are as follows: After 7 days at 38 C and 95-100% R.H., max +3.5% After 7 days at 100 F and 5-10% R.H., max -1.8% 3.7 CORK GRAI
16、N SIZE (ASTM E 11) Medium grain size - will pass #16 sieve and will be retained on a #40 sieve. The supplier shall certify the grain size. 3.8 INFRARED SPECTROPHOTOMETRY, BINDER Ford Motor Company, at its option, may conduct infrared analysis of material/parts supplied to this specification. The cur
17、ves 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 master curve. The major constituent
18、 shall be cured chlorosulfonated polyethylene sponge. 3.9 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
19、 OF SUPPLIERS: Suppliers to this specification must be approved by the affected product engineering office. Procedure for gaining approval of a specific ENGINEERING MATERIAL SPECIFICATION ESE-M8G142-A1/A2 Page 4 of 4 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.
