1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Para No. Revisions Rev 02 2012 05 07 N Status No usage or replacement named N. Benipal, NA 1983 06 24 ESE-M8G160-A1 Inactivated; replaced by ESE-M8G160-A3 CE3N-RD863100-E81 1981 07 07 Released CE3K-RD863100-E Supp. #22 Page
2、1 of 5 GASKET, CORK/RUBBER - HIGH SWELL ESE-M8G160-A2 ESE-M8G160-A3 NOT TO BE USED FOR NEW DESIGN 1. SCOPE: The material defined by this specification is a medium granule size cork with a synthetic rubber binder. On contact with motor oil, it will exhibit high swell without disintegrating or weeping
3、. 2. APPLICATION: This specification was released originally for material used for oil pan and rocker arm cover gaskets where oil sealing at low flange loading is required. 3. REQUIREMENTS: Sample sheets and the finished gaskets, including sections with glued joints, shall meet the requirements of t
4、his specification unless otherwise specified. All tests and preconditioning shall be conducted in accordance with ASTM F 104, Type 2 materials, unless otherwise specified. Specimens are to be selected from the finished gasket. When it is not feasible to obtain specimens from the part, the supplier m
5、ust obtain written approval from the affected product engineering office to waive the requirement. Specimens cut from sample sheets shall be as follows: Tensile, 25 mm wide x 76 mm minimum length, volume, 25 x 51 mm and thickness of both as received, except as noted for oil immersion tests, para 3.1
6、.3, 3.1.4, 3.2.3 and 3.2.4. 3.1 SLAB MATERIAL A2 A3 3.1.1 Original Properties Density, kg/m3 720 - 784 560 - 640 Tensile Strength, MPa, min 1.6 1.4 Flexibility, Must Pass .As received 3X 2X .Test at -20 C after 4X 3X 5 +/- 0.5 h Compressibility, % 23 to 33 40 to 50 (Method “B“ 2.8 MPa) Recovery, % m
7、in 78 80 ENGINEERING MATERIAL SPECIFICATION ESE-M8G160-A2/A3 Page 2 of 5 A2 A3 Compression Set, % max, 85 85 (Method “B“, 22 h at 100 C, 50% deflection) 3.1.2 Oven Aged (168 h at 121 C) Tensile Change, % max -10 to -40 -10 to -42 Flexibility, Must Pass .At R.T. 5X 4X .Test at -20 C after 7X 5X 5 +/-
8、 0.5 h 3.1.3 Immersion in ASTM No. 1 Oil (168 h at 121 C) Volume Change, % +10 to +24 +10 to +25 Thickness Change, % +6 to +14 +5 to +15 Tensile Change, % -15 to -40 -20 to -45 Flexibility, Must Pass .At R.T. 5X 4X .Test at -20 C after 7X 5X 5 +/- 0.5 h 3.1.4 Immersion in ASTM No. 3 Oil (168 h at 12
9、1 C) Volume Change, % +60 to +80 +42 to +58 Thickness Change, % +23 to +33 +16 to +32 Tensile Change, % -40 to -65 -40 to -65 Flexibility, Must Pass .At R.T. 6X 4X .Test at -20 C after 6X 6X 5 +/- 0.5 h ENGINEERING MATERIAL SPECIFICATION ESE-M8G160-A2/A3 Page 3 of 5 3.1.5 Dimensional Stability Test
10、Method: 3 test specimens approximately 25 x 190 mm are 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
11、 of the air) for 70 h minimum at 21 to 29 C and 50 + 5% 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 15-20% R.H. Length of test specimen
12、s is measured after each of these two 7-day exposure periods. Average % change in length after each exposure is calculated, based on the original lengths previously determined. Permissible dimensional changes are as follows: A2 A3 After 7 days At 38 C and 95-100% R.H., % 0 to +4.2 +1.0 to +4.8 At 38
13、 C and 15-20% R.H., % -0.6 to 0 -1.4 to 0 3.2 FINISHED GASKETS (With Adhesive) 3.2.1 Original Properties Density, kg/m3 688 to 784 560 - 640 Flexibility, Must Pass .As Received 3X 3X .Test at -20 C after 5X 4X 5 +/- 0.5 h Compressibility (adhesive 28 to 42 40 to 50 facing down), % (Method “B“, 2.8 M
14、Pa load) Recovery, % min 75 78 3.2.2 Oven Aged 168 h at 121 C Flexibility, Must Pass .At R.T. 4X 4X .Test at -20 C after 6X 5X 5 +/- 0.5 h A2 A3 ENGINEERING MATERIAL SPECIFICATION ESE-M8G160-A2/A3 Page 4 of 5 3.2.3 Immersion in ASTM No. 1 Oil (168 h at 121 C) Volume Change, % +10 to +25 +10 to +25 T
15、hickness Change, % +5 to +15 +5 to +15 Flexibility, Must Pass .At R.T. 4X 4X .Test at -20 C after 6X 5X 5 +/- 0.5 h 3.2.4 Immersion in ASTM No. 3 Oil (168 h at 121 C) Volume Change, % +60 to +75 +40 to +60 Thickness Change, % +17 to +29 +14 to +30 Flexibility, Must Pass .At R.T. 4X 4X .Test at -20 C
16、 after 6X 6X 5 +/- 0.5 h 3.2.5 Dimensional Stability After 7 days At 38 C and 95-100% R.H., % 0 to +4.2 +1.0 to +4.8 At 38 C and 5-10% R.H., % -0.6 to 0 -1.4 to 0 3.2.6 Ash, % 9.0 to 13.0 8.5 to 12.0 (ASTM D 297) 3.2.7 Toluene Extract, % 12.0 to 18.0 24.0 to 28.0 (ASTM D 297, except to calculate use
17、 weight of sample before and after extraction) 3.2.8 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 spectra established for initial approval shall constitute the
18、reference standard and shall be kept on file at the designated material laboratory. All samples shall produce spectra that correspond to the reference standard when tested under the same conditions as those specified on the master spectrum. ENGINEERING MATERIAL SPECIFICATION ESE-M8G160-A2/A3 Page 5
19、of 5 3.3 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.
