1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 09 29 N-STATUS No Replacement Named, No known use C. Mracna, NA 2004 10 15 Revised Inserted 3.0; Deleted 3.3, 3.4 Revised 3. 1982 05 26 Released (Replaces SQ-M2D9511-A and SQ-M2D9513-A) SM/EQ 9026 TP Printed copies are uncontrolled Copyri
2、ght 2009, Ford Global Technologies, LLC Page 1 of 4 POLYACRYLIC RUBBER, HIGH HEAT AND OIL RESISTANT SQ-M2D9517-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a high heat and oil resistant polyacrylic rubber. 2. APPLICATION This material was originally released
3、 for seals in automatic transmission. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 TESTING OF STANDARD SPECIMENS Note: All tests are to be car
4、ried out on slab samples (thickness 1.9 - 2.3 mm) and buttons (ASTM D 395, test specimen Type 1) manufactured from the same material and under equivalent cure conditions as for production parts. 3.1.1 Original Physical Properties 3.1.1.1 Hardness Shore A 69 - 79 (ASTM D 2240, 2 mm samples plied up)
5、3.1.1.2 Tensile Strength, min 10 MPa (ASTM D 412, Die C) 3.1.1.3 Elongation at Break, min 100% (ASTM D 412, Die C) 3.1.2 Change After 70 h Ageing in Air at 150 +/- 2 C (ASTM D 573) 3.1.2.1 Hardness Shore A 0 to +8 Units 3.1.2.2 Tensile Strength -20 to +10% 3.1.2.3 Elongation at Break -25 to +5% ENGI
6、NEERING MATERIAL SPECIFICATIONSQ-M2D9517-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 4 3.1.3 Change After 70 h Ageing in ASTM Oil No. 1 at 150 +/- 2 C (ASTM D 471) 3.1.3.1 Hardness Shore A -5 to +5 Units 3.1.3.2 Tensile Strength -10 to +20% 3.1.3.3 Elonga
7、tion at Break -20 to +10% 3.1.3.4 Volume -4 to +3% 3.1.4 Change After 70 h Ageing in ASTM Oil No. 3 at 150 +/- 2 C (ASTM D 471) 3.1.4.1 Hardness Shore A -17 to -5 Units 3.1.4.2 Tensile Strength -25 to +5% 3.1.4.3 Elongation at Break -7 to +30% 3.1.4.4 Volume +10 to +18% 3.1.5 Change After Ageing in
8、Minimum of Two Approved Automatic Transmission Fluids Having Different Additive Packages According to Specification SQ-M2C9010-A, 168 h at 150 +/- 2 C (ASTM D 471) 3.1.5.1 Hardness Shore A -8 to +2 Units 3.1.5.2 Tensile Strength -20 to +10% 3.1.5.3 Elongation at Break -40 to 0% 3.1.5.4 Volume +4 to
9、10% 3.1.5.5 Bend Test No cracks Test Method: Three test specimens (ASTM D 412, Die C) are to be bent completely flat against itself. 3.1.6 Compression Set, max 35% (ASTM D 395, Method B, test specimen Type 1, 22 h at 150 +/- 2 C) 3.1.7 Low Temperature Resistance (ASTM D 746, Method B) Must not be b
10、rittle after 3 minutes at -5 C. ENGINEERING MATERIAL SPECIFICATIONSQ-M2D9517-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 4 3.1.8 Density 1.30 - 1.35 g/cm3(ASTM D 297) 3.1.9 Ash Content, max 1.4% (FLTM EU-BO 6-2, test temperature 800 +/- 25 C) 3.2 TESTING
11、FINISHED PARTS 3.2.1 Original Physical Properties 3.2.1.1 Hardness, IRHD 69 - 79 (ASTM D 1415, micro tester) Test Method: By means of a double bladed cutter specimens of 1 to 1.2 mm in thickness are to be cut out of the part. The section shall be cut in axial direction of the part. The sectional pla
12、nes shall be parallel and free from grooves. After twin coated pressure sensitive tape (Sello tape) has been fixed on a ground steel disc the specimens must be fixed with complete face contact on the tape. For each aging test 3 parts are to be cut into two equal parts in an axial direction, one half
13、 part shall be aged and on the other half part the original hardness shall be measured. The average of three hardness measurements on different specimens shall be taken on each half part and be reported. The original and the changed hardness shall be measured on one and the same part. 3.2.2 Change A
14、fter 70 h Ageing in Air at 150 +/- 2 C (ASTM D 573) 3.2.2.1 Hardness 0 to +8 Units 3.2.3 Change After 70 h Ageing in ASTM Oil No. 1 at 150 +/- 2 C (ASTM D 471) 3.2.3.1 Hardness -5 to +5 Units 3.2.3.2 Volume -5% to +5% Test Method: The weight of specimen for volume change determination shall be 0.5 g
15、 minimum. In some instances this will require several small parts to be used as the test specimen. 3.2.4 Change After 70 h Ageing in ASTM Oil No. 3 at 150 + 2 C (ASTM D 471) 3.2.4.1 Hardness -20 to -5 Units 3.2.4.2 Volume +10 to +18% ENGINEERING MATERIAL SPECIFICATIONSQ-M2D9517-APrinted copies are u
16、ncontrolled Copyright 2009, Ford Global Technologies, LLC Page 4 of 4 3.2.5 Change After Ageing in Minimum of Two Approved Automatic Transmission Fluids Having Different Additive Packages According to Specification SQ-M2C9010-A, 168 h at 150 C +2 C (ASTM D 471) 3.2.5.1 Hardness -8 to +5 Units 3.2.5.
17、2 Volume +2 to +10% 3.2.5.3 Bend Test No cracks Test Method: Three sections of finished parts are to be bent completely flat against itself. 3.2.6 Testing for Quality Check for uniform mixture by means of microscopical examination of the cut section, (to be free from nodules and foreign matters. No accumulation of filler material). Magnification: X 20 - 30 3.2.7 Density 1.30 - 1.35 g/cm3(ASTM D 297) 3.2.8 Ash Content, max 1.4% (FLTM EU-BO 006-02, test temperature) 800 +/- 25 C)
