1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 10 21 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.6, 3.7 & 4 1998 08 12 Revised Revised Table 1 K. Gerhards D. Whyte 1997 06 26 Activated K. Gerhards D. Whyte Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LL
2、C Page 1 of 5 POLYURETHANE (PUR) FOAM, CELLULAR GASKET WSS-M2D496-A1/A2/A3/A4/ A5/A6/A7/A8/A9/A10/A11 1. SCOPE The materials defined by these specifications are high density cellular polyurethane foams with low compression set. 2. APPLICATION These specifications were released originally for materia
3、l used for gaskets in the instrument cluster and speed control. 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). 3.4 APPEARANCE The foam shall have a
4、homogeneous medium sized cell structure with no large voids or cracks which may impair the serviceability of the part. 3.5 TEST SPECIMEN The following material properties shall be determined on specimens taken from the molded part with surface skin cut off wherever possible. In case the part dimensi
5、ons do not allow the preparation of specimens as requested, specimens shall be prepared from a 200 x 200 x 40 mm molded foam block. The specimen shall be free of voids, hard spots and densification lines. 3.5.1 Color (see Table 1) 3.5.2 Density, kg/m3 +/- 10, % (see Table 1) (ISO 845/ASTM D 3574, Te
6、st A) 3.5.3 Tensile Strength, kPa, min (see Table 1) (ISO 1798/ASTM D 3574, Test E, 50 mm bench marks, 5 specimens min) 3.5.4 Elongation at Break, %, min (see Table 1) (Test according to para 3.5.3) 3.5.5 Tear Strength, N/m, min (see Table 1) (ISO DIS 8067/ASTM D 3574, Test F, 50 mm/minute test spee
7、d) ENGINEERING MATERIAL SPECIFICATIONWSS-M2D496-A1/A2/A3/A4/A5/A6/A7/A8/A9/A10/A11 Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 of 5 3.5.6 Compression Set, %, max (see Table 1) (ISO 1856, Method A/ASTM D 3574, Test D, 22 h at 70 C, 50% deflection Ct calculatio
8、n, 3 specimens min) 3.5.7 Compression Deflection Stress, kPa (see Table 1) (ISO 3386/1 at 25% compression, 25.4 x 25.4 mm specimen size, determine sample thickness under 45 kg preload, 12.7 mm/minute test speed, 3 specimens min) 3.5.8 Heat Aging (ISO 2440/ASTM D 3574, Test K, 22 h at 140 +/- 2 C) 3.
9、5.8.1 Compression Deflection (see Table 1) Stress Change, %, max (Test according to para 3.5.7) 3.5.9 Humidity Aging (AUTOCLAVE) (ISO 2440/ASTM 3574, Test J, 100 x 100 x 50 mm specimen, 5 h at 120 C) 3.5.9.1 Compression Deflection (see Table 1) Stress Change, +/- %, max (Test according to para 3.5.7
10、) 3.5.10 Dimensional Stability, % (see Table 1) Test Method: Linear dimensional expansion or shrinkage after being subjected to dry heat at 80 +/- 2 C for 3 h. Specimen size should be as large as sample part permits but should not exceed 300 x 300 mm x part thickness. 3.5.11 FOGGING (SAE J1756, 3 h
11、at 100 C heating, 21 C cooling plate, post test conditioning 1 + 16 h) Fog Number, min 70 Formation of clear film, droplets or crystals is cause for rejection. 3.5.12 Odor, max Rating 2 (FLTM BO 131-01/SAE J1351) 3.5.13 Cold Flexibility at -40 C No cracking (FLTM BN 102-01, diameter of mandrel shall
12、 be 5 times of specimen thickness) ENGINEERING MATERIAL SPECIFICATIONWSS-M2D496-A1/A2/A3/A4/A5/A6/A7/A8/A9/A10/A11 Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 3 of 5 3.5.14 Solvent Resistance No surface tackiness or evidence of foam deterioration Test Method: I
13、mmerse specimens of the foam in petroleum light naphtha, trichloroethylene, currently released antifreeze (50/50 with water), currently released Windshield Washer Solution, currently released Electrical Grease, and a soap solution (50/50 with water). 3.5.15 Flammability (ISO 3795) Burn Rate, max 100
14、 mm/minute ENGINEERING MATERIAL SPECIFICATIONWSS-M2D496-A1/A2/A3/A4/A5/A6/A7/A8/A9/A10/A11 Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 4 of 5 Table 1 _ A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 _ 3.5.1 black black black black black black black black black black black
15、Color 3.5.2 240 320 400 240 320 240 320 480 240 320 400 Density 3.5.3 137 205 240 275 518 553 829 1382 1030 1380 1725 Tensile Strength 3.5.4 100 100 100 100 100 100 100 90 50 50 50 Elongation 3.5.5 (A) Tear 0.2 0.4 0.7 0.5 0.9 1 1.8 2.3 2 2.5 3.5 Strength 3.5.6 10 10 10 10 10 10 10 10 10 10 10 Compr
16、ession Set 3.5.7 7-35 20-55 34-83 28-55 47-90 47-96 89-161 206 138 275 410 Compression -442 -345 -552 -895 Deflection 3.5.8 (B) Heat 90 60 60 60 60 60 60 60 60 60 60 Aging 3.5.9 60 60 60 60 60 60 60 60 60 60 60 Humidity Aging 3.5.10 +/- +/- +/- +/- +/- +/- +/- +/- +/- +/- +/- Dimen- 4.0 4.0 4.0 2.5
17、2.5 2.5 2.5 2.5 5.0 5.0 5.0 sional Stability Note (A): Tear strength should be ASTM D624 Die C Note (B): Heat aging is at 120 C for Types A1, A2, A3 ENGINEERING MATERIAL SPECIFICATIONWSS-M2D496-A1/A2/A3/A4/A5/A6/A7/A8/A9/A10/A11 Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 5 of 5 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of these specifications. 5.1 RECYCLING CODE PUR
