1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2005 01 13 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.6, 3.7 & 4 1995 02 01 Released EP00E10460360001 K. GerhardsPrinted copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 1 of 4 UNSATURATED POLYESTER (UP), 30% GLAS
2、S FIBER REINFORCED WSS-M3D170-A2 SHEET MOLDING COMPOUND 1. SCOPE The material defined by this specification is a 30%, 25 mm nominal long glass fiber reinforced unsaturated polyester (UP) sheet molding compound. 2. APPLICATION This specification was released originally for material used as noise shie
3、ld below the engine compartment. 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). 3.1.1 All requirements of this specification, identified by symbol (
4、s), shall be met with data representing 3 sigma values. 3.4 MOLDED TEST SPECIMEN 3.4.1 Preparation of Test Specimens All test specimens shall be prepared from cross-ply molded plaques or equivalent. The plaques are to be manufactured from the same material and under equivalent conditions as producti
5、on parts. The plaques shall have the following dimensions: 300 x 300 mm, minimum x 2.5 +/- 0.2 mm Prepared specimens must show no evidence of fiber tear or loose fiber strands protruding from the specimens. No additional annealing of specimens is allowed. 3.4.2 Density 1.72 - 1.82 g/cm3(ISO 1183, Me
6、thod A) 3.4.3 Filler Content 3.4.3.1 Ash Content 65 - 71% (ISO 3451/1, Method A, 1 h at 650 +/- 25 C) 3.4.3.2 Glass Fiber Content, By Weight 27 - 33% Test Method: ISO 3451/1, Method B, 1 h at 650 +/- 25 C, except use 5% by volume hydrochloric acid solution for 15 minutes. Rinse the glass fibers seve
7、ral times with distilled water before drying in an oven for 2 h at 120 +/- 2 C. After cooling, weigh the crucibles and calculate the percent glass fibers. ENGINEERING MATERIAL SPECIFICATIONWSS-M3D170-A2Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 2 of 4 3.4.3.3
8、Glass Fiber Length, min 22 mm (Optical evaluation method) (s) 3.4.4 Tensile Strength at Break, min 25 MPa (ISO R 527, 150 minimum x 10 x 2.5 +/- 0.2 mm specimen, 5 mm/min test speed) (s) 3.4.5 Flexural Modulus, min 6.4 GPa (ISO 178, 60 x 10 x 2.5 +/- 0.2 mm specimen, 40 mm support span, 2 mm/min tes
9、t speed) (s) 3.4.6 Flexural Strength, min 100 MPa (ISO 178, 60 x 10 x 2.5 +/- 0.2 mm specimen, 40 mm support span, 2 mm/minute test speed) 3.4.7 Shear Modulus at 23 C 3.25 - 5.75 GPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen approx. 60
10、x 10 x 2.5 +/- 0.2 mm cut from the center of specimen A. Specimen length between clamps 35-40 mm. Soak time at each temperature interval - 3 minutes minimum) Additionally, a Shear Modulus versus Temperature curve shall be plotted for -50 to +280 C temperature range, at 5 C minimum intervals. The plo
11、tted curve must be within tolerance range shown on page 6. (s) 3.4.8 Impact Strength, Izod, min (ISO 180, Method A, 63.5 x 12.7 x 2.5 +/- 0.2 mm specimen, 10 specimens minimum) 3.4.8.1 At 23 +/- 2 C 28 kJ/m23.4.8.2 At -40 +/- 1 C 40 kJ/m2The test specimens must be conditioned for minimum of 6 h at t
12、he above specified temperature prior to impact test. Low temperature testing shall be done within the cold box. (s) 3.4.9 Heat Deflection Temperature, min 200 C (ISO 75, 120 x 10 x 2.5 +/- 0.2 mm specimen, 0.32 +/- 0.01 mm deflection. At 1.80 MPa) ENGINEERING MATERIAL SPECIFICATIONWSS-M3D170-A2Print
13、ed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 3 of 4 (s) 3.4.10 Water Absorption, max 0.5% (ISO 62, 24 h50 x 50 x 2.5 +/- 0.2 mm specimen) 3.4.11 Heat Aging Performance (ISO 188, 150 +/- 50 air changes/h, 1000 h at 150 +/- 2 C. Unaged property values shall be determin
14、ed at the time of the aged properties determination) 3.4.11.1 Tensile Strength at Max Load Change +/- 25% (Test Method per para 3.4.4) 3.4.11.2 Flexural Strength Change +/- 25% (Test Method per para 3.4.6) 3.4.11.3 Impact Strength, Izod Change +/- 25% (Test Method per para 3.4.8.1, specimens to be n
15、otched before heat aging) 3.5 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 2.5 +/- 0.2 mm with a smooth surface. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requ
16、irements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 1.9-5/ C (ASTM D 696 C) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 300 x 300 x 2.5 +/- 0.2 mm compression molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 0.24% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 120 C 0.01% 5.3 RECYCLING CODE UP- (GF+M) 68 ENGINEERING MATERIAL SPECIFICATIONWSS-M3D170-A2Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 4 of 4
