1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2005 01 05 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.10 & 4 1995 09 15 Revised Revised para 3.4.5 M. Trapp1995 05 18 NB00I10043054425 M. TrappPrinted copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 1 of 5 U
2、NSATURATED POLYESTER (UP), 50% LONG GLASS WSS-M3D177-A1 FIBER REINFORCED MOLDING COMPOUND 1. SCOPE The material defined by this specification is 50 mm minimum long glass fiber reinforced unsaturated polyester (UP) sheet molding compound. 2. APPLICATION This specification was released originally for
3、material used for glove box door and steering column cover (knee bolster). 3. REQUIREMENTS 3.0 STANDARD REQUIRMENTS 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 t
4、his specification, identified by symbol (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 an
5、d under equivalent conditions as production 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.
6、2 Density 1.6 - 1.9 g/cm3(ISO 1183, Method A) (s) 3.4.3 Filler Content 3.4.3.1 Ash Content 50 - 76% (ISO 3451/1, Method A, 1 h at 650 +/- 25 C) ENGINEERING MATERIAL SPECIFICATIONWSS-M3D177-A1Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 2 of 5 3.4.3.2 Glass Fiber
7、 Content, by Weight 40 - 60% Test Method: ISO 3451/1, Method B, 1 h at 650 +/- 25 C, except use 5% by volume hydrochloric acid solution for 15 min. Rinse the glass fibers several times with distilled water before drying in an oven for 2 h at 120 +/- 2 C. After cooling, weigh the crucibles and calcul
8、ate the percent glass fibers. 3.4.3.3 Glass Fiber Length, min 50 mm (Optical evaluation method) (s) 3.4.4 Tensile Strength at Break, min 95 MPa (ISO 527, 150 minimum x 25 x 2.5 +/- 0.2 mm specimen, 5 mm/min test speed) (s) 3.4.5 Flexural Modulus, min 6.7 GPa (ISO 178, 60 x 10 x 2.5 +/- 0.2 mm specim
9、en, 40 mm support span, 2 mm/minute test speed) (s) 3.4.6 Flexural Strength, min 150 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 3.88 - 6.46 GPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, stra
10、in level below 1%. Specimen approx. 60 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 vs. Temperature curve shall be plotted for -50 to +290 C temperature rang
11、e, at 5 C minimum intervals. The plotted 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 95 kJ/m23.4.8.2 At -40 +/- 2 C 135 kJ/m2The test specimens must b
12、e conditioned for minimum of 6 h at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold box. ENGINEERING MATERIAL SPECIFICATIONWSS-M3D177-A1Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 3 of 5 (s) 3.4.9 Heat
13、 Deflection Temperature, min 300 C (ISO 75, 120 x 10 x 2.5 +/- +/- 0.2 mm specimen, 0.32 +/- 0.01 mm deflection. At 1.80 MPa) (s) 3.4.10 Water Absorption, max 2.15% (ISO 62, 24 h, 50 x 50 x 2.5 +/- 0.2 mm specimen) 3.4.11 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 34
14、5 +/- 2 C. Unaged property values shall be determined 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 +/- 2
15、5% (Test Method per para 3.4.8.1, specimens to be notched before heat aging) 3.5 FOGGING (FLTM BO 116-03, 3 h at 100 C heating, 21 C cooling plate) Fog Number, min 80 Formation of clear film, droplets or crystals is cause for rejection. Interpretation of results: The acceptability of any material mu
16、st be based on evaluation of all three glass plates. Questions on interpretation of results should be directed to the responsible Materials Engineering Activity. 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 2.5 +/- 0.1 mm wi
17、th a smooth surface. ENGINEERING MATERIAL SPECIFICATIONWSS-M3D177-A1Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 4 of 5 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specificat
18、ion. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 1.73-5/ C (ASTM D 696) 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 0.007% 5.2.2 Post Shrinkage . After 48 h at 120 C 0.023% 5.3 COMPRESSIVE STRENGTH 75 MPa (ASTM D 695) 5.4 RECYCLING CODE UP- (GF+M) 62 ENGINEERING MATERIAL SPECIFICATIONWSS-M3D177-A1Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 5 of 5
