1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2005 04 08 Revised Title, paras 1, 3.4.3.1, 3.4.4, 3.4.5, 3.4.8.2, 3.4.10. 3.4.11.3, 5.1, 5.4, 5.6 G. D. Gullen 2004 12 21 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.6, 3.7 & 4 1994 10 26 Released NC00E10244447042 K.D. Bruley Printed copie
2、s are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 1 of 5 VINYL ESTER (VE), MODIFIED, 35% GLASS FIBER WSA-M3D173-A3 REINFORCED SHEET MOLDING COMPOUND 1. SCOPE The material defined by this specification is a 25 mm minimum long glass fiber reinforced unsaturated, modified vinyl este
3、r sheet molding compound (SMC). 2. APPLICATION This specification was released originally for materials used for a fuel tank protective heat shield. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirem
4、ents For Production Materials (WSS-M99P1111-A). 3.1.1 All requirements of this 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
5、or equivalent. The plaques are to be manufactured from the same material and 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 protrudi
6、ng from the specimens. No additional annealing of specimens is allowed. 3.4.2 Density 1.75 - 2.05 g/cm3(ISO 1183, Method A) (s) 3.4.3 Filler Content 3.4.3.1 Ash Content, max 79% (ISO 3451/1, Method A, 1 h at 650 +/- 25 C) ENGINEERING MATERIAL SPECIFICATIONWSA-M3D173-A3 Printed copies are uncontrolle
7、d Copyright 2005, Ford Global Technologies, LLC Page 2 of 5 3.4.3.2 Glass Fiber Content, 35% By Weight, min 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 several times with distilled water before dryi
8、ng in an oven for 2 h at 120 +/- 2 C. After cooling, weigh the crucibles and calculate the percent glass fibers. 3.4.3.3 Glass Fiber Length, min 25 mm (Optical evaluation method) (s) 3.4.4 Tensile Strength at Break, min 87 MPa (ISO R 527, 150 minimum x 25 x 2.5 +/- 0.2 mm specimen, 5 mm/min test spe
9、ed) (s) 3.4.5 Flexural Modulus, min 11.0 GPa (ISO 178, 60 x 10 x 2.5 +/- 0.2 mm specimen, 40 mm support span, 2 mm/minute test speed) (s) 3.4.6 Flexural Strength, min 207 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 4.95 - 7.
10、68 GPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen approx. 60 x 10 x 4.0 +/- 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 Sh
11、ear Modulus vs. Temperature curve shall be plotted for -50 to +260 C temperature range, 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 180/4A, 63.5 x 12.7 x 2.5 +/- 0.2 mm specimen, 10 specimens minimum) 3.4.8.1 A
12、t 23 +/- 2 C 64 kJ/m2ENGINEERING MATERIAL SPECIFICATIONWSA-M3D173-A3 Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 3 of 5 3.4.8.2 At -40 +/- 2 C 90 kJ/m2The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact t
13、est. Low temperature testing shall be done within the cold box, if not possible, test can be conducted outside, but within 5 s. (s) 3.4.9 Heat Deflection Temperature, min 250 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 0.6
14、0% (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 180 +/- 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, max -25% (Tes
15、t Method per para 3.4.4) 3.4.11.2 Flexural Strength Change, max -25% (Test Method per para 3.4.6) 3.4.11.3 Impact Strength, Izod Change, max -25% (Test Method per para 3.4.8.1, specimens to be notched before heat aging) 3.5 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute Self-Extinguishing (SE)
16、 The specimen size required for material approval is 355 x 100 x 2.5 +/- 0.1 mm with a smooth surface. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 1.8 -
17、2.2-5/C (ASTM E 228 or TMA, temperature range -30 to +30 C) ENGINEERING MATERIAL SPECIFICATIONWSA-M3D173-A3 Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 4 of 5 5.2 MOLD SHRINKAGE 0.1% (ISO 2577, approx. 300 x 300 x 2.5 +/- 0.2 mm compression molded specimen, aft
18、er 48 h at room temperature) 5.3 HARDNESS, BARCOL 55 (ASTM D 2583) 5.4 COMPRESSIVE STRENGTH 165 MPa (ASTM D 695) 5.5 COLOR Black or as specified on Engineering Drawing 5.6 RECYCLING CODE VE- (GF+M) 80 ENGINEERING MATERIAL SPECIFICATIONWSA-M3D173-A3 Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 5 of 5
