1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 11 16 N-STATUS No replacement named A. Pan, APA 2006 07 20 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1995 08 07 Activated M. Dumitrescu Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1 o
2、f 4 POLYETHYLENE TEREPHTHALATE (PET), 13% GLASS FIBER/MICA WSS-M4D937-A1 REINFORCED MOLDING COMPOUND, 100% RECYCLED POLYMER NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 13% glass fiber/mica reinforced thermoplastic molding compound based on 100% recycled pol
3、yethylene terephthalate from post consumer sources. 2. APPLICATION This specification was released originally for material used for accelerator controls splash shields. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Compan
4、ys Standard Requirements 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 MOLDING COMPOUND (s) 3.4.1 Melt Flow Rate, max 15 g/10 minutes (ISO 1133, 280 C, 2.16 kg) (s) 3.4.2 Fill
5、er Content 11 - 15% (ISO 3451/2, 1 h at 750 +/- 50 C, test portion 2.5 - 3.0 g, glass fiber/mica filler) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on injection molded one-end gated test specimens. The following dimensions a
6、re required: A. 150 min x 10 x 4.0 +/- 0.2 mm (Tensile Bar, ISO 3167) B. 120 x 10 x 4.0 +/- 0.2 mm Specimens with shorter dimensions shall be cut from the center portion of the test specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.38 -
7、1.42 g/cm (ISO 1183, Method A) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D937-A1Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 4 (s) 3.5.3 Tensile Strength at Max Load, min 75 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/min test speed) (s)
8、3.5.4 Flexural Modulus, min 2.5 GPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 64 mm support span) 3.5.5 Shear Modulus at 23 C 1.2 - 1.9 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
9、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 +240 C temperature range, at 5 C minimum intervals. The plotted curve must be wit
10、hin tolerance range shown on page 4. (s) 3.5.6 Impact Strength, Izod, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 2.5 kJ/m 3.5.6.2 At -40 +/- 2 C 1.5 kJ/m The test specimens must be conditioned for minimum of 6 h at the above specified temper
11、ature prior to impact test. Low temperature testing shall be done within the cold box. (s) 3.5.7 Heat Deflection Temperature, min 125 C (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, edgewise, 0.32 +/- 0.01 mm deflection. At 1.80 MPa) 3.5.8 Heat Aging Performance (ISO 188, except 150 +/- 50 air change
12、s/h, 1000 h at 150 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.8.1 Tensile Strength at Max Load Change +/- 25% (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod Change +/- 25% (Test Method per para 3.5.6.1, specimens to be notche
13、d before heat aging) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D937-A1Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 4 3.6 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1
14、mm with a smooth surface. 3.7 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h) Fog Number, min 97 Formation of clear film, droplets or crystals is cause for rejection. 3.8.1 Regrind 20% maximum of regrind produced from molded parts is acceptable, providing al
15、l requirements of this specification are met. 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 5.8-5/ C (ASTM E 831 TMA, temperature range -30 to +30 C) 5.2 M
16、OLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 0.50% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.09% . After 30 min at 120 C 0.15% 5.3 MELT TEMPERATURE 246 C (ISO 31
17、46, Method C, 10 C/min heating rate) 5.4 HEAT DEFLECTION TEMPERATURE 209 C (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, edgewise, 0.32 +/- 0.01 mm deflection. At 0.45 MPa) 5.5 RECYCLING CODE PET-(GF+P)13 ENGINEERING MATERIAL SPECIFICATIONWSS-M4D937-A1Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4
