1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 07 14 N-STATUS No replacement A. Pan, APA 2006 02 24 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.6 (Additonal Requirements), 3.10 Corrected numbering 3.5 1993 11 02 Released EP00E10258829000 L. Rodigas Printed copies are uncontrolled C
2、opyright 2010, Ford Global Technologies, LLC Page 1 of 4 POLYBUTYLENE TEREPHTHALATE + POLYCARBONATE WSK-M4D789-A2 BLEND (PBT+PC), 10% GLASS FIBER REINFORCED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 10% glass fiber reinforced blend of pol
3、ybutylene terephthalate and polycarbonate (PBT+PC), with reduced warpage characteristics. 2. APPLICATION This specification was released originally for material used for electrical connectors. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers mu
4、st conform to the Companys 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 (ISO 1133, 250 C) 3.4.1.1 At 2.16 kg 18
5、 - 27 g/10 minutes 3.4.1.2 At 5.0 kg, min 60 g/10 minutes The material shall be dried for min of 2 h at 125 C in a mechanical convection oven immediately preceding the test. 3.4.2 Glass Fiber Content 8 - 12% (ISO 3451/2, at 750 +/- 25 C, test portion 2.5 - 3.0 g) 3.5 MOLDED TEST SPECIMEN 3.5.1 Prepa
6、ration of Test Specimens Unless otherwise specified all tests shall be carried out on injection molded one-end gated test specimens. The following dimensions are 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 ENGINEERING MATERIAL SPECIFICATIONWSK-M4D7
7、89-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 4 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 1.27 - 1.3
8、4 g/cm3(ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Max Load, min 75 MPa (ISO R 527, 150 x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/minute test speed) (s) 3.5.4 Flexural Modulus, min 3.2 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
9、23 C 0.95 - 1.60 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). Add
10、itionally, a Shear Modulus versus Temperature curve shall be plotted for -50 to +210 C temperature range, at 5 C minimum intervals. The plotted curve must be within 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
11、each test) 3.5.6.1 At 23 +/- 2 C 4.5 kJ/m23.5.6.2 At -40 +/- 2 C 3.0 kJ/m23.5.6.3 At -10 +/- 2 C 8 kJ/m2The test specimens must be 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. (s) 3.5.7 Heat Deflect
12、ion Temperature, min 95 C (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, 0.32 +/- 0.01 mm deflection. At 1.80 MPa) 3.5.8 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 130 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination)
13、 3.5.8.1 Tensile Strength at Max Load Change +/- 20% (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod Change +/- 20% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D789-A2 Printed copies are uncontrolled Copyright 2010, For
14、d Global Technologies, LLC Page 3 of 4 3.6 FOGGING (FLTM BO 116-03, 3 h at 100 C) Fog Number, min 90 Formation of clear film or droplets is cause for rejection. 3.7 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm wit
15、h 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 5-5/C (ASTM E 228 or TMA, temperature range -20 to +100 C) 5.2 MOLD SHRINKAGE (ISO 2577,
16、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 0.2 - 0.8% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.05% . After 30 minutes at 120 C 0.1% 5.3 MELT VOLUME RATE (ISO 1133, 250 C) 5.3.1 At 2.1
17、6 kg 16 - 23 cm3/10 minutes 5.3.2 At 5.0 kg, min 50 cm3/10 minutes The material shall be dried for min of 2 h at 125 C in a mechanical convection oven immediately preceding the test. 5.4 HEAT DEFLECTION TEMPERATURE, min 140 C (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, 0.32 +/- 0.01 mm deflection. At 0.45 MPa) 5.5 MELT TEMPERATURE, min 217 C (ISO 3146, Method C, 10 C/min heating rate) 5.6 RECYCLING CODE PBT+PC-GF10 ENGINEERING MATERIAL SPECIFICATIONWSK-M4D789-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4
