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, 3.8, 3.9 & 4 1990 12 03 Released EP00E01031542000 P. Kuntze Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Pa
2、ge 1 of 5 POLYBUTYLENE TEREPHTHALATE + POLYCARBONATE WSK-M4D790-A BLEND (PBT+PC), 30% GLASS FIBER REINFORCED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 30% glass fiber reinforced blend of polybutylene terephthalate and polycarbonate (PBT+P
3、C), with reduced warpage characteristics. 2. APPLICATION This specification was released originally for material used for grill opening retainer. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirement
4、s 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 7.5 - 14 g/10 minutes The material shall be dried
5、 for min of 2 h at 125 C in a mechanical convection oven immediately preceding the test. 3.4.2 Glass Fiber Content 28 - 32% (ISO 3451/2, at 750 +/- 25 C, test portion 2.5 - 3.0 g) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out o
6、n 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-M4D790-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC P
7、age 2 of 5 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 1.47 - 1.53 g/cm3(ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Max Load, min 95 MPa (ISO R
8、 527, 150 x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/minute test speed) (s) 3.5.4 Flexural Modulus, min 5.8 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 1.40 - 2.0 GPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz
9、+/- 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 Shear Modulus vs. Temperature curve shall be plotted for -50 to +225 C
10、temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 5. (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 4.4 kJ/m23.5.6.2 At -40 +/- 2 C 3.4 kJ/m2The test spec
11、imens 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 Deflection Temperature, min 145 C (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, edgewise, 0.32 +/- 0.01 mm deflection. At 1.8
12、0 MPa) 3.5.8 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 150 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D790-A Printed copies are uncontrolled Copyright 2010, Ford Globa
13、l Technologies, LLC Page 3 of 5 3.5.8.1 Tensile Strength at Max Load Change +/- 30% (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod Change +/- 35% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 FOGGING (FLTM BO 116-03, 3 h at 100 C heating, 21 C cooling plat
14、e) Fog Number, min 95 Formation of clear film, droplets or crystals 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 with a smooth surface. 5. GENERAL INFORMATION The information given belo
15、w is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 2.4 - 11.3-5/C (ASTM E 831 TMA, temperature range -20 to +120 C) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 5
16、.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C Flow Direction 0.3 - 0.5% Transverse to Flow 0.4 - 0.6% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.1% . After 30 min at 120 C 0.1% ENGINEERING MATERIAL SPECIFICATIONWSK-M4D790-A Printed copies are uncontro
17、lled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 5.3 MELT VOLUME RATE (ISO 1133, 250 C) 5.3.1 At 2.16 kg 6 - 12 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 205 C
18、(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 MELT TEMPERATURE, min 217 C(ISO 3146, Method C, 10 C/min heating rate) 5.6 RECYCLING CODE PBT+PC-GF30 ENGINEERING MATERIAL SPECIFICATIONWSK-M4D790-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5
