1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 07 18 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1994 11 07 Released NB00I10043054384 M. Trapp Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 4 POLYBUTYLENE TEREPHTHALATE + POLYETHYL
2、ENE WSB-M4D921-A TEREPHTHALATE BLEND (PBT + PET), 30% GLASS/MINERAL REINFORCED MOLDING COMPOUND 1. SCOPE The material defined by this specification is a 30% glass/mineral filled thermoplastic molding compound based on a blend of polybutylene terephthalate and polyethylene terephthalate. 2. APPLICATI
3、ON This specification was released originally for material used for a 28-way ECS header sleeve. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1.1
4、 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 Glass Fiber Content 28 - 32% (ISO 3451/1, Method A) (s) 3.4.2 Melt Temperature, min 215 C (ISO 3146, Method C, 10 C/min heating rate) 3.5 MOLDED TEST S
5、PECIMEN 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 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 Specimens with shorter
6、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 1.50 - 1.60 g/cm (ISO 1183, Method A) ENGINEERING MATERIAL SPECIFICATIONWSB-M4D921-APrinted copies are uncontrolled Copyright 200
7、6, Ford Global Technologies, LLC Page 2 of 4 (s) 3.5.3 Tensile Strength at Max Load, min 95 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/min) (s) 3.5.4 Flexural Modulus, min 7.5 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
8、Modulus at 23 C 1.70 - 2.90 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 mi
9、nimum) Additionally, a Shear Modulus versus Temperature curve shall be plotted for -50 to +200 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 spec
10、imens for each test) 3.5.6.1 At 23 +/- 2 C 4.2 kJ/m 3.5.6.2 At -40 +/- 1 C 4.2 kJ/m The 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 Deflection Temperature, min
11、 (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, edgewise, 0.32 +/- 0.01 mm deflection) 3.5.7.1 At 1.80 MPa 190 C 3.5.7.2 At 0.45 MPa 215 C All specimens dry as molded. If not tested immediately after molding, specimens must be stored in a sealed, moisture-proof container filled with silica gel. 3.5.8
12、Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 140 +/- 2 C. After heat aging test specimens are to be conditioned in a desicator for 3 - 5 hours at 23 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) ENGINEERING MATERI
13、AL SPECIFICATIONWSB-M4D921-APrinted copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 4 3.5.8.1 Tensile Strength at max load percent 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 n
14、otched before heat aging) 3.6 FOGGING (FLTM BO 116-03, 3 hours at 100 C heating, 21 C cooling plate) Fog Number, min 90 Formation of clear film, crystals 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 3
15、55 x 100 x 1.0 +/- 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 2.64-5/ C (ASTM E 831 TMA, temperature range -30 - +30 C) 5.
16、2 MOLD 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 0.2 - 0.5% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.13% . After 30 minutes at 120 C 0.10% 5.3 RECYCLING CODE PBT+PET-(GF+M) 30 ENGINEERING MATERIAL SPECIFICATIONWSB-M4D921-APrinted copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 4
