1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 08 N-STATUS No replacement named J. Crist, NA 2005 09 16 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8 & 4 1990 07 11 Released DE00E00107002060 J.B. Hueber Printed copies are uncontrolled Copyright 2010, Ford Global Technologie
2、s, LLC Page 1 of 4 POLYETHYLENE TEREPHTHALATE (PET) MOLDING WSF-M4D629-A COMPOUND, 15% GLASS FIBER REINFORCED NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a thermoplastic polyester molding compound based on polyethylene terephthalate (PET) reinforced with 15%
3、glass fibers. 2. APPLICATION This specification was released originally for material used for seat belt alarm. 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-M99
4、P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Glass Fiber Content 13.0 - 17.0% (ISO 3451/2, at 750 +/- 50 C) 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 are re
5、quired: 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 1.36 - 1.42
6、g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Break, min 70 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/min test speed) ENGINEERING MATERIAL SPECIFICATIONWSF-M4D629-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LL
7、C Page 2 of 4 3.5.4 Flexural Modulus, min 3.1 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.5.5 Shear Modulus at 23 C 550 - 670 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen ap
8、prox. 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 +210 C temperature range, at 5 C minimum intervals.
9、 The plotted curve must be within tolerance range shown on page 4. 3.5.6 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 63.5 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 9.4 kJ/m23.5.6.2 At -40 +/- 2 C 3.1 kJ/m23.5.6.3 At -30 +/- 2 C 4.7 kJ/m
10、2The 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, if not possible, test can be conducted outside, but within 5 s. 3.5.7 Heat Deflection Temperature, min 178 C (ISO 75/ASTM D 6
11、48, 120 x 10 x 4.0 +/- 0.2 mm specimen, at 1.80 MPa) 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 160 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.8.1 Tensile Strength Change +/- 20% (Test Method pe
12、r para 3.5.3) 3.5.8.2 Impact Strength, Izod Change +/- 25% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) ENGINEERING MATERIAL SPECIFICATIONWSF-M4D629-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 4 3.6 FLAMMABILITY (ISO 3795) Bu
13、rn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.4 +/- 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 LINEA
14、R THERMAL EXPANSION 1.5-5/ C (ASTM D 696) 5.2 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 Flow Direction 0.3% Transverse to Flow 1.0% 5.2.2 Post Shrinkage (Separate specimens required for each test) . Afte
15、r 48 h at 80 C 0.1% . After 30 min at 120 C 0.1% 5.3 HEAT DEFLECTION TEMPERATURE 235 C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen, at 0.45 MPa) 5.4 MELT TEMPERATURE 245 C (ISO 1218, Method B/ASTM D 789) 5.5 RECYCLING CODE PET-GF15 ENGINEERING MATERIAL SPECIFICATIONWSF-M4D629-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4
