1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2011 03 01 No replacement named A. Pan, APA N Status 2005 12 12 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.9, 3.10 & 4 1992 07 01 Released EP00E10176272000 P. Kuntze Printed copies are uncontrolled Copyright 2011, Ford Global Technologies,
2、 LLC Page 1 of 5 POLYETHYLENE TEREPHTHALATE (PET), 30% GLASS WSK-M4D726-A2 FIBER REINFORCED MOLDING COMPOUND, INTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 30% glass fiber reinforced thermoplastic molding compound based on polyethylene terephthalate
3、(PET). 2. APPLICATION This specification was released originally for material used for the interior handle assembly door window regulator. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For P
4、roduction Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 10 - 20 g/ (ISO 1133/ASTM D 1238, 280 C, 2.16 kg) 10 minutes The material shall be dried for 4 h minimum at 130 - 135 C in a mechanical convection oven immediately preceding the test. 3.4.2 Glass Fiber Content 28 - 32% (
5、ISO 3451/2 test temperature 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 on injection molded one-end gated test specimens. The following dimensions are required: A. 150 min x 10 x 4.0 +/
6、- 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. ENGINEERING MATERIAL SPECIFICATIONWSK-M4D726-A2 Copyright
7、2011, Ford Global Technologies, LLC Page 2 of 5 Printed copies are uncontrolled interval - 3 minutes minimum). 3.5.2 Density 1.50 - 1.60 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, min 125 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 5 m
8、m/min test speed) 3.5.4 Flexural Modulus, min 8.7 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 64 mm support span, the radius of the loading nose 5.0 +/- 0.1 mm and of the supports 2.0 +/- 0.2 mm) 3.5.5 Shear Modulus at 23 C 1.5 - 2.1 GPa (
9、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 Additionally, a Shear Modulus vs. Temperature curve shal
10、l be plotted for -50 to +250 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 5. 3.5.6 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C
11、 7 kJ/m23.5.6.2 At -40 +/- 2 C 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, if not possible, test can be conducted outside, but within 5 s. 3.5.7 Heat Deflection Temp
12、erature, min 215 C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen, at standard deflection of 0.32 +/- 0.01 mm. At 1.80 MPa) 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 150 +/- 2 C. Unaged property values shall be determined at the time of the aged pr
13、operties determination) 3.5.8.1 Tensile Strength Change -25% (Test Method per para 3.5.3) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D726-A2 Copyright 2011, Ford Global Technologies, LLC Page 3 of 5 Printed copies are uncontrolled 3.5.8.2 Impact Strength, Izod Change, max -20% (Test Method per para 3.5
14、.6.1, specimens to be notched before heat aging) 3.6 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. 3.7 FOGGING (FLTM BO 116-03) Fog Number, min 92 Formation of excessive amounts of clear film
15、 or droplets is cause for rejection. 3.8 WEATHERING RESISTANCE After exposure in accordance with 3.8.1 and 3.8.2 the material shall show no fading or color change in excess of specified Gray Scale rating (AATCC Evaluation Procedure 1/ISO 105-A02). In addition, there shall be no cracking, crazing or
16、other deterioration. A slight loss of gloss or chalking will be allowed provided an acceptable appearance can be achieved by washing with mild detergents and water (ratio 5:95 by volume), or equivalent, after the Florida exposure. All initial approvals will be based on the preliminary Weatherometer
17、exposure, pending Florida exposure results for final approval. 3.8.1 Xenon Arc Weatherometer Rating 4 (SAE J1885, 300 kJ/m2exposure minimum, specimen size: 150 x 100 mm minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.8.2 12 months Florida Rating 4 (FLTM BI 160-01, 5 south, under gla
18、ss, specimen size: 150 x 100 mm, minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. ENGINEERING MATERIAL SPECIFICATIONWSK-M4D726-A2 Copyright
19、 2011, Ford Global Technologies, LLC Page 4 of 5 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION (ASTM D 696) Flow Direction 1 2-5/ C Transverse to Flow 10 13-5/ C 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
20、 C Flow Direction 0.2 - 0.4% Transverse to Flow 1.0 - 1.2% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.01 - 0.1% . After 30 min at 120 C 0.02 - 0.1% 5.3 MELT VOLUME RATE 8 - 16 cm3/10 minutes (ISO 1133/ASTM D 1238, 280 C, 2.16 kg) The material shall be dri
21、ed for min of 4 h at 130 - 135 C in a mechanical convection oven immediately preceding the test. 5.4 HEAT DEFLECTION TEMPERATURE, min 240 C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen. At 0.45 MPa) 5.5 MELT TEMPERATURE 247 - 257 C (ISO 1218, Method B/ASTM D 789) 5.6 Melt Viscosity 150 - 2
22、50 Pa.s (ASTM D 3835, at 280 C cappilary diameter d = 1 mm, L/d = 30, shear rate 1000 s-1) The material shall be dried for min 4 h at 130 - 135 C in a mechanical convection oven immediately preceding the test. 5.7 RECYCLING CODE SAE or PET-GF30 PET-GF30 OPTIONAL Printed copies are uncontrolled ENGINEERING MATERIAL SPECIFICATIONWSK-M4D726-A2 Copyright 2011, Ford Global Technologies, LLC Page 5 of 5 Printed copies are uncontrolled
