1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2005 12 13 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1992 08 03 Released EP00E10176303000 P. Kuntze Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 1 of 5 POLYETHYLENE TEREPHTHALATE (PET), 30%
2、 GLASS WSK-M4D726-A1 FIBER REINFORCED MOLDING COMPOUND 1. SCOPE The material defined by this specification is a 30% glass fiber reinforced thermoplastic molding compound based on polyethylene terephthalate (PET). 2. APPLICATION This specification was released originally for material used for non-vis
3、ible body parts. 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). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 2.0 - 20 g/ (ISO 1133/ASTM D 1238, 280 C,
4、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% (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 Sp
5、ecimens 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 dimensions shall be cut from the cen
6、ter 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 1.52 - 1.60 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D726-A1 Printed copies are uncontrolled Copyright 2005, Ford Glob
7、al Technologies, LLC Page 2 of 5 3.5.3 Tensile Strength at Max Load, min 134 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/min test speed) 3.5.4 Flexural Modulus, min 8.1 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test spee
8、d, 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 (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 c
9、enter 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 +250 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance ra
10、nge 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 7.8 kJ/m23.5.6.2 At -40 +/- 2 C 7.6 kJ/m2The test specimens must be conditioned for minimum of 6 h at the above specifie
11、d 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 212 C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen, at standard deflection of 0.32 +/- 0.01
12、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 properties determination) 3.5.8.1 Tensile Strength Change -25% (Test Method per para 3.5.3) 3.5.8.2 Impact Strength,
13、Izod Change, max -20% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D726-A1 Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 3 of 5 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The speci
14、men 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 90 Formation of excessive amounts of clear film or droplets is cause for rejection. 5. GENERAL INFORMATION The information given below is provided for clarificati
15、on and assistance in meeting the requirements of this specification. 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 . Af
16、ter 48 h at 23 +/- 2 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 1.5 - 16 cm3/ (ISO 1133/ASTM D 1238, 280 C, 5 kg) 10 minutes The m
17、aterial shall be dried for min of 4 h at 130 - 135 C in a mechanical convection oven immediately preceding the test. ENGINEERING MATERIAL SPECIFICATIONWSK-M4D726-A1 Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 4 of 5 5.4 HEAT DEFLECTION TEMPERATURE, min 240 C (I
18、SO 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 180 - 270 Pa.s (ASTM D-3835, at 280 C cappilary diameter d = 1 mm, L/d = 30, shear rate 1000 s-1) 5.7 RECYCLING CODE SAE or PET-GF30 OPTIONAL PET-GF30 ENGINEERING MATERIAL SPECIFICATIONWSK-M4D726-A1 Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 5 of 5
