1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 08 N-STATUS No replacement named J. Crist, NA 2005 08 31 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8 & 4 1988 10 12 Released SM/EQ P. Kuntz Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1
2、of 4 POLYETHYLENE TEREPHTHALATE (PET) WSK-M4D617-A IMPACT MODIFIED, 35% GLASS FIBER REINFORCED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 35% glass fiber reinforced and impact modified thermoplastic polyester molding compound based on poly
3、ethylene terephthalate (PET). 2. APPLICATION This specification was released originally for material used for adapter fuel injection inlet. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Ma
4、terial suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Glass Fiber Content 34 - 38% (ISO 3451/2, at 750 +/- 50 C, test portion 2.5 - 3.0 g) 3.4.2 Melt Flow Rate (MFR) 5 - 11 g/10 min (ISO 1133/ASTM
5、D 1238, 280 +/- 0.5 C, 10 kg) The material shall be dried for 4 h minimum at 130 - 135 C in a mechanical convection oven immediately preceding the test. 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
6、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 center portion of the test specimen A and/or B. The specimens shall be prepared according to ISO
7、294. No annealing allowed. ENGINEERING MATERIAL SPECIFICATIONWSK-M4D617-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 4 3.5.2 Density 1.49 - 1.53 g/cm3(ISO R 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max. Load, min 100 MPa (ISO R 527/
8、ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/minute test speed) 3.5.4 Flexural Modulus, min 6.7 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 980 - 1330 MPa (Method B/ASTM D 4065, forced constant ampli
9、tude, 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.) Additionally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +240 C temperature range, at 5 C minimum intervals. The plotted curve must be wit
10、hin tolerance range shown on page 4. 3.5.6 Impact Strength, Izod (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, min 12.5 kJ/m23.5.6.2 At -40 +/- 1 C, min 7.5 kJ/m2 3.5.6.3 At -10 +/- 1 C, min 9.0 kJ/m2The test specimens
11、 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 210 C (ISO 75/ASTM D 648, 120 x 10 x 4.0
12、+/-0.2 mm specimen, at 1.82 MPa) 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 1000 h at 120 +/- 2 C) 3.5.8.1 Tensile Strength Change +/- 20% Test Method per para 3.5.3 3.5.8.2 Impact Strength, Izod Change +/- 20% (Test Method per para 3.5.6.1 at 23 C, specimens to be notched before heat ageing.
13、) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D617-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 4 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. 5.
14、 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 2.0-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specime
15、n) 5.2.1 Molding Shrinkage After 48 h at 23 +/- 2 C 0.15 - 0.25% 5.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C 0.05% After 30 min at 120 C 0.05% 5.3 MELTING POINT 250 C (ISO 1218, Method B/ASTM D 789) 5.4 MELT VOLUME RATE (MVR) 3.0 - 7.0 cm3/ (ISO 1133/ASTM D 12
16、38, except 280 +/- 0.5 C, 10 minutes 10 kg load, extrudate volume in cm3/10 minutes) The material shall be dried for 4 h minimum at 130 - 135 C in a mechanical convection oven immediately preceding the test. ENGINEERING MATERIAL SPECIFICATIONWSK-M4D617-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4
