1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 19 N-STATUS No replacement named J. Crist, NA 2006 04 18 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.8, 3.9 Fixed numbering in 5.1 1994 09 01 Released EP00E10348605000 K. Gerhards Printed copies are uncontrolled Copyright 2010, Ford Glob
2、al Technologies, LLC Page 1 of 4 POLYPHTHALAMIDE (PPA), IMPACT MODIFIED, 34% GLASS FIBER WSK-M4D843-A2 REINFORCED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a glass fiber reinforced, impact modified polyphthalamide molding compound. 2. APPLI
3、CATION This specification was released originally for material used for fuel rails. 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 All require
4、ments of this specification, identified by symbol(s), shall be met with data representing 3 sigma values. 3.3 CONDITIONING AND TEST CONDITIONS All test values indicated herein are based on material and specimens with moisture content not exceeding 0.2% (test according to ISO 960, Method B). All test
5、 materials immediately after processing have to be sealed in containers that are impermeable to water vapor. If the moisture content exceeds 0.2%, condition the material for a minimum of 16 h at 40 - 50 C at a reduced pressure below 133 Pa. 3.4 MOLDING COMPOUND 3.4.1 Glass Fiber Content 32 - 36% (IS
6、O 3451/4, 600 +/- 25 C) (s) 3.4.2 Melt Temperature 305 - 313 C (ISO 3146, Method C, 10 C/min heating rate) 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. ENGINEERING MATERIAL SPE
7、CIFICATIONWSK-M4D843-A2Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 4 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
8、 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 1.42 - 1.48 g/cm (ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Break, min 175 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed, (s)
9、 3.5.4 Flexural Modulus, min 8.8 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 Modulus at 23 C 2.0 - 3.4 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
10、 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 versus Temperature curve shall be plotted for -50 to +240 C temperature range, at 5 C minimum intervals. The plotted curve must b
11、e 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 specimens for each test) 3.5.6.1 At 23 +/- 2 C 5.2 kJ/m 3.5.6.2 At -40 +/- 1 C 4.7 kJ/mThe test specimens must be conditioned for minimum of 6 h at the above specified te
12、mperature prior to impact test. Low temperature testing shall be done within the cold box. (s) 3.5.7 Heat Deflection Temperature, min 259 C (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, 0.32 +/- 0.01 mm deflection. At 1.80 MPa) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D843-A2Printed copies are uncontr
13、olled Copyright 2010, Ford Global Technologies, LLC Page 3 of 4 3.5.8 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 180 +/- 2 C. After heat aging test specimens are to be conditioned in a desiccator for 3 - 5 h at 23 +/- 2 C. Unaged property values shall be determined a
14、t the time of the aged properties determination) 3.5.8.1 Tensile Strength at Max Load 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 notched before heat aging) 3.6 FOGGING (FLTM BO 116-03) Fog Number, min 80 For
15、mation of a clear film, droplets or crystals is cause for rejection. 3.7 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x tbd +/- 0.1 mm with a smooth surface. 5. GENERAL INFORMATION The information given below is provided for clari
16、fication and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION (ASTM E 831 TMA) 5.1.1 From 0 to 100 C 2.1 - 6.6-5/ C 5.1.2 From 100 to 250 C 1.6 - 9.7-5/ 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 C 0.1 - 0.6% 5.3 RECYCLING CODE PPA-GF34 ENGINEERING MATERIAL SPECIFICATIONWSK-M4D843-A2Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4
