1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 10 12 N-STATUS Replaced by WSS-M4D638-B; Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1993 04 05 Released NB00I10043054235 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 4 POLYPROPYLENE COPOL
2、YMER (PP), IMPACT MODIFIED WSB-M4D875-A MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a molding compound based on black polypropylene copolymer. 2. APPLICATION This specification was released originally for material used for fender liners and o
3、ther similar applications that require a high degree of flexibility and moderate impact resistance. 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、.1.1 All requirements of this specification, identified by symbol (s), shall be met with data representing 3 sigma values. 3.4 MOLDING COMPOUND (s) 3.4.1 Melt Flow Rate 8.0 - 12.0 g/10 minutes (ISO 1133, 230 C, 2.16 kg) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise sp
5、ecified 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 center portion of the test spe
6、cimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 0.90 - 0.92 g/cm (ISO 1183, Method A) ENGINEERING MATERIAL SPECIFICATION WSB-M4D875-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 4 (s) 3.5.3 Tensil
7、e Strength at Yield, min 20.0 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) (s) 3.5.3.1 Elongation at Yield, min 8.0% (Test Method according to para 3.5.3) (s) 3.5.4 Flexural Modulus 750 - 930 MPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 6
8、4 mm support span) 3.5.5 Shear Modulus at 23 C 360 - 520 MPa (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 temper
9、ature interval - 3 minutes minimum) Additionally, a Shear Modulus versus Temperature curve shall be plotted for -50 to +150 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 4. (s) 3.5.6 Impact Strength, Izod, min (ISO 180/1A, 80 x 10 x 4.0
10、 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 7.5 kJ/m 3.5.6.2 At -40 +/- 1 C 5.0 kJ/m The 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. (s) 3.5.7 Hea
11、t Deflection Temperature, min 46 C (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, 0.32 +/- 0.01 mm deflection. At 1.82 MPa) 3.5.8 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 90 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determ
12、ination) ENGINEERING MATERIAL SPECIFICATION WSB-M4D875-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 4 3.5.8.1 Tensile Strength Change +/- 25% (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod Change, max -25% (Test Method per para 3.5.6.1, specim
13、ens to be notched before heat aging) 3.6 FOGGING (FLTM BO 116-03, 3 h at 100 C) Fog Number, min 90 Formation of clear film or droplets 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 2.0 +/- 0.1 mm with
14、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 LINEAR THERMAL EXPANSION 7-12-5/ C (ASTM E 228 or TMA, temperature range -30 to +30 C) 5.2 MOLD SHRINKAGE (ISO 2577,
15、 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 1.4 - 1.6% 5.3 HARDNESS, DUROMETER D TBD (ISO 868, 15 s dwell) 5.4 HEAT DEFLECTION TEMPERATURE 69 C (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen. At 0.45 MPa) 5.5 RECYCLING CODE PP ENGINEERING MATERIAL SPECIFICATION WSB-M4D875-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 4
