1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 10 17 N-STATUS Replaced by WSS-M4D638-B 2006 03 21 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.9, 3.10 & 4 1991 06 07 Released NB00I100430541000 L.A. Graham Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC
2、 Page 1 of 4 POLYPROPYLENE (PP) COPOLYMER MOLDING COMPOUND, WSB-M4D812-A INTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a molding compound based on polypropylene copolymer. 2. APPLICATION This specification was released originally for material used for
3、interior mirror housings. 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 8 - 10 g/10 minutes (ISO 1133/AST
4、M D 1238, 230 C, 2.16 kg) 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 +/- 0.2 mm (Tensile Bar, ISO 3167) B. 120 x
5、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. 3.5.2 Density 0.88 - 0.92 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at
6、 Yield Load, min 20 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) ENGINEERING MATERIAL SPECIFICATION WSB-M4D812-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 4 3.5.3.1 Elongation at Yield, min 6% (Test Method acc
7、ording to para 3.5.3) 3.5.4 Flexural Modulus, min 0.8 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 339 - 509 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Spe
8、cimen 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 interval - 3 minutes minimum). Additionally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +150 C temperature range, at 5 C minimum int
9、ervals. The plotted curve must be within tolerance range shown on page 4. 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 6.6 kJ/m2 3.5.6.2 At -40 +/- 2 C 2.9 kJ/m2 The test specimens must
10、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 (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm s
11、pecimen) 3.5.7.1 At 1.82 MPa 44 C 3.5.7.2 At 0.45 MPa 69 C 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 120 +/- 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 Met
12、hod per para 3.5.3) ENGINEERING MATERIAL SPECIFICATION WSB-M4D812-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 4 3.5.8.2 Impact Strength, Izod Change, max -25% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 WEATHERING RESIST
13、ANCE After exposure in accordance with 3.6.1 and 3.6.2 the material shall show no fading or color change in excess of specified AATCC rating (AATCC Gray Scale for Evaluating Change in Color, 10 step). In addition, there shall be no cracking, crazing or other deterioration. A slight loss of gloss or
14、chalking will be allowed provided an acceptable appearance can be achieved by washing with mild detergents and water (ratio 5:95 by volume) after the Florida exposure. 3.6.1 Xenon Arc Weatherometer Rating 4-5 (SAE J1885, 1240 kJ/m2 exposure minimum, specimen size: 150 x 100 mm minimum, 3.2 +/- 0.2 m
15、m thick, molded in smooth polished mold) 3.6.2 12 Months Florida Rating 4-5 (FLTM BI 160-01, 5 south, under glass, specimen size: 150 x 100 mm minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.7 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute 3.8 FOGGING (FLTM BO 116-03) Fog Numb
16、er, min 75 Formation of excessive amounts of clear film or droplets is cause for rejection. 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 6 8-5/C (ASTM D 6
17、96) 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 1.2 - 1.5% 5.3 HARDNESS, DUROMETER D 70 (ISO 868/ASTM D 2240, 15 s dwell) ENGINEERING MATERIAL SPECIFICATION WSB-M4D812-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 4
