1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 10 16 N-STATUS Replaced by WSS-M4D638-B; Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9, 4 R. Lord 2000 11 03 Revised Updated A. Cockman 1989 04 06 Released CSS1-RD235782 L. A. Graham, GAM, MF Printed copies are uncontrolled Copyright 200
2、6, Ford Global Technologies, LLC Page 1 of 5 POLYPROPYLENE (PP) MOLDING COMPOUND, COLOR PIGMENTED, WSB-M4D638-A LOW GLOSS, UV STABILIZED, INTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a molded-in-color low gloss, polypropylene copolymer that is UV stab
3、ilized for unpainted interior applications. 2. APPLICATION This specification was released originally for material used for an interior quarter trim panel. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.0 STANDARD REQUIREMENTS FOR PRODUCT
4、ION 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 30 - 40 g/10 minutes (ISO 1133/ASTM D 1238, 230 C, 2.16 kg) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test S
5、pecimens 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 ce
6、nter portion of the test specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. ENGINEERING MATERIAL SPECIFICATION WSB-M4D638-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 5 3.5.2 Density 0.89 - 0.92 g/cm3 (ISO 118
7、3, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, min 23 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) 3.5.3.1 Elongation at Yield, min 5% (Test Method according to para 3.5.3) 3.5.4 Flexural Modulus, min 970 MPa (ISO 178/ASTM D 790M,
8、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 400 - 675 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. Additi
9、onally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +130 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 5. 3.5.6 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 63.5 x 10 x 4.0 +/-0.2 mm specimen
10、, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 4.2 kJ/m2 3.5.6.2 At - 40 +/- 2 C 2.7 kJ/m2 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, if not possible, test can be c
11、onducted 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 specimen) 3.5.7.1 At 1.82 MPa 49 C 3.5.7.2 At 0.45 MPa 95 C ENGINEERING MATERIAL SPECIFICATION WSB-M4D638-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies,
12、 LLC Page 3 of 5 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 1000 h at 130 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.8.1 Tensile Strength Change +/- 15% (Test Method per para 3.5.3) 3.5.8.3 Impact Strength, Izod Change, max - 15%
13、(Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 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 a smooth surface. 3.7 WEATHERING RESISTANCE After exposure in accordance with 3.7.1 a
14、nd 3.7.2 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 chalking will be allowed provided an acceptabl
15、e appearance can be achieved by washing with mild detergents and water (ratio 5:95 by volume) after the Florida exposure. 3.7.1 Xenon Arc Weatherometer Rating 4 - 5 (SAE J1885, 1240 kJ/m2 exposure minimum, specimen size: 150 x 100 mm minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.7
16、.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) ENGINEERING MATERIAL SPECIFICATION WSB-M4D638-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of
17、 5 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 9.5-5/C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded spe
18、cimen) 5.2.1 Molding Shrinkage After 48 h at 23 +/- 2 C 1.6% 5.3 HARDNESS, DUROMETER D 62 (ISO 868/ASTM D 2240, 15 s dwell) 5.4 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Number, min 60 Formation of clear film, droplets or crystals is cause for rejection. ENGINEERING MATERIAL SPECIFICATION WSB-M4D638-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 5
