1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 07 20 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1999 12 14 Revised Editorial No technical change APC 1996 03 01 Activated N. Kurtycz Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 4
2、 POLYPROPYLENE (PP) HOMOPOLYMER, 50% BARIUM WSS-M4D944-A1 SULFATE FILLED, 25% MINIMUM RECYCLED CONTENT MOLDING COMPOUND 1. SCOPE The material defined by this specification is a 50% Barium Sulfate (BaSu) filled, pigmented injection molding compound based on polypropylene homopolymer with 25% minimum
3、recycled resin content. 2. APPLICATION This specification was released originally for material used for air inlet duct housing. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production M
4、aterials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND (s) 3.4.1 Melt Flow Rate 7.0 - 12.0 g/10 minutes (ISO 1133, 230 C, 2.16 kg) 3.4.2 Mineral Content 47 - 53% (ISO 3451/1, Method A, BaSu filler, 30 minutes at 800 +/- 50 C, test portion 1 - 2 g) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimen
5、s 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 center po
6、rtion of the test specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.48 - 1.55 g/cm (ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Yield, min 18.6 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) ENGIN
7、EERING MATERIAL SPECIFICATIONWSS-M4D944-A1 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 4 (s) 3.5.4 Flexural Modulus, min 1.28 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
8、C 960 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 temperature interval - 3 minutes minimum) Additionally,
9、 a Shear Modulus versus Temperature curve shall be plotted for -50 to +140 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 +/- 0.2 mm specimen, 10 specimens for each test)
10、 3.5.6.1 At 23 +/- 2 C 1.5 kJ/m 3.5.6.2 At -40 +/- 2 C 0.8 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, if not possible, test can be conducted outside, but within 5 s
11、. (s) 3.5.7 Heat Deflection Temperature, min (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, edgewise, 0.32 +/- 0.1 mm deflection) 3.5.7.1 At 1.80 MPa 46 C 3.5.7.2 At 0.45 MPa 90 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
12、shall be determined at the time of the aged properties determination) 3.5.8.1 Tensile Strength at Yield +/- 15% Change (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod Change, -15% max (Test Method per para 3.5.6.1, specimens to be notched before heat aging) ENGINEERING MATERIAL SPECIFICAT
13、IONWSS-M4D944-A1 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 4 3.5.9 Odor 2.0 max (SAE J1351) 3.6 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h) Fog Number, min 70 Formation of clear film, droplets or crystals is
14、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 1.0 +/- 0.1 mm with a smooth surface. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requireme
15、nts of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 84-6/ C (ASTM E 831, 20 - 100 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 1.28% 5.2.2 Post Shrinkage (Separate specimens requir
16、ed for each test) . 06 After 48 h at 80 C 1.48% . After 30 minutes at 120 C 1.51% 5.3 ELONGATION AT BREAK, min 6% (Test Method according to para 3.5.3) 5.4 HARDNESS, DUROMETER D, min 70 (ISO 868/ASTM D 2240, 15 s dwell) 5.5 RECYCLING CODE ENGINEERING MATERIAL SPECIFICATIONWSS-M4D944-A1 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 4
