1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 4 2011 08 08 Revised See summary of Revisions L. Soreide, FNA 2006 07 26 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1997 12 12 Activated L. Hess Controlled document at www.MATS Copyright 2011, Ford Global Technologies, LLC
2、 Page 1 of 5 POLYPROPYLENE (PP), HOMOPOLYMER 20% CALCIUM WSS-M4D959-A CARBONATE FILLED, HEAT STABILIZED, IMPACT MODIFIED MOLDING COMPOUND, 25% MIN POST CONSUMER CONTENT 1. SCOPE The material defined by this specification is a 20% calcium carbonate filled thermoplastic molding compound based on polyp
3、ropylene homopolymer (25% min post consumer content). 2. APPLICATION This specification was released originally for material used in Fuel Vapor Storage System (FVSS) brackets. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODCUTION MATERIALS Material suppliers and part producers must conform to the
4、 Companys Standard Requirements For Production Materials (WSS-M99P1111-A). Note: Many 4D resin specifications prior to 2011, identified certain requirements with the symbol (s), which indicated that the mean and +/- 3 sigma values were to be reported. The specification minimum, maximum or range was
5、established using 3 sigma values. 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 8 - 14 g/ (ISO 1133, 230 C, 2.16 kg) 10 minutes 3.4.2 Filler Content 17 - 23% (ISO 3451-1, Method A, 650 +/- 25 C, CaCO3) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified all tests shal
6、l 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 specimen A and/or B. The
7、specimens shall be prepared according to ISO 294. No annealing allowed. ENGINEERING MATERIAL SPECIFICATION WSS-M4D959-A Copyright 2011, Ford Global Technologies, LLC Page 2 of 5 3.5.2 Density 1.02 - 1.09 g/cm3 (ISO 1183, Method A) 3.5.3 Tensile Strength at Break, 14 MPa min (ISO R 527, 150 min x 10
8、x 4.0 +/- 0.2 mm specimen, 5 mm/minute test speed) 3.5.4 Flexural Modulus 1.2 GPa min (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/minute test speed, 64 mm support span) 3.5.5 Shear Modulus at 23 C 600 MPa min (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain leve
9、l below 1%. Specimen approximately 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 min) Additionally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +240 C temperature range,
10、at 5 C min intervals. The plotted curve must be within tolerance range shown on page 4. 3.5.6 Impact Strength, Notched Izod (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 6.5 kJ/m2 min 3.5.6.2 At -40 +/- 2 C 2.0 kJ/m2 min The test specimens must be
11、conditioned for min of 6 h at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold box. 3.5.7 Heat Deflection Temperature 46 C min (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, edgewise, 0.32 +/- 0.01 mm deflection. At 1.80 MPa) 3.5.8 Heat Aging
12、Performance (ISO 188, except 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 at Break +/- 25% (Test Method per para 3.5.3) Change from original ENGINEERING MATERIAL SPECIFICATION WS
13、S-M4D959-A Copyright 2011, Ford Global Technologies, LLC Page 3 of 5 3.5.8.2 Impact Strength, Notched Izod Change +/- 25% (Test Method per para 3.5.6.1, Change from original specimens to be notched before heat aging) 3.6 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate 100 mm/minute max The specimen size
14、required for material approval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. 3.7 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h) Fog Number 90 min Formation of clear film, droplets or crystals is cause for rejection. 4. GENERAL INFORMATION This inform
15、ation given below is provided for clarification and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. 4.1 COEFFICIENT OF LINEAR THERMAL EXPANSION (ASTM E 831 TMA, temperature range -30 to +30 C) Flow 7.99E-5 mm/mm/ C
16、Cross Flow 1.25E-4 mm/mm/ C 4.2 MOLD SHRINKAGE (ISO 2577, approximately 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 4.2.1 Molding Shrinkage After 48 h at 23 +/- 2 C 1.3% 4.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C 0.2% After 30 minutes at 120 C 0.3%
17、4.3 MELT TEMPERATURE 160 C (ISO 11357, 10 C/minute heating rate) 4.4 HEAT DEFLECTION TEMPERATURE 80 C (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, edgewise, 0.32 +/- 0.01 mm deflection. At 0.45 MPa) ENGINEERING MATERIAL SPECIFICATION WSS-M4D959-A Copyright 2011, Ford Global Technologies, LLC Page 4
18、of 5 4.5 ELONGATION AT BREAK 100% (ISO R 527) 4.6 IMPACT RESISTANCE, FALLING WEIGHT, min 23 J (ASTM D 3029, Method GC, specimen thickness, 3.2 mm) 4.7 RECYCLING CODE PP-KD20 5. SUMMARY OF REVISIONS 2011 08 08 Lowered Melt Flow from 280 to 230 C. Changed Tensile strength measurement from max load to at Break. Removed the (s) symbols marking requirements. ENGINEERING MATERIAL SPECIFICATION WSS-M4D959-A Copyright 2011, Ford Global Technologies, LLC Page 5 of 5
