1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 3 2011 09 13 N Status Replaced by WRS-M4D911-B2 K. Mueller, NA 2006 07 17 Revised Format Updated 1998 03 20 Activated K. Bruley Controlled document at www.MATS Copyright 2011, Ford Global Technologies, LLC Page 1 of 4 POLYPROPYLENE (PP) C
2、OPOLYMER, HIGH IMPACT WSS-M4D911-B 100% RECYCLED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a high impact thermoplastic molding compound based on 100% recycled polypropylene copolymer from post consumer sources. 2. APPLICATION This specifica
3、tion was released originally for material used in fender aprons. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1.1 All requirements of this speci
4、fication, identified by symbol(s), shall be met with data representing 3 sigma values. 3.2 MOLDING COMPOUND (s) 3.2.1 Melt Flow Rate 6 - 10 g/10 minutes (ISO 1133, 230 C, 2.16 kg) (s) 3.2.2 Melt Temperature, min 160 C (ISO 3146, Method C, 10 C/ minute heating rate) 3.3 MOLDED TEST SPECIMEN 3.3.1 Pre
5、paration 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 10 x 4.0 +/- 0.2 mm Specimens with shorter dimensions shall
6、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. 3.3.2 Density 0.90 - 0.93 g/cm3 (ISO 1183, Method A) ENGINEERING MATERIAL SPECIFICATION WSS-M4D911-B Copyright 2011, Ford Global Technologies, LLC Page 2 of 4 (
7、s) 3.3.3 Tensile Strength at Yield, min 18.5 MPa (ISO R 527, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/minute test speed) (s) 3.3.3.1 Elongation at Yield, min 6.5% (Test Method according to para 3.3.3) (s) 3.3.4 Flexural Modulus, min 705 MPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/minu
8、te test speed, 64 mm support span) 3.3.5 Shear Modulus at 23 C 304 - 456 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level 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.
9、Soak time at each temperature interval - 3 minutes min) Additionally, a Shear Modulus versus Temperature curve shall be plotted for -50 to +150 C temperature range, at 5 C min intervals. The plotted curve must be within tolerance range shown on page 4. (s) 3.3.6 Impact Strength, Izod, min (ISO 180/1
10、A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.3.6.1 At 23 +/- 2 C 84 kJ/m2 3.3.6.2 At -40 +/- 1 C 3.6 kJ/m2 The test specimens must be 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.
11、(s) 3.3.7 Heat Deflection Temperature, min 42 C (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, tested edgewise, 0.32 +/- 0.01 mm deflection. At 1.80 MPa) 3.3.8 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
12、 of the aged properties determination) 3.3.8.1 Tensile Strength at Yield Change +/- 25% (Test Method per para 3.3.3) 3.3.8.2 Elongation at Yield Change +/- 25% (Test Method per para 3.3.3.1) ENGINEERING MATERIAL SPECIFICATION WSS-M4D911-B Copyright 2011, Ford Global Technologies, LLC Page 3 of 4 3.3
13、.8.3 Impact Strength, Izod Change +/- 25% (Test Method per para 3.3.6.1, specimens to be notched before heat aging) 3.4 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 rej
14、ection. 3.5 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. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this s
15、pecification. 4.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 8 - 14-5/C (ASTM E 831 (TMA), temperature range -30 to +30 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 1.4% 4.3 RECYCLING CODE PP ENGINEERING MATERIAL SPECIFICATION WSS-M4D911-B Copyright 2011, Ford Global Technologies, LLC Page 4 of 4
