1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2012 08 27 N Status Replaced by WSS-M4D854-B1 V. Cerato, EU 2005 12 21 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1990 08 01 Released EP00E010315380000 L. Rodigas Controlled document at www.MATS Copyright 2012, Ford Glob
2、al Technologies, LLC Page 1 of 4 POLYPROPYLENE (PP) HOMOPOLYMER, 30% GLASS WSK-M4D732-A1 FIBER REINFORCED, MELT FLOW RATE 0.5 - 4.0 NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 30% coupled glass fiber reinforced injection molding compound based on polypropyl
3、ene homopolymer with melt flow rate of 0.5 - 4.0 g/10 minutes. 2. APPLICATION This specification was released originally for material used for bulb holder. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard R
4、equirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 0.5 - 4.0 g/10 minutes (ISO 1133/ASTM D 1238, 230 C, 2.16 kg) 3.4.2 Glass Fiber Content 28 - 32% (ISO 3451/1, Method A, 1 h at 750 +/- 25 C, test portion 1 to 2 g) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparat
5、ion 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 be cu
6、t 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 1.11 - 1.16 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strenght at Max Load, min 60 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0
7、/- 0.2 mm specimen, 5 mm/min test speed) ENGINEERING MATERIAL SPECIFICATION WSK-M4D732-A1 Copyright 2012, Ford Global Technologies, LLC Page 2 of 4 3.5.4 Flexural Modulus, min 4.0 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 Mod
8、ulus at 23 C 1.03 - 1.72 GPa (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 minim
9、um). Additionally, a Shear Modulus vs. 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. 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
10、mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 5.5 kJ/m2 3.5.6.2 At -40 +/- 2 C 4.0 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, tes
11、t 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 specimen) 3.5.7.1 At 1.82 MPa 133 C 3.5.7.2 At 0.45 MPa 150 C 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 140 +/- 2 C. Unaged pro
12、perty values shall be determined at the time of the aged properties determination) 3.5.8.1 Tensile Strength at Max Load Change +/- 15% (Test Method per para 3.5.3) 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) ENGINEERING MAT
13、ERIAL SPECIFICATION WSK-M4D732-A1 Copyright 2012, Ford Global Technologies, LLC Page 3 of 4 3.6 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. 3.7 FOGGING (FLTM BO 116-03) Fog Number, min 80 F
14、ormation 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 2 - 10-5/ C (ASTM D 696) 5.2
15、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 0.2 - 0.8% 5.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C 0.1 - 0.4% After 30 min at 120 C 0.2 - 0.5% 5.3 ELONGATION AT BREAK, min 1.5% (Test method according to para 3.5.3) ENGINEERING MATERIAL SPECIFICATION WSK-M4D732-A1 Copyright 2012, Ford Global Technologies, LLC Page 4 of 4
