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-A2 FIBER REINFORCED, MELT FLOW RATE 10 - 18 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 polypropylen
3、e homopolymer with controlled rheologic properties and melt flow rate of 10 - 18 g/10 minutes. 2. APPLICATION This specification was released originally for material used for lamp housings. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must
4、conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 10 - 18 g/ (ISO 1133/ASTM D 1238, 230 C, 2.16 kg) 10 minutes 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 MO
5、LDED TEST SPECIMEN 3.5.1 Preparation 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 wi
6、th shorter dimensions shall 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. 3.5.2 Density 1.11 - 1.16 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, min 68 MPa (ISO R 527
7、/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/min test speed) ENGINEERING MATERIAL SPECIFICATION WSK-M4D732-A2 Copyright 2012, Ford Global Technologies, LLC Page 2 of 4 3.5.4 Flexural Modulus, min 5.0 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64
8、 mm support span) 3.5.5 Shear Modulus at 23 C 1.04 - 1.73 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 tempe
9、rature interval - 3 minutes minimum). 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,
10、Method A, 63.5 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 6.0 kJ/m2 3.5.6.2 At -40 +/- 2 C 5.0 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
11、the cold box, if not possible, test 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 135 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,
12、 1000 h at 140 +/- 2 C. Unaged property 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 -15% (Test Method per para 3.5.6.1, specimens to be notched
13、before heat aging) ENGINEERING MATERIAL SPECIFICATION WSK-M4D732-A2 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 (FL
14、TM BO 116-03) Fog Number, min 80 Formation 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 EXPAN
15、SION 2 10-5/ C (ASTM D 696) 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 0.3 - 0.8% 5.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C 0.1 - 0.3% After 30 min at 120 C 0.2
16、 - 0.4% 5.3 ELONGATION AT BREAK, min 1.5% (Test method according to para 3.5.3) 5.4 DETERMINATION OF CR-GRADE Melt Flow Rate-Ratio, max 4 Melt Flow Rate-Ratio = B/A x 100 Where: A - Melt Flow Rate at 190 C and 0.325 kg B - Melt Flow Rate at 190 C and 10 kg Test Method A and B according to ISO 1133 ENGINEERING MATERIAL SPECIFICATION WSK-M4D732-A2 Copyright 2012, Ford Global Technologies, LLC Page 4 of 4
