1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 19 N-STATUS No replacement named J. Crist, NA 2006 04 12 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1991 11 14 Released NB00I10043054132 M. Myers Printed copies are uncontrolled Copyright 2010, Ford Global Technologies,
2、LLC Page 1 of 4 POLYPROPYLENE (PP), 15% GLASS SPHERE WSB-M4D834-A REINFORCED HEAT STABILIZED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a heat stabilized thermoplastic injection molding compound based on polypropylene reinforced with glass s
3、pheres to reduce weight. 2. APPLICATION This specification was released originally for material used for an upper radiator sight shield assembly. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirement
4、s For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 3.0 - 9.0 g/ (ISO 1133/ASTM D 1238, 230 C, 2.16 kg) 10 minutes 3.4.2 Filler Content 12 - 18% (ISO 3451/1, Method A, 600 +/- 25 C, glass spheres) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless
5、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 portion of
6、the test specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 0.83 - 0.87 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, min 10 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min
7、ute test speed ENGINEERING MATERIAL SPECIFICATIONWSB-M4D834-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 4 3.5.4 Flexural Modulus, min 1.2 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
8、Modulus at 23 C 510 - 780 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 mini
9、mum). 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.
10、2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 2.0 kJ/m23.5.6.2 At -40 +/- 2 C 1.2 kJ/m2The 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 85 C 3.5.7.2 At 0.45 MPa 50 C 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 140 +/- 2 C. Unaged prope
12、rty values shall be determined at the time of the aged properties determination) 3.5.8.1 Tensile Strength at Change +/- 25% (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod Change +/- 25% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) ENGINEERING MATERIAL SPECIFI
13、CATIONWSB-M4D834-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 4 3.6 FOGGING (FLTM BO 116-03) Fog Number, min 90 The formation of droplets or coalescence into a clear film is cause for rejection. 3.7 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The
14、 specimen size required for material approval is 355 x 100 x 2.0 +/- 0.1 mm with a smooth surface. 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 8.2 - 10.0
15、-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 1.1 - 1.7% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 1.3 - 1.8% . After 30 min at 120 C 1.4 - 2.0% 5.3 RECYCLING CODE SAE PP-GB15 OPTIONAL ENGINEERING MATERIAL SPECIFICATIONWSB-M4D834-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4
