1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 05 19 N-STATUS Replaced by WSS-M4D729-B1 V. Cerato, EU 2005 12 14 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1990 10 01 Released EP00E01031540000 L. Rodigas Printed copies are uncontrolled Copyright 2010, Ford Global Techno
2、logies, LLC Page 1 of 4 POLYPROPYLENE (PP) HOMOPOLYMER, 20% MINERAL WSK-M4D729-A2 FILLED, MELT FLOW RATE 12 - 22 NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 20% mineral (talc) filled injection molding compound based on polypropylene homopolymer with control
3、led rheologic properties and melt flow rate of 12 - 22 g/10 minutes. 2. APPLICATION This specification was released originally for material used for rear lamp bulb holder cover. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to t
4、he Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 12 - 22 g/10 minutes (ISO 1133/ASTM D 1238, 230 C, 2.16 kg) 3.4.2 Mineral Content 18 - 22% (ISO 3451/1, Method A, talc filler 1 h at 750 +/- 25 C, test portion 1 to 2 g) 3.5 MOLDED
5、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 with sh
6、orter 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 1.03 - 1.08 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D729-A2 Printed copies
7、are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 4 3.5.3 Tensile Strength at Max Load, min 27 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/min test speed) 3.5.4 Flexural Modulus, min 2.2 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.
8、0 +/- 0.2 mm specimen, 64 mm support span) 3.5.5 Shear Modulus at 23 C 0.97 - 1.63 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
9、. Soak time at each temperature interval - 3 minutes minimum). Additionally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +150 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 1
10、80, Method A/ASTM D 256, 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 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 testin
11、g shall be done within 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 63 C 3.5.7.2 At 0.45 MPa 110 C 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 150
12、 +/- 50 air changes/h, 1000 h at 130 +/- 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 +/- 25% (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod Change Change, max -15% (Test Method per para 3.5.
13、6.1, specimens to be notched before heat aging) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D729-A2 Printed copies are uncontrolled Copyright 2010, 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
14、 100 x 1.0 +/- 0.1 mm with a smooth surface. 3.7 FOGGING (FLTM BO 116-03) Fog Number, min 90 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
15、 this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 5 12-5/ 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 0.8 - 1.3% 5.2.2 Post Shrinkage (Separate specimens required for each
16、 test) . After 48 h at 80 C 0.2 - 0.5% . After 30 min at 120 C 0.2 - 0.5% 5.3 ELONGATION AT BREAK, min 15% (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 SPECIFICATIONWSK-M4D729-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4
