1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 10 19 N-STATUS Replaced by WSS-M4D911-B 2005 11 30 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8 & 4 1990 02 01 Released C01031532 L. Rodigas Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of
2、 4 THERMOPLASTIC POLYOLEFIN ELASTOMER (TPO) 30% WSK-M4D699-A CALCIUM CARBONATE FILLED NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a semi-rigid, 30% calcium carbonate filled thermoplastic polyolefin elastomeric (TPO) injection molding compound with good dampin
3、g properties. 2. APPLICATION This specification was released originally for material used for wheel house fillers which are unexposed to sunlight. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATER
4、IALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 8 - 14 (ISO 1133/ASTM D 1238, g/10 minutes 230 C, 2.16 kg) 3.4.2 Filler Content 27 - 33% (ISO 3451/1, Method A, calcium c
5、arbonate filler, 1 h at 950 +/- 50 C, test portion E - 1 to 2 g. Calculate % filler: Ash - A x 1.785 x 100, divided by E) 3.5 MOLDED 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 follo
6、wing 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 the test specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. ENGI
7、NEERING MATERIAL SPECIFICATION WSK-M4D699-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 4 3.5.2 Density 1.09 - 1.14 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Hardness Durometer D 45 - 53 (ISO 868/ASTM D 2240, 15 s dwell) 3.5.4 Tensile Strength
8、 at Yield, min 7 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) 3.5.4.1 Elongation at Yield, min 13% (Test Method according to para 3.5.4) 3.5.5 Flexural Modulus, min 400 MPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64
9、 mm support span) 3.5.6 Shear Modulus at 23 to C 120 - 220 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 temp
10、erature interval - 3 minutes minimum) Additionally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +120 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 4. 3.5.6.1 Loss Factor (tan d) of Damping The material shall not sh
11、ow values below the minimum curve as shown on page 4. (Test Method per para 3.5.6) 3.5.7 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 63.5 x 10 x 4.0 +/-0.2 mm specimen, 10 specimens for each test) 3.5.7.1 At 23 +/- 2 C No break 3.5.7.2 At -30 +/- 2 C 9 kJ/m2 3.5.7.3 At -40 +/
12、- 2 C 5 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, test can be conducted outside, but within 5 s. ENGINEERING MATERIAL SPECIFICATION WSK-M4D699-A
13、Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 4 3.5.8 Heat Deflection Temperature, min (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen) 3.5.8.1 At 1.82 MPa 35 C 3.5.8.2 At 0.45 MPa 52 C 3.5.9 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air
14、changes/h, 1000 h at 125 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength at Yield Change +/- 25% (Test Method per para 3.5.4) 3.5.9.2 Impact Strength, Izod Change No break (Test Method per para 3.5.7.1, specimens to be no
15、tched before heat aging) 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. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requi
16、rements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 5 - 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 0.5 - 1.5% 5.2.2 Post Shrinkage (Separate specimens require
17、d for each test) After 48 h at 80 C 0.2 - 0.6% After 30 min at 120 C 0.0 - 0.7% 5.3 FOGGING (SAE J 1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Number, min 80 Formation of clear film, droplets or crystals is cause for rejection. ENGINEERING MATERIAL SPECIFICATION WSK-M4D699-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 4
