1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 07 N-STATUS No replacement named J. Crist, NA 2005 09 06 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1988 07 14 Released SM/EQ5376 TP L. Rodigas Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LL
2、C Page 1 of 5 THERMOPLASTIC POLYOLEFIN ELASTOMER (TPO) WSK-M4D550-A2 27% MINERAL FILLED - HIGH IMPACT NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a rigid thermoplastic polyolefin (TPO) elastomeric injection molding compound, 27% mineral filled, high impact. 2
3、. APPLICATION This specification was released originally for material used for instrument panels. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4
4、 MOLDING COMPOUND 3.4.1 Melt Flow Rate 2 - 5 g/10 min (ISO 1133/ASTM D 1238, 230 C, 2.16 kg) 3.4.2 Filler Content 25 - 29% (ISO 3451/1, Method A, talc filler, 2 h at 650 +/- 25 C, test portion 1 to 2 g) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified all tests
5、 shall be carried out on injection molded one-end gated test specimens. The following dimensions are required: A. 150 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
6、 specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.11 - 1.14 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Hardness, Durometer D 57 - 61 (ISO 868/ASTM D 2240, 15 s dwell) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D550-A2 Printed copies are uncontrolled Cop
7、yright 2010, Ford Global Technologies, LLC Page 2 of 5 3.5.4 Tensile Strength at Yield, min 16 MPa (ISO R 527/ASTM D 638M, 150 x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) 3.5.4.1 Elongation at Break, min 50% (Test Method according to para 3.5.4) 3.5.5 Flexural Modulus, min 1.5 GPa (ISO 178
8、/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.5.6 Shear Modulus at 23 C 600 - 910 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 spec
9、imen A). Additionally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +160 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 5. 3.5.7 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 63.5 x 10 x 4.0 +/-
10、 0.2 mm specimen, 10 specimens for each test) 3.5.7.1 At 23 +/- 2 C 23 kJ/m23.5.7.2 At -40 +/- 2 C 3 kJ/m23.5.7.3 At 10 +/- 2 C 8.5 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
11、 cold box, if not possible, test can be conducted outside, but within 5 s. 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 51 C 3.5.8.2 At 0.45 MPa 96 C 3.5.9 Heat Aging Performance (ISO 188/ASTM D 573, 1000 h at 120 +/- 2 C) 3.5.9.1
12、 Tensile Strength Change +/- 15% (Test Method per para 3.5.4) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D550-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 5 3.5.9.2 Impact Strength, Izod Change +/- 15% (Test Method per para 3.5.7.1, specimens to be notched
13、before heat aging) 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/min The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. 3.7 SPECIAL REQUIREMENTS 3.7.1 Weathering Resistance After exposure in accordance with 3.7.1.1 and 3.7.1.2 the material shall
14、 show no fading or color change in excess of specified AATCC rating (AATCC Gray Scale for Evaluating Change in Color, 10 step). In addition, there shall be no cracking, crazing or other deterioration. A slight loss of gloss or chalking will be allowed provided an acceptable appearance can be achieve
15、d by washing with mild detergents and water (ratio 5:95 by volume). 3.7.1.1 400 h Weatherometer Rating 4-5 (FLTM BO 101-01, specimen size: 150 x 100 mm minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.7.1.2 12 months Florida Rating 4-5 (FLTM BI 160-01, 5 south, under glass, specimen
16、size: 150 x 100 mm minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 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 5 - 8 -5/ C (ASTM D 696) 5.
17、2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D550-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 0.9 - 1.1% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.0 - 0.15% . After 30 min at 120 C 0.1 - 0.25 ENGINEERING MATERIAL SPECIFICATIONWSK-M4D550-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5
