1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 07 14 N-STATUS No replacement A. Pan, APA 2005 09 20 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.9, 3.10 & 4 1990 12 03 Released EP00E01031542000 L. Rodigas Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC
2、Page 1 of 5 THERMOPLASTIC POLYOLEFIN ELASTOMER (TPO) WSK-M4D550-A3 26% MINERAL FILLED, MEDIUM HIGH IMPACT INTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a rigid thermoplastic polyolefin elastomer (TPO) injection molding compound, 26% mineral filled, wit
3、h medium high impact and good scratch resistance. 2. 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 Requirem
4、ents For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 3 - 6 g/10 minutes (ISO 1133/ASTM D 1238, 230 C, 2.16 kg) 3.4.2 Mineral Content 24 - 28% (ISO 3451/1, Method A, talc filler, 1 h at 650 +/- 25 C, test portion 1 to 2 g) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparatio
5、n 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 shorter dimensions shall be cut
6、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 1.08 - 1.13 g/cm (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Hardness Durometer D 59 - 66 (ISO 868/ASTM D 2240, 15 s dwell) ENGINEERING MATERIAL SPE
7、CIFICATIONWSK-M4D550-A3 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 5 3.5.4 Tensile Strength at Yield, min 20 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) 3.5.5 Flexural Modulus, min 2.0 GPa (ISO 178/ASTM D 790M
8、 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 720 - 1200 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. Spe
9、cimen length between clamps 35-40 mm. Soak time at each temperature 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 5. 3.5.
10、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 15 kJ/m 3.5.7.2 At -40 +/- 2 C 2.5 kJ/m 3.5.7.3 At 10 +/- 2 C 6.0 kJ/m The test specimens must be conditioned for minimum of 6 h at the above s
11、pecified 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. 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 55 C 3.5.8.2 At 0.4
12、5 MPa 95 C 3.5.9 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 120 +/- 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 +/- 15% (Test Method per para 3.5.4) 3.5.9.2 Impact Stre
13、ngth, Izod Change, max -15% (Test Method per para 3.5.7.1, specimens to be notched before heat aging) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D550-A3 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 5 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The
14、 specimen size required for material approval is 355 x 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. 3.8 WEATHERING RESISTANCE After exposure in accordance with 3.8.1 and 3.
15、8.2 the material shall 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 app
16、earance can be achieved by washing with mild detergents and water (ratio 5:95 by volume), or equivalent at permission of the affected Product Development Materials Activity. All initial approvals will be based on the preliminary Weatherometer exposure, pending Florida exposure results for final appr
17、oval. 3.8.1 Xenon Arc Weatherometer Rating 4-5 (SAE J1885, 1240 kJ/m2exposure minimum, specimen size: 150 x 100 mm minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.8.2 12 months Florida Rating 4-5 (FLTM BI 160-01, 5 south, under glass, specimen size: 150 x 100 mm, minimum, 3.2 +/- 0.
18、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 3 - 10-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 15
19、0 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% ENGINEERING MATERIAL SPECIFICATIONWSK-M4D550-A3 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 5.2.2 Post Shrinkage (Separate specimens require
20、d for each test) . After 48 h at 80 C 0.0 - 0.3% . After 30 min at 120 C 0.1 - 0.5% 5.3 RESISTANCE TO SCRATCHING Rating 1 (FLTM BN 108-13, grain: Lynx 89/20 or equivalent) at 2N force ENGINEERING MATERIAL SPECIFICATIONWSK-M4D550-A3 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5
