1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2007 07 31 N-STATUS Replaced by WSS-M4D961-A4; 3.9.1 renumber correctly to 3.8.4 K. Mueller 2006 07 27 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.9, 3.10 & 1998 09 02 Activated T. Honey Printed copies are uncontrolled Copyright 2007, Ford
2、Global Technologies, LLC Page 1 of 6 THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO), WSS-M4D961-A1 COLOR PIGMENTED, UV STABILIZED, HIGH MELT FLOW, FOR MOLDED-IN-COLOR AND PARTIALLY PAINTED APPLICATIONS, EXTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a filled,
3、 weatherable and paintable thermoplastic injection molding compound. 2. APPLICATION This specification was released originally for material used for exterior bumper applications. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to
4、the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1.1 All requirements of this specification, identified by symbol (s), shall be met with data representing 3 sigma values. 3.4 MOLDING COMPOUND (s) 3.4.1 Melt Flow Rate 12 - 19 g/10 minutes (ISO 1133, 230 C, 2.16 kg) (s)
5、3.4.2 Filler Content 10 - 13% (ISO 3451-1, Method A, talc filler, 3 h at 565 C +/- 25 C, test portion 4 - 5 g) 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 following dimens
6、ions are required: A. 150 min x 10 x 4.0 +/- 0.2 mm (Tensile Bar, ISO 3167) B. 150 x 100 x 4.0 +/- 0.2 mm (ISO/DIS 294-3) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D961-A1 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 2 of 6 Test specimen A shall be molded using mo
7、lding conditions defined in ISO 294. Specimens with shorter dimensions shall be cut from the center of the specimen A. No annealing allowed. 3.5.2 Density 0.95 - 0.98 g/cm3 (ISO 1183, Method A) 3.5.3 Hardness, Durometer D 54 - 63 (ISO 868, 15 s dwell) (s) 3.5.4 Tensile Strength at Yield, min 17 MPa
8、(ISO 527-1 and ISO 527-2, 150 min x 10 x 4.0 +/- 0.2 mm specimen, test speed: 50 mm/minute) (s) 3.5.4.1 Elongation at Yield, min 3% (Test Method according to para 3.5.4) (s) 3.5.5 Flexural Modulus, min 1.06 GPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/minute test speed, 64 mm support span)
9、3.5.6 Shear Modulus at 23 C 440 - 720 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen approximately 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 inter
10、val - 3 minutes min) Additionally, a shear modulus vs. temperature curve shall be plotted for -50 C to +150 C temperature range, at 5 C min intervals. The plotted curve must be within tolerance range granted on the original material approval and it shall constitute the reference standard for materia
11、ls supplied to this specification and shall be kept on file at the designated material laboratory and be available on request. (s) 3.5.7 Impact Strength, Izod, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, 10 specimens for each test) 3.5.7.1 At 23 C +/- 2 C No
12、break 3.5.7.2 At -40 C +/- 1 C 2.8 kJ/m23.5.7.3 At 0 C +/- 2 C No break The test specimen must be conditioned for min of 6 h at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold chamber, if not possible, test may be conducted outside, but wit
13、hin 5 s. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D961-A1 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 3 of 6 (s) 3.5.8 Heat Deflection Temperature, min 42 C (ISO 75-1 and ISO 75-2, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, flatwise, 0.3
14、4 +/- 0.1 mm deflection. At 1.80 MPa) 3.5.9 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 120 C +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength at +/- 10% Yield Change (Test Method per para 3
15、.5.4) 3.5.9.2 Impact Strength, Izod +/- 15% Change (Test Method per para 3.5.7.1, specimens to be notched before heat aging) 3.6 FLAMMABILITY (ISO 3795/SAE J369) 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. 3.7 PAI
16、NTABILITY Painted substrate must comply with all requirements of paint performance WSS-M2P181-A. Production level, heat resistant tapes must be used when preparing test panels. The use of improper sample prep materials can influence test results. 3.8 WEATHERING RESISTANCE After exposure in accordanc
17、e with para 3.8.1, 3.8.2, and 3.8.3, the material shall show no color change in excess of specified Gray Scale rating (AATCC Evaluation Procedure 1/ISO 105-A02). In addition, there shall be no cracking, crazing or other deterioration. A slight loss of gloss or chalking will be allowed provided an ac
18、ceptable appearance can be achieved by washing and/or polishing with Ford car polish (auto wax) after the outdoor exposure, at permission of the affected Product Development Materials Activity. All initial approvals will be based on the preliminary Weatherometer exposure, pending Florida and Arizona
19、 exposure results for final approval. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D961-A1 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 4 of 6 3.8.1 Xenon Arc Weatherometer Rating 4 - 5 (SAE J1960, 2500 kJ/m2exposure min, specimen size: 150 x 100 mm min, 3.2 +/- 0.2
20、mm thick, molded in smooth polished mold) 3.8.2 12 months Florida Rating 4 - 5 12 months Arizona (SAE J1976, 5 south, direct weathering inland, specimen size: 150 x 100 mm, min, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.8.3 24 months Florida Rating 4 - 5 24 months Arizona (SAE J1976, 5
21、 south, direct weathering inland, specimen size: 150 x 100 mm, min, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.8.4 Regrind 20% maximum of regrind produced from molded parts is acceptable for molded-in-color applications and 40% maximum for full paint, providing all requirements of this
22、specification and WSS-M2P181-A are met. 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 4.6 - 7.1 mm/mm/C (ASTM D 831 or TMA, temperature range -30 C to 30 C
23、) 5.2 MOLD SHRINKAGE (ISO 2577, approximately 150 x 100 x 3.2 mm +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 C +/- 2 C 0.5 - 0.9% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C +/- 2 C 0.7 - 1.0% . After 30 minutes at 120 C
24、+/- 2 C 0.7 - 1.1% ENGINEERING MATERIAL SPECIFICATIONWSS-M4D961-A1 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 5 of 6 5.3 HEAT DEFLECTION TEMPERATURE 82 C (ISO 75-1 and ISO 75-2, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, flatwise, 0.34 +/- 0.1 mm deflection. At 0.45 MPa) 5.4 RECYCLING CODE PP+EPDM ENGINEERING MATERIAL SPECIFICATIONWSS-M4D961-A1 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 6 of 6
