1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 21 N-STATUS No replacement named J. Crist, NA 2006 07 19 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.9, 3.10 & 4 1997 05 15 Activated T.A. Honey Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1 of
2、 4 ETHYLENE/METHACRYLIC ACID IONOMER (EMA), WSS-M4D934-A2 MODIFIED, 10% GLASS FIBER REINFORCED MOLDING COMPOUND, EXTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 10% glass fiber reinforced weatherable molding compound based on modified ionomer ethylene/
3、 methacrylic acid). 2. APPLICATION This specification was released originally for material used for light truck box rail moldings. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Productio
4、n 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 2.6 - 5.0 g/ (ISO 1133, 190 C, 2.16 kg) 10 minutes (s) 3.4.2 Glass Fiber Content 8 - 12% (ISO 3451-1,
5、 Method A, glass filler, 3 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 shall be carried out on injection molded one-end gated test specimens. The following dimensions are required: A. 150 minimum x 10 x 4
6、.0 +/- 0.2 mm (ISO 3167, Type 1A) B. 60 x 60 x 2.0 +/- 0.1 mm (ISO/DIS 294-3) C. 355 x 100 x 1.0 +/-0.1 mm (ISO 3795) Test specimen A shall be molded using molding conditions defined in ISO 294. Specimens with shorter dimensions shall be cut from the center of the specimen A. No annealing allowed. 3
7、.5.2 Density 0.99 - 1.05 (ISO 1183, Method A) g/cm3ENGINEERING MATERIAL SPECIFICATIONWSS-M4D934-A2Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 4 (s) 3.5.3 Tensile Strength at Yield, min 14 MPa (ISO 527-1 & ISO 527-2, 150 minimum x 10 x 4.0 +/- 0.2 mm specim
8、en, test speed: 50 mm/minute) (s) 3.5.4 Flexural Modulus, min 610 MPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, 2 mm/min test speed, 64 mm support span) 3.5.5 Shear Modulus at 23 C 230 - 390 MPa (ASTM D 5279, forced constant amplitude, fixed frequency of 1 Hz +/-
9、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 temperature interval - 3 minutes minimum) Additionally, a shear modulus versus temperature curve shall be plotted for -50 to +150 C te
10、mperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range granted on the original material approval and it shall constitute the reference standard for materials supplied to this specification and shall be kept on file at the designated material laboratory and be ava
11、ilable on request. (s) 3.5.6 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) 3.5.6.1 At 23 +/- 2 C 18 kJ/m23.5.6.2 At -40 +/- 1 C 6 kJ/m23.5.6.3 At 0 +/- 2 C 15 kJ/m2The test specimen must be conditioned for mini
12、mum of 6 hours 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 within 5 seconds. (s) 3.5.7 Heat Deflection Temperature, min 40 C (ISO 75-1 & ISO 75-2, 80 x 10 x 4.0 +/- 0.2 mm
13、specimen use center section of specimen A, flatwise, 0.34 +/- 0.1 mm deflection. At 1.80 MPa) 3.5.8 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 100 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.8.1 Tensile St
14、rength at +/- 15% Yield Change ENGINEERING MATERIAL SPECIFICATIONWSS-M4D934-A2Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 4 3.5.8.2 Impact Strength, Izod +/- 15% Change (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 FLAMMABIL
15、ITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.25 +/- 0.1 mm (use specimen C) with a smooth surface. 3.7 WEATHERING RESISTANCE After exposure in accordance with 3.7.1, 3.7.2, and 3.7.3, the material shall show no color change in
16、 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 acceptable appearance can be achieved by washing and/or polishing with Ford car p
17、olish (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 exposure results for final approval. 3.7.1 Xenon Arc Weatherometer Rating 4 -
18、5 (SAE J1960, 2500 kJ/m2exposure minimum, specimen size: 60 x 60 minimum, 2.0 +/- 0.1 mm thick, smooth surface, injection molded specimen) 3.7.2 12 months Florida Rating 4 - 5 12 months Arizona (SAE J1976, 5 south, direct weathering inland, specimen size: 60 x 60 minimum, 2.0 +/- 0.1 mm thick, smoot
19、h surface, low gloss injection molded specimen) 3.7.3 24 months Florida Rating 4 24 months Arizona (SAE J1976, 5 south, direct weathering inland, specimen size: 60 x 60 minimum, 2.0 +/- 0.1 mm thick, smooth surface, low gloss injection molded specimen) 3.8 FOGGING (SAE J1756, 3 h at 100 C heating, 2
20、1 C cooling plate, post test conditioning 1 h) Fog Number, min 99 Formation of clear film, droplets or crystals is cause for rejection. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D934-A2Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4 5. GENERAL INFORMATION The
21、information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 5.6-5/ C (ASTM E 831 TMA, temperature range -30 to +30 C) 5.2 MOLD SHRINKAGE (ISO/DIS 294-3, 60 x 60 x 2.0 +/- 0.1 mm injection molded s
22、pecimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 0.2 - 0.6% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.3 - 0.8% 5.3 HEAT DEFLECTION TEMPERATURE, min 60 C (ISO 75-1 & ISO 75-2, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A,
23、edgewise, 0.34 +/- 0.1 mm deflection. At 0.45 MPa) 5.4 MODULUS OF ELASTICITY 1.6 GPa (ISO 527-1 & ISO 527-2, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, test speed: 1 mm/minute) 5.5 IMPACT STRENGTH, CHARPY (ISO 179/1eA, 80 x 10 x 4.0 +/- 0.2 mm specimen (use center section of specimen A), 10 specime
24、ns for each test) 5.5.1 At 23 +/- 2 C No break 5.5.2 At -40 +/- 1 C 12 kJ/m25.5.3 At -(0) +/- 2 C 14 kJ/m2The test specimen must be conditioned for minimum of 6 hours 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 within 5 seconds. 5.6 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSES EMA-GF10
