1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2012 06 20 N Status No usage or replacement M. Gramlich, NA 2006 03 31 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.9, 3.10 & 4 1997 12 17 Activated M. Myers Controlled document at www.MATS Copyright 2012, Ford Global Technologies, LLC Pa
2、ge 1 of 6 POLYAMIDE 6 (PA6), HEAT STABILIZED 20% GLASS WSS-M4D822-A3 FIBER/MINERAL REINFORCED MOLDING COMPOUND, EXTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a UV and heat stabilzed 20% glass fiber and mineral reinforced polyamide 6 molding compound. 2
3、. APPLICATION This specification was released originally for material used for exterior low gloss black mirror housings. NOTICE: This material absorbs and retains moisture. Part design and tolerances must accommodate changes in part dimensions and physical properties due to moisture absorption or lo
4、ss in the service/assembly environment. 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). 3.1.1 All requirements of this specification, identified by s
5、ymbol(s), shall be met with data representing 3 sigma values. 3.3 CONDITIONING AND TEST CONDITIONS All test values indicated herein are based on material and specimens with moisture content not exceeding 0.2% (test according to ISO 960, Method B). All test materials immediately after processing have
6、 to be sealed in containers that are impermeable to water vapor. If the moisture content exceeds 0.2%, condition the material for a min of 16 h at 40 - 50 C at a reduced pressure below 133 Pa. Conduct tests in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5% relative humidity. Individual specimen
7、s shall not be removed from closed containers until immediately before testing. 3.4 MOLDING COMPOUND (s) 3.4.1 Glass Fiber/Mineral Content 19 - 22% (ISO 3451-1, Method A) (s) 3.4.2 Melt Temperature, min 218 C (ISO 3146, Method C, 10 C/minute heating rate) ENGINEERING MATERIAL SPECIFICATION WSS-M4D82
8、2-A3 Copyright 2012, Ford Global Technologies, LLC Page 2 of 6 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 min x 10 x 4.0 +/- 0.2
9、 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 1874-2. Specimens with shorter dimensions shall be cut from the center of the specimen A. No annealing allowed. 3.5.2 De
10、nsity 1.27 - 1.31 (ISO 1183, Method A) g/cm3 (s) 3.5.3 Tensile Strength at Break, min 90 MPa (ISO 527-1 and ISO 527-2, 150 min x 10 x 4.0 +/- 0.2 mm specimen, test speed: 5 mm/ minute) (s) 3.5.4 Flexural Modulus, min 3.7 GPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen
11、A, 2 mm/ minute test speed, 64 mm support span) 3.5.5 Shear Modulus at 23 C 1.15 - 1.93 GPa (ASTM D 5279, 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 clam
12、ps 35 - 40 mm. Soak time at each temperature interval - 3 minutes min). Additionally, a shear modulus versus temperature curve shall be plotted for -50 to +220 C temperature range, at 5 C min intervals. The plotted curve must be within tolerance range granted on the original material approval and it
13、 shall constitute the reference standard for materials supplied to this specification and shall be kept on file at the designated material laboratory and be available 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
14、specimens for each test) 3.5.6.1 At 23 +/- 2 C 2.5 kJ/m2 3.5.6.2 At -40 +/- 1 C 2.0 kJ/m2 ENGINEERING MATERIAL SPECIFICATION WSS-M4D822-A3 Copyright 2012, Ford Global Technologies, LLC Page 3 of 6 The test specimen must be conditioned for minimum of 6 h at the above specified temperature prior to im
15、pact test. Low temperature testing shall be done within the cold chamber, if not possible, test may be conducted outside, but within 5 s. (s) 3.5.7 Heat Deflection Temperature, min 144 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.
16、1 mm deflection. At 1.80 MPa) All specimens dry as molded. If not tested immediately after molding, specimens must be stored in a sealed, moisture-proof container filled with silica gel. 3.5.8 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 110 +/- 2 C. After heat aging t
17、est specimens are to be conditioned in a desiccator for 3 - 5 h at 23 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.8.1 Impact Strength, Izod Change +/- 25% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 FOGGI
18、NG (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h) Fog Number, min 95 Formation of clear film, droplets or crystals is cause for rejection. 3.7 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 10
19、0 x 1.0 +/- 0.1 mm (use specimen C) with a smooth surface. 3.8 WEATHERING RESISTANCE After exposure in accordance 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 b
20、e 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 polish (auto wax) after the outdoor exposure, at permission of the affected Product Development Materials Acti
21、vity. ENGINEERING MATERIAL SPECIFICATION WSS-M4D822-A3 Copyright 2012, Ford Global Technologies, LLC Page 4 of 6 All initial approvals will be based on the preliminary Weatherometer exposure, pending Florida and Arizona exposure results for final approval. 3.8.1 Xenon Arc Weatherometer Rating 3 - 4
22、(SAE J1960, 2500 kJ/m2 exposure min, specimen size: 60 x 60 min, 2.0 +/- 0.1 mm thick, smooth surface, low gloss injection molded specimen) 3.8.2 12 months Florida Rating 4 12 months Arizona (SAE J1976, 5 south, direct weathering inland, specimen size: 60 x 60 min, 2.0 +/- 0.1 mm thick, smooth surfa
23、ce, low gloss injection molded specimen) 3.8.3 24 months Florida Rating 3 - 4 24 months Arizona (SAE J1976, 5 south, direct weathering inland, specimen size: 60 x 60 min, 2.0 +/- 0.1 mm thick, smooth surface, low gloss injection molded specimen) 5. GENERAL INFORMATION The information given below is
24、provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION (ASTM E 831 TMA, temperature range -30 to + 30 C) Flow 4.7-5/ C Across Flow 7.2-5/ C 5.2 MOLD SHRINKAGE (ISO/DIS 294-3, 60 x 60 x 2.0 +/- 0.1 mm injection molded s
25、pecimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C Flow 0.46% Cross Flow 0.28% ENGINEERING MATERIAL SPECIFICATION WSS-M4D822-A3 Copyright 2012, Ford Global Technologies, LLC Page 5 of 6 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C Flow 0.0% Cross Flo
26、w 0.0% . After 30 minutes at 120 C Flow 0.1% Crossflow 0.1% 5.3 WATER ABSORPTION 1.45% (ISO 62, 24 h immersion, 50 +/- 1 mm diameter, 3.2 +/- 0.2 mm thick specimen) 5.4 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 min) 5.4
27、.1 After Moisture Conditioning 11.0 kJ/m2 The notched specimens shall be immersed for 48 h in distilled water at 50 +/- 1 C and subsequently conditioned for 1 h at 23 +/- 2 C and 50 +/- 5% relative humidity prior to test and tested under the same conditions within 1 h. 5.5 HEAT DEFLECTION TEMPERATUR
28、E 207 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) 5.6 MODULUS OF ELASTICITY 5.2 GPa (ISO 527-1 and ISO 527-2, 150 min x 10 x 4.0 +/- 0.2 mm specimen, test speed: 1 mm/minute) 5.7 IMPACT STRENGTH, CHA
29、RPY (Average Values) (ISO 179/1eA, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, 10 specimens for each test) 5.7.1 At 23 +/- 2 C 3.0 kJ/m2 5.7.2 At -40 +/- 1 C 2.7 kJ/m2 The test specimen must be conditioned for min of 6 h at the above specified temperature prior to impact test
30、. Low temperature testing shall be done within the cold chamber, if not possible, test may be conducted outside, but within 5 s. 5.8 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSES PA6-(GF+M)20 ENGINEERING MATERIAL SPECIFICATION WSS-M4D822-A3 Copyright 2012, Ford Global Technologies, LLC Page 6 of 6
