1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2007 01 23 Activated Y. Bankowski, L. Sinclair Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 1 of 5 POLYAMIDE (PA) 66, 25% GLASS FIBER REINFORCED, IMPACT MODIFIED, WSS-M4D947-B1 INTERNALLY LUBRICATED (PTFE)
2、, HEAT STABILIZED, MOLDED IN COLOR, MOLDING COMPOUND, INTERIOR 1. SCOPE The material defined by this specification is a 25% glass fiber reinforced, impact modified, internally lubricated with PTFE, heat stabilized, molded-in-color, UV stabilized molding compound based on polyamide 66 for interior ap
3、plications. 2. APPLICATION This specification was released originally for material used for molded in color F-series seatbelt height adjuster buttons where stiffness, toughness and low friction are required. 2.1 LIMITATIONS This material absorbs and retains moisture. Part design and tolerances must
4、accommodate changes in part dimensions and physical properties due to moisture absorption or loss in the service/assembly environment. This material is internally lubricated and cannot be painted. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producer
5、s must conform to 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 using latest ISO test methods. 3.1.2 This specification was developed using virgi
6、n material properties. The use of regrind is permitted, for economic / environmental reasons, with compliance as indicated in WSS-M99P1111-A. Critical Process Parameters At the request of Ford Materials Engineering the supplier shall be responsible to collect critical process control data on each lo
7、t of material produced. Testing required will be jointly developed between Ford Materials Engineering and the supplier based on CP and PFMEA review at the time of initial approval. Annually the supplier will review the in process data with Ford Materials Engineering to show that the process has rema
8、ined under control. The data needs to be submitted in January for the previous calendar year. Data showing poor quality control measures or lack of submitted data may result in deletion from the Ford Approved Source List. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D947-B1 Printed copies are uncontrolle
9、d Copyright 2007, Ford Global Technologies, LLC Page 2 of 5 3.2 MOLDING COMPOUND (s) 3.2.1 Glass Fiber Content 23 - 27% (ISO 3451/4, Method A, 600 +/- 25 C) 3.3 MOLDED TEST SPECIMEN 3.3.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on injection molded one-
10、end gated test specimens. The following dimensions are required: A. 150 minimum x 10 x 4.0 +/- 0.2 mm (ISO 527-2, specimen 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. Spec
11、imens with shorter dimensions shall be cut from the center of the specimen A. No annealing allowed. 3.3.2 Density 1.26 - 1.35 g/cm3(ISO 1183, Method A) (s) 3.3.3 Tensile Strength at Max Load, min 83 MPa (ISO 527-1 150 x 10 x 4 mm specimen A). Test speed: 5 mm/minute. Provide a curve of tensile stres
12、s versus strain using one specimen per lot at each of the following temperatures: -40 C, 23 C and 80 C. For ductile materials, the curve shall cover strain through yield point. (s) 3.3.4 Flexural Modulus, min 3800 MPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) (s) 3.3.5 Impact
13、Strength, Izod, min (ISO 180/1A, 63.5 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.3.5.1 At 23 +/- 2 C 5.4 kJ/m23.3.5.2 At -40 +/- 1 C 4.5 kJ/m2The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. Low temperature testing
14、shall be done within the cold box, if not possible, test can be conducted outside, but within 5 s. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D947-B1 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 3 of 5 (s) 3.3.6 Charpy, notched, min (ISO 179/1eA, 80 x 10 x 4.0 +/-
15、0.2 mm specimen use center section of specimen A, 10 specimens 3.3.6.1 At 23 +/- 2 C 9 kJ/m23.3.6.2 At -40 +/- 2 C 4 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 chambe
16、r, if not possible, test may be conducted outside, but within 5 seconds. (s) 3.3.7 Heat Deflection Temperature, min 185 C (ISO 75-1 & 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 1.8 MPa) All specimens dry as molded. If not te
17、sted immediately after molding, specimens must be stored in a sealed, moisture-proof container filled with silica gel. 3.3.8 Heat Aging Performance (ISO 188, 150 +/- 50 air changes/h, 1000 h at 140 +/- 2 C. After heat aging test specimens are to be conditioned in a desiccator for 3 - 5 h at 23 +/- 2
18、 C. Unaged property values shall be determined at the time of the aged properties determination) 3.3.8.1 Tensile Strength at Max Load, Change +/- 25% (Test Method per para 3.3.3) 3.3.8.2 Impact Strength, Izod Change, max +/- 25% (Test Method per para 3.3.5, specimens to be notched before heat aging)
19、 3.4 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm (use specimen C) with a smooth surface. 3.5 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Number, min 90 F
20、ormation of clear film, droplets or crystals is cause for rejection. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D947-B1 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 4 of 5 3.6 WEATHERING RESISTANCE After exposure in accordance with para 3.6.1 and 3.6.2, the materia
21、l shall show no fading or 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. 3.6.1 Xenon Arc Weatherometer - Rating 4 Required Worldwide except North America (SAE J1885, 601 kJ/m e
22、xposure minimum, specimen size: 150 x 100 mm minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.6.2 Filtered Xenon Arc Weatherometer Rating 4 (SAE J 1885, modified (FLTM BO 116-01), 1203.2 kJ/m2exposure minimum, specimen size: 150 x 100 mm minimum, 3.2 +/- 0.2 mm thick, molded in smoot
23、h polished mold) 3.7 COEFFICIENT OF FRICTION, DYNAMIC, MAX 0.22 (ASTM D 1894) 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 MELT TEMPERATURE, MIN 225 C (ISO 3146, Method C, 10 C/minute heating ra
24、te) 4.2 COEFFICIENT OF LINEAR THERMAL EXPANSION Flow 2.1-5/C (ISO 11359-2 (TMA), -30 to 150 C) Across flow 14.6-5/C 4.3 MOLD SHRINKAGE (ISO 294-3 and 294-4, 60 x 60 x 2.0 +/- 0.1 mm injection molded specimen B) 4.2.1 Molding Shrinkage After 48 h at 23 +/- 2 C Flow 0.6% Across flow 0.7% 4.2.2 Post sh
25、rinkage (separate specimens required for each test) After 48 h at 80 C Flow 0.6% Across flow 0.7% After 30 minutes at 120 C Flow 0.6% Across flow 0.7% ENGINEERING MATERIAL SPECIFICATIONWSS-M4D947-B1 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 5 of 5 4.4 WATER A
26、BSORPTION 0.8% (ISO 62, 24 h immersion, 50 +/- 1 mm diameter, 3.2 +/- 0.2 mm thick specimen) 4.5 IMPACT STRENGTH, IZOD, (ISO 180/1A. 80 x 10 x 4.0 +/- 0.2 mm specimen. 10 specimen min.) After Moisture Conditioning 23 KJ/m2The notched specimen shall be immersed for 48 h in distilled water at 50 +/- 1
27、 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. 4.6 MODULUS OF ELASTICITY 6.4 GPa (ISO R 527-1 & ISO 527-2/ASTM D 638M, 150 min. x 10 x 4.0 +/- 0.2 mm specimen, 1 mm/minute test speed) 4.7 RECYCLING CODE per ISO 1043/ISO 11469 PA66-IGF25
