1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 05 04 N-STATUS Replaced by WSK-M4D653-A; Inserted 3.0; Deleted 3.1, 3.2, 3.8, 3.9 & 4 A. Reaume/M. Masserant 2001 06 22 Revised Updated A. Cockman 1993 08 02 Released EP00E10258823000 K. Gerhards Printed copies are uncontrolled Copyright
2、2006, Ford Global Technologies, Inc. Page 1 of 5 POLYAMIDE 66 (PA66), 20% ARAMID FIBER WSK-M4D877-A REINFORCED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 20% aramid fiber reinforced polyamide 66 molding compound. 2. APPLICATION This specif
3、ication was released originally for material used for door checkarm. 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 loss in the service/assembly environment. 3. REQUIREME
4、NTS Material specification requirements are to be used for initial qualification of materials. 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). 3.3 CONDITIONING AND T
5、EST CONDITIONS All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5% relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. All test materials immediately after pro
6、cessing have to be sealed in containers that are impermeable to water vapor. If the moisture content exceeds 0.2%, condition the material for a minimum of 16 h at 40 - 50 C at a reduced pressure below 133 Pa. 3.4 MOLDING COMPOUND (s) 3.4.1 Filler Content 17.5 - 22.5% (1.0 +/- 0.1 g of molding compou
7、nd is weighed to +/- 0.001 g. The PA66 is digested in 50 mL of boiling 1:1 nitric acid/demineralized water solution. The remaining aramid fibers are washed with water and acetone, dried at 110 C under vacuum and weighed) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D877-A Printed copies are uncontrolled
8、Copyright 2006, Ford Global Technologies, Inc. Page 2 of 5 (s) 3.4.2 Melt Temperature, min 250 C (ISO 3146, Method C, 10 C/min heating rate) 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 s
9、pecimens. 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 from the center portion of the test specimen A and/or B. The specimens shall be prepared according to ISO 294. No anne
10、aling allowed. 3.5.2 Density 1.16 - 1.22 g/cm3(ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Yield, min 95 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/-0.2 mm specimen, 5 mm/min test speed) (s) 3.5.4 Flexural Modulus, min 3.9 GPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 64
11、mm support span) 3.5.5 Shear Modulus at 23 C 1450 - 1940 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. Specimen length between clamps 35-40 mm. Soak time at each temper
12、ature interval - 3 minutes minimum) Additionally, a Shear Modulus versus Temperature curve shall be plotted for -50 to +250 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 5. (s) 3.5.6 Impact Strength, Izod, min (ISO 180/1A, 80 x 10 x 4.0
13、 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 4.5 kJ/m23.5.6.2 At -40 +/- 2 C 3.5 kJ/m2The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold box. ENGINEERING M
14、ATERIAL SPECIFICATIONWSK-M4D877-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, Inc. Page 3 of 5 (s) 3.5.7 Heat Deflection Temperature, min (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, 0.32 +/- 0.01 mm deflection) 3.5.7.1 At 1.80 MPa 185 C 3.5.7.2 At 0.45 MPa 230 C 3.5.8
15、Heat Aging Performance (ISO 188, except 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 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.8.1 Tensile Stren
16、gth at Max Load Change +/- 25% (Test Method per para 3.5.3) heat aging) 3.6 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 Formation of clear film, droplets or crystals is cause for rejection. 3.7 FLAMMABILITY (ISO 3795) Burn Rat
17、e, 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. 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 THER
18、MAL EXPANSION 0.6-5/ C (ASTM E 228 or TMA, temperature range -30 to +30 C) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage After 48 h at 23 +/- 2 C 0.8 - 1.5% ENGINEERING MATERIAL SPECIFICATIONWSK-M4D877-A Printed copies are uncontr
19、olled Copyright 2006, Ford Global Technologies, Inc. Page 4 of 5 5.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C 0.03 - 0.1% After 30 min at 120 C 0.03 - 0.1% 5.3 WATER ABSORPTION 0.8 - 1.2% (ISO 62, 24 h immersion, 50 +/- 1 mm diameter, 3.2 +/- 0.2 mm thick speci
20、men) 5.4 IMPACT STRENGTH, IZOD, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens minimum) 5.4.1 After Moisture Conditioning 9.0 kJ/m2The 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 RECYCLING CODE PA66-RF20 ENGINEERING MATERIAL SPECIFICATIONWSK-M4D877-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, Inc. Page 5 of 5
