1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 12 N-STATUS No replacement named J. Crist, NA 2005 11 30 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.8, 3.9 & 4 1989 11 17 Released SM/EQ9856 TP M. Siewert Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Pag
2、e 1 of 5 POLYAMIDE 66 (PA66), 40% MINERAL FILLED WSK-M4D704-A2 IMPROVED IMPACT STRENGTH MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 40% mineral filled polyamide 66 molding compound. 2. APPLICATION This specification was released originally
3、for material used for switch sockets. 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. REQUIREMENTS Material specification requ
4、irements 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). 3.1.1 All requirements of this specification, identif
5、ied by symbol (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 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 u
6、nder the same conditions unless otherwise specified. 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 to be sealed in containers that are impermeab
7、le 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 Mineral Content 36.5 - 41.5% (ISO 3451/4, 600 +/- 25 C) (s) 3.4.2 Melt Temperature, min 250 C (ISO 3146, Method C, 10
8、C/min heating rate) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D704-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 5 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
9、-end gated test specimens. 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
10、 ISO 294. No annealing allowed. 3.5.2 Density 1.39 - 1.53 g/cm3(ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Max Load, min 70 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 4.7 GPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm
11、/min test speed, 64 mm support span) 3.5.5 Shear Modulus at 23 C 1.62 - 2.70 GPa (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
12、 time at each temperature interval - 3 minutes minimum) Additionally, a Shear Modulus versus Temperature curve shall be plotted for -50 to +240 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 1
13、80/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 3.9 kJ/m23.5.6.2 At -40 +/- 2 C 2.8 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 col
14、d box. ENGINEERING MATERIAL SPECIFICATIONWSK-M4D704-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC 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 62 C 3.5.7.2 At 0.
15、45 MPA 200 C 3.5.8 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 110 +/- 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.
16、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 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Number, min 75 Formation of clear film, droplets or crystals is cause for re
17、jection. 3.7 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 with a smooth surface. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this
18、specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 5-5/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 - 1.1% 5.2.2 Post Shrinkage (Separate
19、specimens required for each test) After 48 h at 80 C 0.01 - 0.2% After 30 min at 120 C 0.15 - 0.4% ENGINEERING MATERIAL SPECIFICATIONWSK-M4D704-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 5.3 WATER ABSORPTION 0.8 - 1.1% (ISO 62, 24 h immersion, 50 +/-
20、 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, 10 specimens minimum) 5.4.1 After Moisture Conditioning 12 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-M40 ENGINEERING MATERIAL SPECIFICATIONWSK-M4D704-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5
