1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 11 05 N-STATUS Replaced by SDS and USCAR requirements. A. Pan, APA 2006 06 26 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.8, 3.9 & 4 1994 04 05 Released EP00E10348585000 K. Gerhards Printed copies are uncontrolled Copyright 2010, Ford Globa
2、l Technologies, LLC Page 1 of 5 POLYAMIDE 12 (PA12), HEAT STABILIZED WSK-M4D892-A1 20% GLASS FIBER REINFORCED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a heat stabilized 20% glass fiber reinforced type 12 polyamide molding compound. 2. APPL
3、ICATION This specification was released originally for material used for quick fit connectors. 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
4、All requirements of this specification, identified 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 and specimens with moisture content not exceeding 0.2% (test according to ISO 960, Method
5、B). All test materials immediately after processing 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 Glass Fiber Cont
6、ent 18 - 22% (ISO 3451/4, test temperature 600 +/- 25 C, test portion 1 g) (s) 3.4.2 Melt Temperature, min 175 - 185 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 molde
7、d one-end gated test specimens. ENGINEERING MATERIAL SPECIFICATIONWSK-M4D892-A1Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 5 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 Specim
8、ens 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 annealing allowed. 3.5.2 Density 1.14 - 1.17 g/cm (ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Yield, min 100 MPa (ISO R 527, 150 minimum x
9、 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed, (s) 3.5.3.1 Elongation at Yield, min 3% (Test Method according to para 3.5.3) (s) 3.5.4 Flexural Modulus, min 4.4 GPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 64 mm support span) 3.5.5 Shear Modulus at 23 C 920 - 1380 MPa
10、(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 temperature interval - 3 minutes minimum) Additionally, a Shear Mod
11、ulus versus Temperature curve shall be plotted for -50 to +180 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 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At
12、23 +/- 2 C 15 kJ/m 3.5.6.2 At -40 +/- 1 C 7 kJ/m The 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 MATERIAL SPECIFICATIONWSK-M4D892-A1Printed copies are uncontrolle
13、d 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 155 C 3.5.7.2 At 0.45 MPa 170 C 3.5.8 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h,
14、 1000 h at 130 +/- 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 Strength at Max Load Change +/- 25% (Test Method per para 3.5.3) 3.6 F
15、OGGING (FLTM BO 116-03, 3 h at 100 C) Fog Number, min 60 Formation of a clear film, droplets or crystals is cause for rejection. 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 I
16、NFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 2 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.
17、2 mm injection molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 0.15 - 0.25% ENGINEERING MATERIAL SPECIFICATIONWSK-M4D892-A1Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 5.2.2 Post Shrinkage (Separate specimens required for each test) .
18、After 48 h at 80 C 0 - 0.05% . After 30 min at 120 C 0 - 0.05% 5.3 WATER ABSORPTION 0.1 - 0.22% (ISO 62, 24 h immersion, 50 +/- 1 mm diameter, 3.2 +/- 0.2 mm thick specimen) 5.4 RECYCLING CODE PA12-GF20 ENGINEERING MATERIAL SPECIFICATIONWSK-M4D892-A1Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5
