1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 20 N-STATUS No replacement named J. Crist, NA 2006 05 31 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.9, 3.10 & 4 1993 12 01 Released EP00E10258833000 K. Gerhards Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, L
2、LC Page 1 of 5 POLYAMIDE 12 (PA 12) COPOLYMER, AMORPHOUS WSK-M4D890-A1 MOLDING COMPOUND, EXTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a UV stabilised, amorphous molding compound based on a copolymer of polyamide 12 with partial aromatic content. 2. AP
3、PLICATION This specification was released originally for material used as door lock IR receiver. 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.
4、1 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 Transitio
6、n Temperature 155 - 165 C (ASTM D 3418, DSC) 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 mm (Tensile Bar,
7、ISO 3167) B. 120 x 10 x 4.0 +/- 0.2 mm ENGINEERING MATERIAL SPECIFICATIONWSK-M4D890-A1Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 5 Specimens with shorter dimensions shall be cut from the center portion of the test specimen A and/or B. The specimens shall
8、be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.04 - 1.07 g/cm (ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Yield, min 75 MPa (ISO 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) (s) 3.5.3.1 Elongation at Yield, min 6% (Test Method according to pa
9、ra 3.5.3) (s) 3.5.4 Flexural Modulus, min 2.0 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 700 - 1050 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen approx. 60 x 10
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 Modulus versus Temperature curve shall be plotted for -50 to +150 C temperature range, at 5 C minimum intervals. The plotted
11、 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 23 +/- 2 C 3.5 kJ/m 3.5.6.2 At -40 +/- 1 C 3.5 kJ/mThe test specimens must be conditioned for minimum of 6 h at the above
12、 specified temperature prior to impact test. Low temperature testing shall be done within the cold box. (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 122 C 3.5.7.2 At 0.45 MPa 140 C ENGINEERING MATERIAL SPECIF
13、ICATIONWSK-M4D890-A1Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 5 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
14、. 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 FOGGING (FLTM BO 116-03, 3 h at 100 C) Fog Number, min 90 Formation of clear film, droplets, or crystals is cause for re
15、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. 3.8 WEATHERING RESISTANCE After exposure in accordance with 3.8.1, 3.8.2, and 3.8.3, the material shall show no color change in exce
16、ss of specified Gray Scale rating (AATCC Evaluation Procedure 1/ISO 105-A02). In addition, there shall be 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
17、 (auto wax) after the outdoor exposure, at permission of the affected Product Development Materials Activity. 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 4 (SAE J1
18、960, 600 kJ/m exposure minimum, specimen size: 150 x 100 mm minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.8.2 12 months Florida Rating 4 12 months Arizona (NAAO only) (SAE J1976, 5 south,direct weathering inland, specimen size: 150 x 100 mm, minimum, 3.2 +/- 0.2 mm thick, molded i
19、n smooth polished mold) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D890-A1Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 3.8.3 24 months Florida Rating 3-4 24 months Arizona (NAAO only) (SAE J1976, 5 south, direct weathering inland, specimen size: 150 x 100 mm
20、, minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 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 THERMAL EXPANSION 6 9-5/ C (ASTM E 228 or TMA, temperature ran
21、ge -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 0.65 - 0.85% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.0 - 0.1% . After 30 min at 120 C 0.0 - 0.1% 5.3 WATER ABSORPTION 0.38 - 0.48% (ISO 62, 24 h immersion, 50 +/- 1 mm diameter, 3.2 +/- 0.2 mm thick specimen) 5.4 RECYCLING CODE PA 12 ENGINEERING MATERIAL SPECIFICATIONWSK-M4D890-A1Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5
