1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 11 22 Revised Paragraph 3.8, 3.8.1 Added 3.8.3. L. Schmalz 2005 11 29 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.9, 3.10 & 4 1996 06 28 Activated M. Masserant Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, L
2、LC Page 1 of 5 POLYAMIDE (PA) 66, IMPACT MODIFIED, HEAT WSS-M4D706-A4 STABILIZED WEATHERABLE MOLDING COMPOUND 1. SCOPE The material defined by this specification is an ethylene copolymer modified, heat stabilized polyamide 66 molding compound. 2. APPLICATION This specification was released originall
3、y for material used for molded in color push pins. 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 speci
4、fication 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). 3.4 MOLDING COMPOUND 3.4.1 Melt Temperat
5、ure 250 - 265 C (ISO 1218, Method B/ASTM D 789) 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 Ba
6、r, 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 annealing allowed. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D706-A4 Printed copies are uncontrolle
7、d Copyright 2006, Ford Global Technologies, LLC Page 2 of 5 3.5.2 Density 1.08 - 1.12 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Yield, min 56 MPa (ISO R 527/ASTM D 638M, 150 x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/minute test speed) 3.5.3.1 Elongation at Yield, min 5% (
8、Test Method according to para 3.5.3) 3.5.4 Flexural Modulus, min 1.85 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.5.5 Shear Modulus at 23 C 0.67 - 1.01 GPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain l
9、evel 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 Modulus vs. Temperature curve shall be plotted for -50 to +240 C temperature range,
10、 at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 5. 3.5.6 Impact Strength, Izod, min (ISO 180/1A, 63.5 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 12 kJ/m23.5.6.2 At 0 +/- 2 C 11 kJ/m23.5.6.3 At -40 +/- 2 C 8.0 kJ/m2The t
11、est 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, if not possible, test can be conducted outside, but within 5 s. 3.5.7 Heat Deflection Temperature, min (ISO 75-1, 120 x 10 x 4.0 +/
12、- 0.2 mm specimen) 3.5.7.1 At 1.82 MPa 54 C 3.5.7.2 At 0.45 MPa 172 C ENGINEERING MATERIAL SPECIFICATIONWSS-M4D706-A4 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 5 3.5.8 Heat Aging Performance (ISO 188, 150 +/- 50 air changes/h, 1000 h at 130 +/- 2 C. Afte
13、r 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 +/- 25% Load, Change (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod -3
14、5% Change, max (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 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. 3.7 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C c
15、ooling plate, post test conditioning 1 h) Fog Number, min 90 Formation of clear film, droplets or crystals is cause for rejection. 3.8 WEATHERING RESISTANCE After exposure in accordance with para 3.8.1, 3.8.2, and 3.8.3, the material shall show no fading or color change in excess of specified Gray S
16、cale 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 with mild detergents and water (ratio 5:95 by volume), or e
17、quivalent, after the Florida exposure. All initial approvals will be based on the preliminary Weatherometer exposure, pending Florida exposure results for final approval-Not required for North America. 3.8.1 Xenon Arc Weatherometer Required Worldwide except North America Rating 4 (SAE J1885, 601.6 k
18、J/m2exposure minimum, specimen size: 150 x 100 mm minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D706-A4 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 5 3.8.2 12 months Florida Not required for North Am
19、erica Rating 4 (FLTM BI 160-01, 5 south, under glass*, specimen size: 150 x 100 mm, minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) *PPG Herculite K, tempered safety glass, 3 mm thick. 3.8.3 Filtered Xenon Arc Weatherometer Rating 4 Required for North America (SAE J 1885, modified (FL
20、TM BO 116-01), 1230.2 kJ/m2exposure min, specimen size: 150 x 100 mm min, 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
21、 THERMAL EXPANSION 7 - 9-5/ C (ASTM D 696) 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 1.2 - 1.8% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.05 - 0.20% . Af
22、ter 30 minutes at 120 C 0.20 0.30% 5.3 WATER ABSORPTION 0.75 - 1.10% (ISO 62, 24 h/ASTM D 570, 24 h, 50 +/- 1 mm diameter, 3.2 +/- 0.2 mm thick specimen) 5.4 IMPACT STRENGTH, IZOD, min (ISO 180, Method A/ASTM D 256, Method A, 63.5 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens minimum) 5.4.1 After Moi
23、sture Conditioning 25 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 ENGINEERING MATERIAL SPECIFICATIONWSS-M4D706-A4 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 5
