FORD-WSS-M4D595-A2-2005.pdf

ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2005 09 13 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.9, 3.10 & 4 1995 03 10 Activated K. Gerhards Printed copies are uncontrolled Copyright © 2005, Ford Global Technologies, LLC Page 1 of 5 POLYAMIDE 6 (PA 6), 40% GLASS FIBER REINFORCED WSS-M4D595-A2 MOLDING COMPOUND, EXTERIOR 1. SCOPE The material defined by this specification is a 40% glass fiber reinforced, UV stabilized, and impact modified molding compound based on a polyamide 6. 2. APPLICATION This specification was released originally for material used as door handles. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Company's Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1.1 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 B). Alll 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 Filler Content 37.5 - 42.5% (ISO 3451/1, test temperature 600 +/- 25 °C, test portion 1 g) (s) 3.4.2 Melt Temperature, min 205 - 215 °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 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 ENGINEERING MATERIAL SPECIFICATION WSS-M4D595-A2 Printed copies are uncontrolled Copyright © 2005, 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 be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.43 - 1.49 g/cm3 (ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Yield, min 150 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) (s) 3.5.4 Flexural Modulus, min 9.0 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 1.8 - 3.1 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 time at each temperature interval - 3 minutes minimum) Additionally, a Shear Modulus versus Temperature curve shall be plotted for -50 to +200 °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 23 +/- 2 °C 10 kJ/m2 3.5.6.2 At -40 +/- 1 °C 7 kJ/m2 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. (s) 3.5.7 Heat Deflection Temperature, min (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, edgewise, 0.32 +/- 0.01 mm deflection) 3.5.7.1 At 1.80 MPa 170 °C 3.5.7.2 At 0.45 MPa 190 °C ENGINEERING MATERIAL SPECIFICATION WSS-M4D595-A2 Printed copies are uncontrolled Copyright © 2005, Ford Global Technologies, LLC Page 3 of 5 (s) 3.5.8 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 Strength at Yield Max Change +/- 25% (Test Method per para 3.5.3) 3.6 FOGGING (FLTM BO 116-03, 3 h at 100 °C heating, 21 °C cooling plate) Fog Number, min 70 Formation of 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. 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 excess 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 (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 J1960, 600 kJ/m2 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 in smooth polished mold) ENGINEERING MATERIAL SPECIFICATION WSS-M4D595-A2 Printed copies are uncontrolled Copyright © 2005, 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, 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 2-5/ °C (ASTM E 831 (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 0.15 - 0.76% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 °C 0.02 - 0.06% . After 30 min at 120 °C 0.03 - 0.1% 5.3 WATER ABSORPTION 0.51% (ISO 62, 24 h immersion, 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 Moisture Conditioning 16 kJ/m2 The 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 PA6-GF40 ENGINEERING MATERIAL SPECIFICATION WSS-M4D595-A2 Printed copies are uncontrolled Copyright © 2005, Ford Global Technologies, LLC Page 5 of 5 -,-,-