1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 04 28 N-STATUS No replacement named A. Reaume/M. Masserant 2005 10 26 Revised Format Updated 2002 12 05 Activated M. Masserant, M. Siewert Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 3 POLYAMIDE
2、 (PA) 66, HEAT STABILIZED 33% WSS-M4D663-A2 GLASS FIBER REINFORCED, LASER MARKABLE NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a glass fiber reinforced, heat stabilized, laser markable polyamide 66 molding compound. 2. APPLICATION This specification was relea
3、sed originally for material used for the PCV valve. 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 3.1 STANDARD
4、REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 MOLDING COMPOUND 3.2.1 Glass Fiber Content 31 - 35% (ISO 3451/4, test temperature 600 +/-25 C, test portion 1 g) 3.2.2 Melt Te
5、mperature 250 - 265 C (ISO 1218, Method B/ASTM D 789) 3.3 MOLDED TEST SPECIMEN 3.3.1 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 (Tens
6、ile 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 ISO 294. No annealing allowed. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D663-A2 Printed copies are uncon
7、trolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 3 3.3.2 Density 1.37 - 1.43 g/cm (ISO 1183, Method A/ASTM D 792, Method A1) 3.3.3 Tensile Strength at Max Load, min 150 MPa (ISO R 527/ASTM D 638M, 150 x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/minute test speed) 3.3.4 Flexural Modulus, min
8、8.0 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.3.5 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 for each test) 3.3.5.1 At 23 +/- 2 C 4.0 kJ/m 3.3.5.2 At -40 +/- 2 C
9、4.0 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, if not possible, test can be conducted outside, but within 5 s. 3.3.6 Heat Deflection Temperature, min (ISO 75/ASTM D
10、 648, 120 x 10 x 4.0 +/- 0.2 mm specimen) 3.3.6.1 At 1.82 MPa 235 C 3.3.6.2 At 0.45 MPa 250 C 3.3.7 Heat Aging Performance (ISO 188/ASTM D 573, 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 pro
11、perty values shall be determined at the time of the aged properties determination) 3.3.7.1 Impact Strength, Izod Change +/- 25% (Test Method per para 3.5.5.1, specimens to be notched before heat aging) 3.4 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material a
12、pproval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D663-A2 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 3 3.5 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h
13、) Fog Number, min 90 Formation of clear film, droplets or crystals is cause for rejection. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 2.4 - 4.0-5/ C (AS
14、TM D 696) 4.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 4.2.1 Molding Shrinkage After 48 h at 23 +/- 2 C 0.2 - 1.5% 4.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C 0.01 - 0.08% After 30 minutes at 120 C 0.01 - 0.10% 4.
15、3 WATER ABSORPTION 0.70 - 1.1% (ISO 62, 24 h/ASTM D 570, 24 h, 50 +/- 1 mm diameter, 3.2 +/- 0.2 mm thick specimen) 4.4 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) 4.4.1 After Moisture Conditioning 13 kJ/m 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.
