1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2016 01 20 N Status Replaced by WSS-M4D716-B1 R. Harris, NA 2005 12 12 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8 Completely Updated L. Graham 1990 08 01 Released EP00E01031538000 M. Siewert Copyright 2016, Ford Global Technologies
2、, LLC Page 1 of 4 POLYETHERIMIDE (PEI) MOLDING COMPOUND, WSK-M4D716-A SELF-EXTINGUISHING NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a long term high heat resistant polyetherimide (PEI) molding compound. This material exhibits high dimensional stability and e
3、xcellent electrical properties. This material is self-extinguishing (SE) without flame retardant additives. 2. APPLICATION This specification was released originally for material used for the fuse box. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part pro
4、ducers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDED TEST SPECIMEN 3.4.1 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 r
5、equired: 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 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. 3.4.2 Density 1.24 - 1.33
6、 (ISO 1183, Method A/ASTM D 792, g/cm3 Method A1) 3.4.3 Tensile Strength at Yield, min 100 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/ minute test speed) 3.4.3.1 Elongation at Yield, min 5% (Test Method according to para 3.4.3) ENGINEERING MATERIAL SPECIFICATION WSK-M4
7、D716-A Copyright 2016, Ford Global Technologies, LLC Page 2 of 4 3.4.4 Flexural Modulus, min 3.0 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.4.5 Shear Modulus at 23 C 0.91 - 1.37 GPa (ASTM D 4065, forced constant amplitude, fixed frequenc
8、y 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 vs. Temperature curve shall be plotted for -50 to
9、 +220 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 4. 3.4.6 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.4.6.1 At 23 +/- 2 C 2.5 kJ/m2 3.4.6.2 At -
10、40 +/- 2 C 2.7 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, if not possible, test can be conducted outside, but within 5 s. 3.4.7 Heat Deflection Temperature, min 17
11、7 C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen. At 1.82 MPa) 3.4.8 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 180 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.4.8.1 Tensile Strength at Yield C
12、hange +/- 25% (Test Method per para 3.4.3) 3.4.8.2 Impact Strength, Izod Change +/- 25% (Test Method per para 3.4.6.1, specimens to be notched before heat aging) ENGINEERING MATERIAL SPECIFICATION WSK-M4D716-A Copyright 2016, Ford Global Technologies, LLC Page 3 of 4 3.5 FLAMMABILITY (ISO 3795) Burn
13、 Rate, max 0 mm/minute (SE) The specimen size required for material approval is 355 x 100 x 0.5 +/- 0.1 mm with a smooth surface. 3.6 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h) Fog Number, min 85 Formation of clear film, droplets or crystals is cause fo
14、r rejection. 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 4 - 6-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injecti
15、on molded specimen) 5.2.1 Molding Shrinkage After 48 h at 23 +/- 2 C 0.40 - 0.80% 5.3 WATER ABSORPTION 0.20 - 0.50% (ISO 62, 24 h/ASTM D 570, 24 h, 50 +/- 1 mm diameter, 3.2 +/- 0.2 mm thick specimen) 5.4 MOISTURE CONTENT FOR MOLDING MATERIAL (ISO 960, Method B/ASTM D 789) If the moisture content exceeds 0.02% value, the molding compound requires predrying. ENGINEERING MATERIAL SPECIFICATION WSK-M4D716-A Copyright 2016, Ford Global Technologies, LLC Page 4 of 4
