1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 05 04 N-STATUS Replaced by WSB-M4D678-A A. Reaume/M. Masserant 2006 02 15 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.8, 3.9 & 4 1991 01 31 Released DE00E00107002086 J.B. Huebner Printed copies are uncontrolled Copyright 2006, Ford Global T
2、echnologies, LLC Page 1 of 4 POLYAMIDE (PA) 66, 35% LONG GLASS FIBER WSF-M4D786-A REINFORCED, HEAT STABILIZED, IMPACT MODIFIED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is long glass fiber reinforced, heat stabilized, high impact polyamide 66
3、molding compound. 2. APPLICATION This specification was released originally for material used for the starter motor sleeve. 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
4、 loss in the service/assembly environment. 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). 3.3 CONDITIONING AND TEST CONDITIONS All test values indic
5、ated herein are based on material and specimens with moisture content not exceeding 0.2% (test according to ISO 960, Method B/ASTM D 789). 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%, condit
6、ion the material for a minimum of 16 h at 40 - 50 C at a reduced pressure below 133 Pa. Conduct tests in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5% relative humidity. Individual specimens shall not be removed from closed containers until immediately before testing. 3.4 MOLDING COMPOUND 3.4.
7、1 Glass Fiber Content 33 - 37% (ISO 3451/4, test temperature 600 +/- 25 C) 3.4.2 Melt Temperature 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
8、specimens. ENGINEERING MATERIAL SPECIFICATIONWSF-M4D786-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 4 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 Specimens with shorter dime
9、nsions 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 1.39 - 1.44 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, min 165 MPa (ISO R 527/ASTM D 638M, 1
10、50 x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/minute test speed) 3.5.4 Flexural Modulus, min 7.6 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 1.25 - 2.10 GPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1
11、 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 +240
12、C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 4. 3.5.6 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) 3.5.6.1 At 23 +/- 2 C 18.5 kJ/m23.5.6.2 At -40 +
13、/- 2 C 14.5 kJ/m2The 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. 3.5.7 Heat Deflection Temperature, min (ISO 7
14、5/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen) 3.5.7.1 At 1.82 MPa 242 C 3.5.7.2 At 0.45 MPa 245 C 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 150 +/- 2 C. After heat aging test specimens are to be conditioned in a desiccator for 3 - 5 h at 23 +/- 2 C. Un
15、aged property values shall be determined at the time of the aged properties determination) ENGINEERING MATERIAL SPECIFICATIONWSF-M4D786-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 4 3.5.8.1 Impact Strength, Izod Change +/- 15% (Test Method per para 3.5.6
16、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 1.5 +/- 0.1 mm with a smooth surface. 3.7 FOGGING (FLTM BO 116-03) Fog Number, min 60 Formation of excessive amounts of clear film o
17、r droplets is cause for 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 2.1-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.
18、2 +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 0.4% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.4% . After 30 minutes at 120 C 0.3% 5.3 WATER ABSORPTION 0.7% (ISO 62, 24 h/ASTM D 570, 24 h, 50 +/- 1 mm diameter,
19、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 20 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. ENGINEERING MATERIAL SPECIFICATIONWSF-M4D786-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 4
