1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 25 N-STATUS No replacement named J. Crist, NA 2006 05 18 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.8, 3.9 & 4 1992 09 01 Released EP00E10176304000 K. Gerhards Printed copies are uncontrolled Copyright 2010 Ford Global Technologies, LLC
2、 Page 1 of 5 POLYAMIDE 6 (PA6), 30% MINERAL REINFORCED WSK-M4D849-A MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 30% mineral reinforced polyamide 6 molding compound. 2. APPLICATION This specification was released originally for material used
3、 for wheel trim cover. 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 3.0 STANDARD REQUIREMENTS FOR PRODUCTION M
4、ATERIALS 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 indicated herein are based on material and specimens with moisture content not exceeding 0.2% (test accord
5、ing 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%, condition the material for a minimum of 16 h at 40 - 50 C at a reduced pressure below 133 Pa. Conduct tests
6、 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 3.4.1 Mineral Content 27 - 33% (ISO 3451/4, test temperature 600 +/- 25 C, test portion 1 g) 3.4.2 Melt T
7、emperature 215 - 225 C (ISO 1218, Method B/ASTM D 789, or DSC - ASTM E 794) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D849-APrinted copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 5 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified
8、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 Specimens with shorter dimensions shall be cut from the center portion of the test specimen A
9、and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.30 - 1.40 g/cm (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, min 70 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/minute test speed) 3.5.4
10、 Flexural Modulus, min 3.2 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 64 mm support span, the radius of the loading nose 5.0 +/- 0.1 mm and of the supports 2.0 +/- 0.2 mm) 3.5.5 Shear Modulus at 23 C 1.5 - 2.5 GPa (ASTM D 4065, forced con
11、stant 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 vs. Temperature cur
12、ve shall be plotted for -50 to +240 C temperature range, 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, Method A/ASTM D 256, Method A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23
13、+/- 2 C 2.3 kJ/m 3.5.6.2 At -40 +/- 2 C 2.1 kJ/mENGINEERING MATERIAL SPECIFICATIONWSK-M4D849-APrinted copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 5 The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. L
14、ow 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/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen, at standard deflection of 0.32 +/- 0.01 mm) 3.5.7.1 At 1.82 MPa 60 C 3.5.7.2 At 0.4
15、5 MPa 180 C 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 110 +/- 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)
16、 3.5.8.1 Impact Strength, Izod Change +/- 25% (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 (FLTM BO
17、116-03) Fog Number, min 90 Formation of excessive amounts of clear film or 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 4
18、.5 - 5.5-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D849-APrinted copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 5 5.2.1 Molding Shrinkage . After 48 h at 23 +/
19、- 2 C 0.8 - 1.2% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.25 - 0.40% . After 30 min. at 120 C 0.30 - 0.50% 5.3 WATER ABSORPTION 0.8 - 1.4% (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, mi
20、n (ISO 180, Method A/ASTM D 256, Method A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens minimum) 5.4.1 After Moisture Conditioning 9 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. 5.5 RECYCLING CODE SAE or PA6-M30 PA6-M30 OPTIONAL ENGINEERING MATERIAL SPECIFICATIONWSK-M4D849-APrinted copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 5
