1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 05 02 N-STATUS Replaced WSK-M4D719-A with WSK-M4D823-A A. Reaume/M. Masserant 2005 12 08 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1990 11 02 Released EP00E01031541000 M. Siewert Printed copies are uncontrolled Copyright 2
2、006, Ford Global Technologies, LLC Page 1 of 4 POLYAMIDE (PA) 66, 38% GLASS FIBER/MINERAL NOT TO BE USED FOR NEW DESIGN WSK-M4D719-A REINFORCED MOLDING COMPOUND POLYAMIDE (PA) 66, 38% GLASS FIBER/MINERAL WSS-M4D719-A2 REINFORCED MOLDING COMPOUND, 25% POST CONSUMER MINERAL FILLED NYLON 1. SCOPE The m
3、aterial defined by these specifications is a 10% glass fiber and 28% mineral reinforced polyamide 66 molding compound. 2. APPLICATION These specifications were released originally for material used for engine cooling fan and fan shroud. NOTICE: This material absorbs and retains moisture. Part design
4、 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 MATERIALS Material suppliers and part producers must conform to the Companys Standard R
5、equirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Glass Fiber/Mineral Content 34 - 40% (ISO 3451/4, test temperature 600 +/- 25 C, test portion 1 g) 3.4.2 Melt Temperature 250 - 265 C (ISO 1218, Method B/ASTM D 789, or DSC-ASTM E 794) 3.5 MOLDED TEST SPECIMEN 3.5.1 Pr
6、eparation 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 Specimens with shorter dimensions shall
7、 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 SPECIFICATIONWSK-M4D719-A WSS-M4D719-A2 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 4 3.5.2 De
8、nsity 1.42 - 1.50 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, min 95 MPa (ISO R 527/ASTM D 638M, 150 x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/minute test speed) 3.5.4 Flexural Modulus, min 5.7 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2
9、mm specimen, 2 mm/minute test speed, 64 mm support span, the radius of the loading nose 5.0 +/- 0.1 mm) 3.5.5 Shear Modulus at 23 C 1.65 - 2.80 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
10、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 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance ra
11、nge shown on page 4. 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 +/- 2 C 2.6 kJ/m23.5.6.2 At -40 +/- 2 C 2.5 kJ/m2The test specimens must be conditioned for minimum of 6 h at the above specifie
12、d 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 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen, at standard deflection of 0.32 +/- 0.01 mm) 3.
13、5.7.1 At 1.82 MPa 195 C 3.5.7.2 At 0.45 MPa 235 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
14、 of the aged properties determination) 3.5.8.1 Impact Strength, Izod Change +/- 25% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D719-A WSS-M4D719-A2 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Pag
15、e 3 of 4 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 (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h) Fog Number, min 90 Formation of clear
16、film, droplets or crystals is cause for rejection. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of these specifications. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 3 5-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, appr
17、ox. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 0.4 - 1.0% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.08 - 0.20% . After 30 minutes at 120 C 0.15 0.30% 5.3 WATER ABSORPTION 0.4 - 0.9% (ISO 62, 2
18、4 h/ASTM D 570, 24 h, 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, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens minimum) 5.4.1 After Moisture Conditioning 8 kJ/m2The notched specimens shall be immersed for 48 h in dis
19、tilled 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 PA66-(GF+M)38 OPTIONAL PA66-(GF+M)38 ENGINEERING MATERIAL SPECIFICATIONWSK-M4D719-A WSS-M4D719-A2 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 4
