1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 12 N-STATUS No replacement named J. Crist, NA 2005 12 08 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.8, 3.9 & 4 1990 02 01 Released C 01031532 M. Siewert Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page
2、1 of 5 POLYAMIDE (PA) 46, HEAT STABILIZED 30% GLASS WSK-M4D715-A FIBER REINFORCED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a glass fiber reinforced polyamide 46 molding compound prepared by polycondensation of diamino-butane and adipic aci
3、d and stabilized against hot lubricants. 2. APPLICATION This specification was released originally for material used for support and adapter of automatic transmission. NOTICE: This material absorbs and retains moisture. Part design and tolerances must accommodate changes in part dimensions and physi
4、cal properties due to moisture absorption or loss in the service/assembly environment. 3. REQUIREMENT Material specification requirements are to be used for initial qualification of materials. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to th
5、e Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.3 CONDITIONING AND TEST CONDITIONS All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5% relative humidity for not less than 24 h prior to testing and tes
6、ted under the same conditions unless otherwise specified. 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 1
7、33 Pa. 3.4 MOLDING COMPOUND 3.4.1 Glass Fiber Content 28 - 32% (ISO 3451/4, test temperature 600 +/- 25 C, test portion 1 g) 3.4.2 Melt Temperature 290 - 295 C (ISO 1218, Method B/ASTM D 789 or DSC - ASTM E 794) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D715-A Printed copies are uncontrolled Copyright
8、 2010, Ford Global Technologies, LLC Page 2 of 5 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 specimens. The following dimensions are required: A. 150 min x 10 x 4.0 +/- 0.2 mm (Tensile B
9、ar, 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. 3.5.2 Density 1.36 - 1.42 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3.5
10、.3 Tensile Strength at Max Load, min 180 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 8.5 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 1.44 -
11、2.40 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 center of specimen A. Specimen length between clamps 35-40 mm. Soak time at each temperature interval - 3 minutes minimum). Additionally, a
12、 Shear Modulus vs. Temperature curve shall be plotted for -50 to +280 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 specim
13、ens for each test) 3.5.6.1 At 23 +/- 2 C 8 kJ/m23.5.6.2 At -40 +/- 2 C 7 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,
14、but within 5 s. ENGINEERING MATERIAL SPECIFICATIONWSK-M4D715-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 5 3.5.7 Heat Deflection Temperature, min (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen) 3.5.7.1 At 1.82 MPa 280 C 3.5.7.2 At 0.45 MPa 280 C
15、3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 160 +/- 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) 3.5.8.1 Imp
16、act Strength, Izod Change +/- 15% (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 (SAE J 1756, 3 h at 1
17、00 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Number, min 90 Formation of clear 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 this specific
18、ation. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 1.7 - 2.5-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage After 48 h at 23 +/- 2 C 0.3 - 1.5% 5.2.2 Post Shrinkage (Separate specimens required for each test) Afte
19、r 48 h at 80 C 0.01 - 0.02% After 30 minutes at 120 C 0.02 - 0.03% ENGINEERING MATERIAL SPECIFICATIONWSK-M4D715-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 5.3 WATER ABSORPTION 1.3 - 1.8% (ISO 62, 24 h/ASTM D 570, 24 h, 50 +/- 1 mm diameter, 3.2 +/- 0.
20、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 15 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 SPECIFICATIONWSK-M4D715-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5
