1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 04 28 N-STATUS Replaced by WSK-M4D654-A2 A. Reaume/M. Masserant 2005 10 25 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.7, 3.8 & 4 1989 07 03 Released SM/EQ24042 TP M. Siewert Printed copies are uncontrolled Copyright 2006, Ford Global Techn
2、ologies, LLC Page 1 of 4 POLYAMIDE (PA) 66, HEAT STABILIZED 40% GLASS WSK-M4D654-A SPHERE REINFORCED NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a glass sphere reinforced, heat stabilized polyamide 66 molding compound. 2. APPLICATION This specification was re
3、leased originally for material used for the tyre of idler timing belt. 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. REQUIRE
4、MENTS 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 the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.3 CONDITIONING AND
5、 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 tested under the same conditions unless otherwise specified. All test values indicated herein are b
6、ased on material and specimens with moisture content not exceeding 0.2% (test according to ISO R 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 materia
7、l 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 3.4.1 Glass Fiber C
8、ontent 37.5 - 42.5% (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) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D654-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 4 3.5 MOLDED TEST
9、 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 Bar, ISO 3167) B. 120 x 10 x 4.0 +/- 0.2 mm Specimens with shorte
10、r 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 1.43 - 1.50 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 63
11、8M, 150 x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/minute test speed) 3.5.4 Flexural Modulus, min 4.0 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.5.5 Shear Modulus at 23 C 1.55 - 2.59 GPa (ASTM D 4065, forced constant amplitude, fixed frequency
12、 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. 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 range s
13、hown on page 5. 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 2.0 kJ/m 3.5.6.2 At -40 +/- 2 C 1.5 kJ/m The test specimens must be conditioned for minimum of 6 h at the above specified te
14、mperature 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. ENGINEERING MATERIAL SPECIFICATIONWSK-M4D654-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 4 3.5.7 He
15、at 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 80 C 3.5.7.2 At 0.45 MPa 215 C 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 1000 h at 130 +/- 2 C. After heat aging test specimens are to be conditioned in a desiccator for 3 5 h at 23 +/-
16、 2 C. Unaged property values shall be determined at the time 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) 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size require
17、d for material approval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. 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 5 - 8-5/C (ASTM D 696) 5.2 MOLD
18、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 1.0 - 1.6% 5.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C 0.05 - 0.30% After 30 minutes at 120 C 0.05 - 0.30% 5.3 WATER ABSORPTION
19、0.6 - 0.8% (ISO 62, 24 h/ASTM D 570, 24 h, 50 +/- 1 mm diameter, 3.2 +/- 0.2 mm thick specimen) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D654-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 4 5.4 IMPACT STRENGTH, IZOD, min (ISO 180, Method A/ASTM D 256, Metho
20、d A, 63.5 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens minimum) 5.4.1 After Moisture Conditioning 5 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.
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