1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2005 12 07 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.9, 3.10 & 4 1990 09 03 Released EP00E01031539000 L. Rodigas Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 1 of 5 THERMOPLASTIC POLYESTER ETHER ELAST
2、OMER (TEEE), WSK-M4D720-A 50 DUROMETER D HARDNESS MOLDING COMPOUND 1. SCOPE The material defined by this specification is a rigid thermoplastic polyester ether elastomer (TEEE), 50 durometer D hardness. 2. APPLICATION This specification was released originally for material used for boots on front wh
3、eel drive/shaft. 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). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 2 - 4 g/10 minutes (ISO 1133/ASTM D 1238,
4、230 C, 2.16 kg) The material shall be dried for 1 h minimum at 135 C in a mechanical convection oven immediately preceding the test. 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
5、. 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 and/or B. The specimens shall be prepared according to ISO 294. No annealing al
6、lowed. 3.5.2 Density 1.14 - 1.18 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Hardness Durometer D 42 - 58 (ISO 868/ASTM D 2240, 15 s dwell) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D720-APrinted copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 2 of 5 3.5.4 Tensile
7、Strength at Yield, min 11 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, value at Offset Yield at 40% Elongation, 50 mm/min test speed) 3.5.4.1 Elongation at Break, min 300% (Test Method according to para 3.5.4) 3.5.5 Flexural Modulus, min 80 MPa (ISO 178/ASTM D 790M, Method I,
8、Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.5.6 Shear Modulus at 23 C 40 - 65 MPa (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 be
9、tween 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 +110 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 5. 3.5.7 Impact Stren
10、gth, 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) 3.5.7.1 At 23 +/- 2 C No break 3.5.7.2 At -40 +/- 2 C No break The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. L
11、ow temperature testing shall be done within the cold box, if not possible, test can be conducted outside, but within 5 s. 3.5.8 Heat Deflection Temperature, min (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen) 3.5.8.1 At 1.82 MPa 30 C 3.5.8.2 At 0.45 MPa 40 C 3.5.9 Heat Aging Performance (ISO
12、 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 110 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength at Yield Change +/- 25% (Test Method per para 3.5.4) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D720-APrinted copies ar
13、e uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 3 of 5 3.5.9.2 Impact Strength, Izod Change No break (Test Method per para 3.5.7.1, 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 i
14、s 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. 3.7 FOGGING (A1 & A2) (FLTM BO 116-03) Fog Number, min 80 Formation of excessive amounts of clear film or droplets is cause for rejection. 3.8 SPECIAL REQUIREMENTS 3.8.1 Immersion in Oil No. 3 (ISO 1817/ASTM D 471, 1000 h at 110 +/- 2 C) 3.8.1.1 Ha
15、rdness Durometer D Change, max -17 to 0 (Test Method per para 3.5.3) 3.8.1.2 Tensile Strength at Yield, min 9 MPa (Test Method per para 3.5.4) 3.8.1.3 Impact Strength, Izod, min No break (Test Method per para 3.5.7.1, specimens to be notched before aging) 3.8.2 Immersion in Approved Grease of Affect
16、ed Model Year (see para 5.3) (ISO 1817/ASTM D 471, 1000 h at 110 +/- 2 C) 3.8.2.1 Hardness Durometer D Change, max -17 to 0 (Test Method per para 3.5.3) 3.8.2.2 Tensile Strength at Yield, min 9 MPa (Test Method per para 3.5.4) 3.8.2.3 Impact Strength, Izod, min No break (Test Method per para 3.5.7.1
17、, specimens to be notched before aging) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D720-APrinted copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 4 of 5 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements
18、of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 10-5/ 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 1.2 - 1.5% 5.2.2 Post Shrinkage (Separate specimens required for each
19、 test) . After 48 h at 80 C 0.1 - 0.5% . After 30 min at 120 C 0.2 - 0.7% 5.3 For information on currently approved service fluids and other materials required for use in this specification contact: Materials Laboratory D-MB/PT-33 Fluids Material Section Ford Werke AG Coolants/Greases John Andrews E
20、ntwicklungszentrum Engine Engineering Merkenich Ford Motor Co. Postfach 60 40 02 PO Box 2053 D-5000 Koeln-60, West Germany 21500 Oakwood Blvd. Dearborn, MI 48121, USA Materials Engineering Product Engineering Office Ford Motor Co. of Australia Ltd Princes Highway, Norlane Victoria 3214, Australia ENGINEERING MATERIAL SPECIFICATIONWSK-M4D720-APrinted copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 5 of 5
