1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Changes 2011 03 01 No replacement named A. Pan, APA N Status, A1 1989 11 17 SM/EQ9859 TP Released L. Rodigas WP 3948-a Page 1 of 6 THERMOPLASTIC POLYESTER-ETHER ELASTOMER (TEEE), WSK-M4D692-A1 55 DUROMETER D HARDNESS,
2、 EXTRUSION MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN THERMOPLASTIC POLYESTER-ETHER ELASTOMER (TEEE), WSK-M4D692-A2 55 DUROMETER D HARDNESS, HEAT STABILIZED EXTRUSION MOLDING COMPOUND 1. SCOPE The materials defined by these specifications are rigid thermoplastic polyester-ether elastomer (TEEE),
3、 55 durometer D hardness, preferable for extrusion molding. 2. APPLICATION These specifications were released originally for materials used for damping bushes. 3. REQUIREMENTS 3.1 STATISTICAL PROCESS Suppliers must conform to the requirements of Ford Quality System Standard Q-101. A mutually accepta
4、ble Control Plan as described therein is required for material/source approval. Appropriate statistical tools must be used to analyze process/product data so that variation in the final product is continuously reduced. 3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS Ford Motor Company, at its
5、 option, may conduct infrared and/or thermal analysis of material/parts supplied to this specification. The IR spectra and thermograms established for initial approval shall constitute the reference standard and shall be kept on file at the designated material laboratory. All samples shall produce I
6、R spectra and thermograms that correspond to the reference standard when tested under the same conditions. 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 th
7、an 24 h prior to testing and tested under the same conditions unless otherwise specified. ENGINEERING MATERIAL SPECIFICATION WSK-M4D692-A1 WSK-M4D692-A2 WP 3948-b Page 2 of 6 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate (ISO 1133/ASTM D 1238, 220 C, 2.16 kg) WSK-M4D692-A1 6 - 9 g/10 minutes WSK-M4D692-
8、A2 7 - 10 g/ 10 minutes 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 s
9、pecimens. 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 anne
10、aling allowed. 3.5.2 Density (A1 & A2) 1.17 - 1.22 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Hardness Durometer D (A1 & A2) 50 - 60 (ISO 868/ASTM D 2240, 15 s dwell) 3.5.4 Tensile Strength at Yield, min 13 MPa (A1 & A2) (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50
11、mm/min test speed) 3.5.4.1 Elongation at Yield, min 28 % (Test Method according to para 3.5.4) 3.5.5 Flexural Modulus, min (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) WSK-M4D692-A1 150 MPa WSK-M4D692-A2 160 MPa ENGINEERING MATERIAL SPECIFICATIO
12、N WSK-M4D692-A1 WSK-M4D692-A2 WP 3948-b Page 3 of 6 3.5.6 Shear Modulus at 23 C (A1 & A2) 60 - 90 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 betwee
13、n 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 + 150 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 6. 3.5.7 Impact Strength
14、 Izod, min (A1 & A2) (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
15、 test. Low temperature testing shall be done within the cold box, if not possible, test can be conducted outside, but within 5 s. 3.5.8 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 WSK-M4D692-A1 40 C WSK-M4D692-A2 35 C 3.5.8.2 At 0.45 M
16、Pa WSK-M4D692-A1 65 C WSK-M4D692-A2 55 C 3.5.9 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, WSK-M4D692-A1 - 1000 h at 110 +/- 2 C and WSK-M4D692-A2 - 1000 h at 130 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.9.1 T
17、ensile Strength at Yield Change +/- 25 % (Test Method per para 3.5.4) 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) ENGINEERING MATERIAL SPECIFICATION WSK-M4D692-A1 WSK-M4D692-A2 WP 3948-b Page 4 of 6 3.6 FLAMMABILITY (A1 & A2
18、) (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 (A1 & A2) (FLTM BO 116-3) Fog Number, min tbd Formation of excessive amounts of clear film or droplets is cause for rejection. 3.8 ADDITIONAL RE
19、QUIREMENTS Specific requirements for material and/or manufactured parts shall be specified on the Engineering drawing, Engineering parts specification and/or performance specifications. All critical areas with respect to these properties shall be clearly designated on the Engineering drawing. 3.9 SU
20、PPLIERS RESPONSIBILITY All materials supplied to this specification must be equivalent in all characteristics to the material upon which approval was originally granted. Prior to making any change in the properties, composition, construction, color, processing or labeling of the material originally
21、approved under this specification, whether or not such changes affect the materials ability to meet the specification requirements, the Supplier shall notify Purchasing, Toxicology and the affected Materials Engineering activity of the proposed changes and obtain the written approval of the Material
22、s Engineering activity. Test data, test samples and a new code identification are to be submitted with the request. Substance restrictions imposed by law, regulations or Ford, apply to the materials addressed by this document. The restrictions are defined in Engineering Material Specification WSS-M9
23、9P9999-A1, unless a different suffix (e.g., A2 or A3) is specified on the engineering document for the application. ENGINEERING MATERIAL SPECIFICATION WSK-M4D692-A1 WSK-M4D692-A2 WP 3948-b Page 5 of 6 4. APPROVAL OF MATERIALS Materials defined by this specification must have prior approval by the re
24、sponsible Materials Engineering activity. Suppliers desiring approval of their materials shall first obtain an expression of interest from the affected Purchasing, Design and Materials Engineering activity. Upon request, the Supplier shall submit to the affected Materials Engineering activity its ow
25、n laboratory report to the specification (test results, not nominal values), the material designation and code number, and test specimens for Ford evaluation. Upon approval, the material will be added to the Engineering Material Approved Source List. 5. GENERAL INFORMATION The information below is p
26、rovided for clarification and assistance in meeting the requirements to the specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION (A1 & A2) 10E-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (A! & A2) (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 1.1 - 1.5 % 5.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C 0.1 - 0.3 % After 30 min at 120 C 0.2 - 0.5 % ENGINEERING MATERIAL SPECIFICATION WSK-M4D692-A1 WSK-M4D692-A2 WP 3948-b Page 6 of 6
