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    FORD WSK-M4D706-A-2012 POLYAMIDE (PA) 66 IMPACT MODIFIED HEAT STABILIZED MOLDING COMPOUND TO BE USED WITH FORD WSS-M99P1111-A .pdf

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    FORD WSK-M4D706-A-2012 POLYAMIDE (PA) 66 IMPACT MODIFIED HEAT STABILIZED MOLDING COMPOUND TO BE USED WITH FORD WSS-M99P1111-A .pdf

    1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Changes Rev 01 2012 06 07 N Status Replaced by WSS-M4D706-B1 N. Benipal, NA 1989-11-17 SM/EQ9859 TP Released M. Siewert WP 3948-a Page 1 of 6 POLYAMIDE (PA) 66, IMPACT MODIFIED, HEAT WSK-M4D706-A STABILIZED MOLDING CO

    2、MPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is an ethylene copolymer modified, heat stabilized polyamide 66 molding compound. 2. APPLICATION This specification was released originally for material used for plugs. NOTICE: This material absorbs and retains

    3、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. REQUIREMENTS 3.1 STATISTICAL PROCESS Suppliers must conform to the requirements of Ford Quality System Standard Q-101. A

    4、 mutually acceptable 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 Moto

    5、r Company, at its option, may conduct infrared and/or thermal analysis of material/parts supplied to this specification. The IR spectra and thermogram established for initial approval shall constitute the reference standard and shall be kept on file at the designated material laboratory. All samples

    6、 shall produce IR 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 and specimens with moisture content not exceeding 0.2 % (test according to ISO 960, M

    7、ethod 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 material for a minimum of 16 h at 40 - 50 C at a reduced pressure below 133 Pa. ENGINEERING MATERIAL SPECIFIC

    8、ATION WSK-M4D706-A WP 3948-a Page 2 of 6 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 Melt Temperature 250 - 265 C (ISO 1218, Meth

    9、od B/ASTM D 789) 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 Bar, ISO 3167) B. 120 x 10 x 4.0

    10、+/- 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 1.08 - 1.12 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Yield, m

    11、in 56 MPa (ISO R 527/ASTM D 638M, 150 x 10 x 4.0 +/-0.2 mm specimen, 50 mm/minute test speed) 3.5.3.1 Elongation at Yield, min 5 % (Test Method according to para 3.5.3) 3.5.4 Flexural Modulus, min 1.85 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support

    12、span) 3.5.5 Shear Modulus at 23 C 0.67 - 1.01 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 int

    13、erval - 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 range shown on page 6. ENGINEERING MATERIAL SPECIFICATION WSK-M4D706-A WP 3948-a Page 3 of 6 3.5

    14、.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 12 kJ/m2 3.5.6.2 At - 20 +/- 2 C 6.5 kJ/m2 3.5.6.3 At - 40 +/- 2 C 6.5 kJ/m2 The test specimens must be conditioned for minimum of 6 h at the a

    15、bove specified 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) 3.5.7.1 At 1.82 MPa 57 C 3.5.7.2

    16、At 0.45 MPa 170 C 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 130 +/- 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 determin

    17、ation) 3.5.8.1 Tensile Strength at Max Load, Change +/- 25 % (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod Change, max - 35 % (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

    18、 material approval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. 3.7 FOGGING (FLTM BO 116-3) Fog Number, min TBD Formation of excessive amounts of clear film or droplets is cause for rejection. ENGINEERING MATERIAL SPECIFICATION WSK-M4D706-A WP 3948-a Page 4 of 6 3.8 ADDITIONAL REQUIREMENTS S

    19、pecific 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 SUPPLIERS RESP

    20、ONSIBILITY 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 approved und

    21、er 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 Materials Engineerin

    22、g 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-M99P9999-A1, u

    23、nless a different suffix (e.g., A2 or A3) is specified on the engineering document for the application. 4. APPROVAL OF MATERIALS Materials defined by this specification must have prior approval by the responsible Materials Engineering activity. Suppliers desiring approval of their materials shall fi

    24、rst 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 own laboratory report to the specification (test results, not nominal values), the material designa

    25、tion 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 provided for clarification and assistance in meeting the requirements to the specification. 5.1 CO

    26、EFFICIENT OF LINEAR THERMAL EXPANSION 7 - 9E-5/ C (ASTM D 696) ENGINEERING MATERIAL SPECIFICATION WSK-M4D706-A WP 3948-a Page 5 of 6 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 - 1.8 % 5.2.2 Post Shr

    27、inkage (Separate specimens required for each test) After 48 h at 80 C 0.05 - 0.20 % After 30 minutes at 120 C 0.20 - 0.30 % 5.3 WATER ABSORPTION 0.75 - 1.10 % (ISO 62, 24 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

    28、 256, Method A, 63.5 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens minimum) 5.4.1 After Moisture Conditioning 25 kJ/m2 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. ENGINEERING MATERIAL SPECIFICATION WSK-M4D706-A WP 3948-a Page 6 of 6


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