1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 05 02 N-STATUS Replaced by WSK-M4D591-A A. Reaume/M. Masserant 2005 02 18 Revised Inserted 3.0; Deleted 3.4, 4 & 5 1979 03 26 Released CSJ2-822596-0 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 2
2、 NYLON (TYPE 66), 13% FIBERGLASS REINFORCED - ESA-M4D349-B IMPACT MODIFIED, HEAT STABILIZED NOT TO BE USED FOR NEW DESIGN 1. SCOPE This specification defines an impact modified, heat stabilized, 66 nylon reinforced with glass fibers. 2. APPLICATION This specification was initially released for mater
3、ial used for disc brake splash shields. 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). 3.1 MOLDING COMPOUND REQUIREMENTS 3.1.1 Melting Point, C 250
4、- 263 (ASTM D 789) 3.1.2 Fiberglass Content 13 +/- 2% Test Method: Place approximately 4-7 grams of material in a previously ignited and weighed porcelain crucible and weigh. Place in a muffle furnace and heat to 1000 +/- 25 F to constant weight. Cool in a desiccator, weigh, and calculate the percen
5、t glass. 3.1.3 Moisture Content, Dry As Molded, max 0.20% (ASTM D 789) 3.2 MOLDED TEST SPECIMEN REQUIREMENTS 3.2.1 Tensile Strength, MPa, min 93 (ASTM D 638, dry as molded) 3.2.2 Ultimate Elongation, min 4% (ASTM D 638) 3.2.3 Specific Gravity 1.17 to 1.25 (ASTM D 792) ENGINEERING MATERIAL SPECIFICAT
6、IONESA-M4D349-BPrinted copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 2 3.2.4 Thermal Stabilizer Present Test Method: Boil 10 grams of molded specimen in 50 ml of distilled water for 1/2 hour. Decant and add while stirring one drop of nitric acid to the filtrate foll
7、owed by three drops of 10% silver nitrate. The formation of a precipitate indicates the presence of heat stabilizer. An optional method may be used if agreed upon by the supplier and the affected product engineering office. 3.2.5 Flexural Modulus, MPa, min 3,400 (ASTM D 790, dry as molded) 3.2.6 Fle
8、xural Strength, MPa, min 106 3.2.7 Izod Impact Strength (J/m of notch) (ASTM D 256) at 23 C, min 85 at -40 C, min (required for initial approval only) 28 3.2.8 Heat Distortion Temperature, C (ASTM D 648, annealed) at 455 kPa (66 psi), min 240 at 1820 kPa (264 psi), min 230 3.3 MOLDED PART REQUIREMEN
9、TS 3.3.1 Melting Point, C 250 - 263 (ASTM D 789) 3.3.2 Specific Gravity 1.17 - 1.25 (ASTM D 792) 3.3.3 Fiberglass Content 13 +/- 2% (Per Test Method in Paragraph 3.1.2) 3.3.4 Maximum Allowable Regrind As Specified on Engineering Drawing 3.3.5 Specific Part Requirements Specific requirements for addi
10、tional physical properties of molded or extruded parts, when required, shall be specified on the engineering drawings and/or engineering specification. 6. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. Annealing test specimens: Heat for 30 minutes in oil at 28 C below the melting point of the material. Allow to cool in air away from drafts.
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