1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2014 10 16 N Status No replacement named L. Sinclair, NA 1986 01 28 Released CF4P-RD888002-341 1963 08 02 Released AS1 #1011 WB-3948-a Page 1 of 2 POLYVINYL CHLORIDE MOLDING COMPOUND ESB-M4G69-A NOT TO BE US
2、ED FOR NEW DESIGN 1. SCOPE: The material defined by this specification is a polyvinyl chloride or its copolymer, molding compound. 2. APPLICATION: This specification was released originally for material used for molded grommets and insulators in electrical applications. 3. REQUIREMENT: 3.1 COLOR All
3、 material colors will be specified on the engineering drawings. 3.2 SPECIFIC GRAVITY, max 1.64 (ASTM D 792) 3.3 TENSILE STRENGTH min 1000 psi (6.9 MPa) (ASTM D 412, Die “C , cured specimen) Elongation 200 - 400% 3.4 HARDNESS - DUROMETER “A“ 45 - 90 (ASTM D 2240) If specific hardness is desired, it s
4、hall be designated on the engineering drawing with a range of +/- 5 3.5 TEAR RESISTANCE, min 175 lb/in (30.7 kN/m) (ASTM D 624, Die “C“) 3.6 DIELECTRIC STRENGTH, min 100 V/mil (4 kV/mm) (ASTM D 149, cured specimen, min on 0.125 in (3.2 mm) 3.7 CONTACT AND MIGRATION STAINING A section of the producti
5、on part is placed in direct contact with coated cardboard, leather, rubber, vinyl coated fabric, textiles or painted metal panel, prepared per FLTM BI 3-2, normally used with the material in an assembly. ENGINEERING MATERIAL SPECIFICATION ESB-M4G69-A WB-3948-b Page 2 of 2 When it is exposed for 120
6、h in a mechanical convection oven maintained at 82 +/- 3 C, it shall exhibit no greater contact and/or migration staining, softening, or tackiness of the contact material than that exhibited by the master sample on file in Quality Control and/or Body Materials Laboratory. In addition, the formed par
7、ts shall exhibit no discoloration or loss of texture to greater extent than the master sample. 3.8 RESISTANCE TO FADE (FLTM BO 15-1, 200 h in sunlamp cabinet) Shall fade no more than the master sample on file in the Quality Control and/or Body Materials Laboratory. 3.9 COLD FLEXIBILITY (FLTM BN 2-1,
8、 2 x 8 x 1/8 in (50 x 200 x 3.2 mm) samples) 3.9.1 Materials Not Subjected To Flex In Assembly No failure at -29 C (76 - 90 durometer “A“ hardness) 3.9.2 Materials Subjected To Flex In Assembly No failure at -34 C (45 - 75 durometer “A“ hardness) 3.10 PHYSICAL PROPERTIES Specific requirements for ad
9、ditional physical properties of molded parts, when required, shall be specified on the engineering drawings. 3.11 SUPPLIERS RESPONSIBILITY Material supplied to this specification must be equivalent to that originally approved. Changes in formulation or processing shall not be made without prior appr
10、oval as described in Supplier Procedure I-A. 4. APPROVAL OF SUPPLIERS: Suppliers to this specification must be approved by the affected product engineering office. Procedure for gaining approval of a specific material to a new/existing ES-M specification is contained in Supplier Procedure I-A. Appro
11、ved new suppliers will be added to the Engineering Materials Approved Source List. 5. GENERAL INFORMATION: The material data included herein is for information only and is not a requirement for the supplier. Stain and fade requirements (para. 3.7 and 3.8) apply to parts which are colored for identification or normally visible.
