1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 20 N-STATUS No Replacement Named C. Mracna, NA 2004 07 21 Revised Para 3.0 inserted; para 3.5, 3.6, 3.7, 3.9 & 4 deleted 1974 11 14 Released CTD4C2D4RD7605313 (was XF-M99DX2) Printed copies are uncontrolled Copyright 2009, Ford Global
2、Technologies, LLC Page 1 of 2 TUBING, FLEXIBLE, SILICONE RUBBER IMPREGNATED ESF-M2D259-A GLASS FABRIC NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a high temperature flexible tube consisting of a silicone rubber impregnated glass fabric attached to a helical s
3、teel wire skeleton. 2. APPLICATION This specification was released originally for tubing used as the hot air intake duct connecting the air cleaner and the hot air passages around the manifold. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers m
4、ust conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 CONSTRUCTION Shall consist of a helical wound steel wire covered with and bonded to a 42 warp x 32 fill silicone rubber impregnated glass fabric. 3.2 IMPREGNATED FABRIC Tests to be conducted on every lot
5、 of material. 3.2.1 Breaking Strength, min (ASTM D 1458) Warp Direction 28 kN/m width Fill Direction 18 kN/m width 3.2.2 Tear Resistance, min 437 N/m thickness (ASTM D 2261, test actual hose 3.2.3 Thickness 0.25 - 0.36 mm 3.2.4 Flammability Self extinguishing in 1 minute (ISO 3795) 3.2.5 Heat Aging
6、70 h at 200 +/- 2 C) ENGINEERING MATERIAL SPECIFICATIONESF-M2D259-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 2 3.2.5.1 Breaking Strength Change Warp Direction +/- 25% Fill Direction +/- 25% 3.2.5.2 Weight Change - 5 to + 2% (ASTM D 1458) 3.2.6 Silicone
7、Volatiles, max 0.50% (FLTM AV 102-01, as received at Ford Motor Company) 3.3 WIRE 3.4 FABRICATED ASSEMBLY 3.4.1 Heat Aging (70 h at 200 +/- 2 C) After heat aging, compress tubes 50% and extend to normal length. Repeat for a total of 10 cycles. The fabric cover shall be free from blisters, thin areas
8、 cracks and torn places which are deleterious to the proper functioning of the part. There shall be good adhesion between the fabric layers and fabric to steel supports. 3.4.2 Bend Test No cracking, delamination, flattening or separation between the rubber and steel coil. Bend tube around a mandrel
9、 with a radius as indicated below. In case of intermediate sizes, use values for the next lower diameter. Tube Diameter, mm 25 51 76 102 Bend Radius, mm 13 25 38 51 3.8 ADDITIONAL REQUIREMENTS 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.
