1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2005 02 14 Revised Inserted 3.0; Deleted 3.5, 4 1978 11 14 Metricated, Renumbered and Retyped CAH1-RD572066-173 1963 07 25 Released AS1 #1002 Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 1 of 3 CABLE CONDU
2、IT, NONMETALLIC ESB-M3L38-A 1. SCOPE The material defined by this specification is a flexible nonmetallic conduit, composed of cotton warp yarns or (alternately) glass reinforced nylon thread similar to ESB-M4D89 and kraft paper fillers woven in a tubular form, impregnated with a satisfactory asphal
3、tic solution, coated with a black wax and paraffin solution. 2. APPLICATION This specification was released originally for material used as wiring assemblies in all car lines. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the
4、 Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 DIMENSION OF NONMETALLIC CONDUIT Nominal Inside Diameter, in (mm) Outside Diameter, in (mm) Size, in Minimum Maximum Minimum Maximum 1/8 0.125 0.145 0.210 0.235 (3.18) (3.68) (5.33) (5.97) 5/32 0.156 0.176 0.245 0.265 (3.
5、96) (4.47) (6.22) (6.73) 3/16 0.187 0.207 0.287 0.307 (4.75) (5.26) (7.29) (7.80) 7/32 0.218 0.238 0.313 0.343 (5.54) (6.05) (7.95) (8.71) 1/4 0.250 0.270 0.350 0.370 (6.35) (6.86) (8.89) (9.40) 9/32 0.281 0.301 0.386 0.406 (7.14) (7.65) (9.80) (10.31) 5/16 0.312 0.332 0.412 0.432 (7.92) (8.43) (10.
6、46) (10.97) 11/32 0.345 0.375 0.470 0.500 (8.76) (9.53) (11.94) (12.70) ENGINEERING MATERIAL SPECIFICATIONESB-M3L38-APrinted copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 2 of 3 Nominal Inside Diameter, in (mm) Outside Diameter, in (mm) Size, in Minimum Maximum Minimum M
7、aximum 3/8 0.375 0.395 0.505 0.525 (9.53) (10.03) (12.83) (13.34) 7/16 0.437 0.457 0.567 0.587 (11.10) (11.61) (14.40) (14.91) 1/2 0.500 0.520 0.630 0.650 (12.70) (13.21) (16.00) (16.51) 9/16 0.562 0.582 0.722 0.742 (14.27) (14.78) (18.34) (18.85) 5/8 0.625 0.645 0.785 0.805 (15.88) (16.38) (19.94)
8、(20.45) 11/16 0.687 0.707 0.847 0.867 (17.45) (17.96) (21.51) (22.02) 3/4 0.750 0.770 0.934 0.954 (19.05) (19.56) (23.72) (24.23) 13/16 0.812 0.832 0.996 1.016 (20.62) (21.13) (25.30) (25.81) 7/8 0.875 0.895 1.079 1.099 (22.23) (22.73) (27.41) (27.91) 15/16 0.937 0.957 1.141 1.161 (23.80) (24.31) (2
9、8.98) (29.49) 1 1.000 1.020 1.204 1.224 (25.40) (25.91) (30.58) (31.09) 3.2 TREATMENT The conduit shall be saturated inside and out with an asphaltic compound and shall be free from beads or seams or any obstruction which will interfere with the free passage of the wire. Treatment shall be completel
10、y dry. All shipments over 100 pieces should be shipped so that the pieces are placed and held in a vertical position during transit and storage, and must be sound when received. Light colored dusting powders are objectionable. 3.3 PERFORMANCE TESTS 3.3.1 Water Absorption Test Weight Increase, max 35
11、 % Test Method: A 6.0 in (152 mm) piece of loom shall be totally immersed in water at 23 +/- 2 C for 24 h, then blown out with a mild air current. Measure the weight increase immediately after removing the water. ENGINEERING MATERIAL SPECIFICATIONESB-M3L38-APrinted copies are uncontrolled Copyright
12、2005, Ford Global Technologies, LLC Page 3 of 3 3.3.2 Tensile Strength A 6.0 in (152 mm) piece of loom, measured between supports, shall be capable of standing a tension test for 5 min without breaking or opening at any point as required in the following table. Nominal Tensile Strength, Size, in lb
13、(N), min 1/8 & 5/32 65 (290) 3/16 75 (334) 1/4 85 (378) 5/16 & 3/8 100 (445) 7/16 or larger 150 (668) 3.3.3 Pinch Test The material in the wall of the loom shall not crack or break when a 3.0 in (76 mm) length is flattened between 2 steel plates. When the inside diameter of loom is 3/8 in (9.53 mm)
14、or smaller, the distance between plates is to be 11/64 in (4.37 mm). When the inside diameter of loom is over 3/8 in (9.53 mm), the distance between plates is to be 9/32 in (7.14 mm). The finish shall not show excessive cracking when loom is subjected to the test. 3.3.4 Bend Test The wall shall not
15、collapse when the loom is bent at 23 +/- 2 C to a radius of 5 times its inside diameter. The compound and finish shall not crack open in this test. 3.4 FLAME TEST Shall not support combustion for longer than a 1 min period. Test Method: Apply five 15 s applications of a standard test flame with inte
16、rvals of 15 s between applications. A standard test flame is the blue flame, about 5 in (127 mm) high, produced by a 1/2 in (12.7 mm) Bunsen burner fed with ordinary illuminating gas at normal pressure. The nonmetallic cable conduit shall be held vertically with either the lower or the upper end thoroughly sealed to prevent the passage of air. The flame must be applied horizontally.
