GMKOREA EDS-M-7217-2011 Tubing Chlorinated Polyethylene Rubber.pdf
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1、 ENGINEERING STANDARDS Material Specification LIMITED USE EDS-M-7217 Tubing, Chlorinated Polyethylene Rubber Do Not Use on New Program; No Replacement. 7$*Gl37 957%L# 70GE(*7D,) F2e,h8 8: Note: 8 E:48t G8 =97 FF7 957%L+ , FG P-P Program 72P# 957%L: 6#$ . Copyright 2011 General Motors Company All Rig
2、hts Reserved June 2011 Originating Department: GM Korea Engineering Standards Page 1 of 4 Version : 4 1 Scope 1.1 Material Description. Chlorosulfonated polyethylene rubber of high temperature and ozone and medium oil resistances. 1.2 Typical Applications. This specification defines general requirem
3、ents for synthetic base rubber material, which is applied to protective cover of fuel. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. ASTM D297 ASTM D380 ASTM D471 2.2 GM Standards/Specifications. EDS-T-7403 EDS
4、-T-7408 EDS-T-7421 EDS-T-7423 EDS-T-7424 GMW3059 2.3 Additional References. TMC003 Material Safety Data Sheet guidance documents 3 Requirements 3.1 Test Piece. Size and number of test piece is determined in related test specifications. 3.2 General Properties. 3.2.1 Original Physical Properties. 3.2.
5、1.1 Tensile Strength (EDS-T-7408). 1,030 N/cm2 min. y Dumbbell-shaped test pieces. 3.2.1.2 Elongation (EDS-T-7408). 225 % min. y Dumbbell-shaped test pieces. 3.2.1.3 Modulus (EDS-T-7408). 340 N/cm2 min. y At 100 % elongation. 3.2.1.4 Hardness (EDS-T-7403). 65 ) 78(Shore A). 1 P7 1.1 8: 8-L C2e . “8t
6、 !7(2e -C !7X92e0 6# 9I$8 !7X82e8x 4: 70GE(*7D,) F2e,h . 1.2 957 -88 . ., 8t 8% =8 7$*Gl3 .(Gl*7 957%L# F2e,h 8:7 4F 8-L958 7 ?* 9IF 8$ . 2 4) E:4 / :0 : C-H +d%P 9I8 6# F 48 07 38%P E:48x 957F$ . 2.1 17 E:4 / . ASTM D297 ASTM D380 ASTM D471 2.2 GM E:4 / . EDS-T-7403 EDS-T-7408 EDS-T-7421 EDS-T-7423
7、 EDS-T-7424 GMW3059 2.3 dA E:4 / . TMC003 Material Safety Data Sheet guidance documents 3 7 1F 3.1 4G D . 4G D8 A d -C 3L(8t 4) 4G 72P :9IF$ . 3.2 d., 7 1F . 3.2.1 88* ,p2e . 3.2.1.1 88 I$ (EDS-T-7408). 1,030 N/cm2 81 . y 6x)mGI 4G D . 3.2.1.2 488 (EDS-T-7408). 225 % 81 . y 6x)mGI 4G D . 3.2.1.3 +%)
8、 3 (EDS-T-7408). 340 N/cm2 81 . y 100% 48 4 . 3.2.1.4 $ (EDS-T-7403). 65 ) 78(Shore A). GM KOREA ENGINEERING STANDARDS EDS-M-7217 Copyright 2011 General Motors Company All Rights Reserved June 2011 Page 2 of 4 Version : 4 3.2.2 Heat Aged Properties (EDS-T-7421-E2). 3.2.2.1 Tensile Strength Change. (
9、-25) % max. 3.2.2.2 Elongation Change. (-50) % max. 3.2.2.3 Hardness Change. 0 +10 (Shore A). y Shore A hardness is not to exceed 85 durometer. 3.2.3 Fuel Resistance (ASTM D 471, 70 hours at 232 E ). Immersion in ASTM Fuel “B” 3.2.3.1 Tensile Strength Change. (-50) % max. 3.2.3.2 Elongation Change.
10、(-30) % max. 3.2.3.3 Volume Change. +60 % max. 3.2.3.4 Hardness Change. (-25) 0 (Shore A). 3.2.4 Ozone Resistance. No cracks shall be shown. 3.2.4.1 The “as received“ part having a 25 mm minimum length, shall have one nipple expanded to a minimum internal diameter of twice the nominal inside diamete
11、r for a length of (193) mm by forcing the end of one fitting over the appropriate size metal mandrel lubricated with talc. 3.2.4.2 The expanded outside surface of the fitting shall be wiped with a cotton gauze wetted with naphtha (M14J148) to remove any wax or other foreign material which may affect
12、 the ozone test. 3.2.4.3 Place the elongated tubing at room temperature for 24 hours and put it in ozone tester of (1005) pphm. The inside temperature of the tester shall be at 38 E 1 K. 3.2.5 Compression Set (EDS-T-7424-E). 40 % max. 3.2.6 Vacuum Collapse. 3 % max. y Plug all openings of tubing, ex
13、pose it to a vacuum of 81 KPa for five minutes and measure the collapse of outside diameter the tubing. 3.2.7 Cold Flexibility (EDS-T-7423-C2). No cracks and breaks shall be shown. y Leave a tubing at (-40) E for 24 hours, flex it 180 over a mandrel with a diameter equal to 8 times the original outs
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