GMKOREA EDS-M-1902-2011 Ductile Iron Castings.pdf
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1、 ENGINEERING STANDARDS Material Specification SUPERCEDED EDS-M-1902 Ductile Iron Castings This standard may be applied only for current project. It is Superceded for all future projects and replaced by GMW10. 1 H 7$ :0= Note: 8 E:48t G8 =9 7 FF7 957%L+ , FG P-P Program .Bd# GMW10 8p) $4=F7 957F$ . C
2、opyright 2011 General Motors Company All Rights Reserved April 2011 Originating Department: GM Korea Engineering Standards Page 1 of 7 Version : 6 1 Scope 1.1 Material Description. This standard specifies the ductile iron castings used by GM Korea Company (hereinafter referred to as the “GM Korea“).
3、 1.1.1 Type and Use (Reference). 1 P7 1.1 8: 8-L C2e . 8 8t GM Korea Company (8F “$-1 ( F )72P 17F# 1 H 7$ :0=E7 $4F7 9IF$ . 1.1.1 9* -C 7$ (=l ). Table 1: Type and Use / E 1: 9* -C 7$ Type / 9* Base structure / d: 9: Uses / 7$ Applications / 957 70 1G7 $4F ! 2e8 7 %L# .E . Rear Axle housing, Fly Wh
4、eel, Exhaust manifold. / *6 73 F7; , F(8 HL8 , -dd +#E(& . FCD 450 Ferrite-Pearlite / D(8C -D(8C FCD 500 Ferrite-Pearlite / D(8C -D(8C Rear wheel hub. / *6 HL8 F/ FCD 600 Ferrite-Pearlite / D(8C -D(8C Crank shaft. / A (A 2F8C FCD 700 Mainly Pearlite / :0) D(8C FCD 800 Pearlite / D(8C 2 References No
5、te: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. ISO 6506 JIS Z2241 2.2 GM Standards/Specifications. EDS-T-7101 GMW3059 2.3 Additional References. TMC003 Material Safety Data Sheet guidance documents 2 4) E:4 / :0 : C-H +d%P 9I8
6、 6# F 48 07 38%P E:48x 957F$ . 2.1 17 E:4 / . ISO 6506 JIS Z2241 2.2 GM E:4 / . EDS-T-7101 GMW3059 2.3 dA E:4 / . TMC003 Material Safety Data Sheet guidance documents GM KOREA ENGINEERING STANDARDS EDS-M-1902 Copyright 2011 General Motors Company All Rights Reserved April 2011 Page 2 of 7 Version :
7、6 3 Requirements 3.1 Chemical Composition. 3 7 1F 3.1 GF 2e. . Table 2: Chemical Composition (Unit: wt%) / E 2: GF 2e. ($88 : wt%) Type / 9* C Si Mn P S Mg FCD 3.0 3.9 1.5 2.7 0.8 max / 0.8 8F 0.1 max / 0.1 8F 0.02 max / 0.02 8F 0.02 min / 0.02 81 Remark: Values in Table 2 are the reference values o
8、n which the quality of castings are controlled and compositions other S, Mg shall not be regulated. / /x : E 28 F8t :0,p E:8x 4*Fd 88F E:4?8+ S, Mg 878 2e.8t 9PF: 6#$ . 3.2 Mechanical Properties. 3.2 d95 2e: . Table 3: Mechanical properties / E 3: d95 2e: Type / 9* Tensile Strength (N/mm2) / 88 I$ (
9、N/mm2) Yield strength (N/mm2) / F.) I$ (N/mm2) Elongation (%) / 48 (%) Hardness (HB) / $ (HB) FCD 400 400 min / 400 81 250 min / 250 81 12 min / 12 81 201 max / 201 8F FCD 450 450 min / 450 81 280 min / 280 81 10 min / 10 81 143 ) 217 FCD 500 500 min / 500 81 320 min / 320 81 7 min / 7 81 170 ) 241
10、FCD 600 600 min / 600 81 370 min / 370 81 3 min / 3 81 192 ) 269 FCD 700 700 min / 700 81 420 min / 420 81 2 min / 2 81 229 ) 302 FCD 800 800 min / 800 81 480 min / 480 81 2 min / 2 81 248 ) 352 Remark: Tensile, yield strength and elongation are the values resulting from the test performed with the
11、specimen of paragraph 3.5.2. / /x : 88 , F.) I$ -C 488t 3.5.2 F8 )48* 17F7 4G F F8 . 3.3 Microstructure. 3.3.1 Microstructure of castings shall satisfy Table 4 in EDS-T-7101 Method of Microscopic Test for the Microstructures in Cast Iron by the Structure Rating Chart 3.3 -,2l 9: . 3.3.1 :0=E8 -,2l 9
12、:8t EDS-T-7101 Structure Rating Chart 7 8F :0=8 G8-, 9: 4G - 7 8F E 4* +9F6 F$ . GM KOREA ENGINEERING STANDARDS EDS-M-1902 Copyright 2011 General Motors Company All Rights Reserved April 2011 Page 3 of 7 Version : 6 Table 4: Microstructure / E 4: -,2l 9: Type / 9* Graphite structure / H 7$9: Base st
13、ructure / d:9: Shape (M ) / GIB (M ) Spheroidizing ratio (N ) / 1G8 (N ) Size (O ) / A d (O ) Ferrite-Pearlite area ratio (P ) / D(8C -D(8C +95/x (IX) FCD 400 Figure 1 ) 3 / ,* 1 ) 3 Figure 1 ) 2 / ,* 1 ) 2 Figure 6 ) 8 / ,* 6 ) 8 Ferrite 90 % min. (Figure 6) / D(8C 90 % 81 (,* 6) FCD 450 Figure 1 )
14、 3 / ,* 1 ) 3 Figure 1 ) 2 / ,* 1 ) 2 Figure 6 ) 8 / ,* 6 ) 8 Ferrite 75 % min. (Figure 5) / D(8C 75 % 81 (,* 5) FCD 500 Figure 1 ) 3 / ,* 1 ) 3 Figure 1 ) 2 / ,* 1 ) 2 Figure 6 ) 8 / ,* 6 ) 8 Ferrite 60 % min. (Figure 4) / D(8C 60 % 81 (,* 4) FCD 600 Figure 1 ) 3 / ,* 1 ) 3 Figure 1 ) 2 / ,* 1 ) 2
15、Figure 6 ) 8 / ,* 6 ) 8 Ferrite 20 % max. (Figure 2) / D(8C 20 % 8F (,* 2) FCD 700 Figure 1 ) 2 / ,* 1 ) 2 Figure 1 ) 2 / ,* 1 ) 2 Figure 6 ) 8 / ,* 6 ) 8 Ferrite 10 % max. (Figure 1) / D(8C 10 % 8F (,* 1) FCD 800 Figure 1 ) 2 / ,* 1 ) 2 Figure 1 ) 2 / ,* 1 ) 2 Figure 6 ) 8 / ,* 6 ) 8 Pure pearlite
16、(Fine layer structure) / 3P D(8C (-,2lF ?i1 9 ) 3.3.2 Appropriate heat-treatment may be done to remove casting stress after casting. In this case also, microstructure shall satisfy the specification in Table 4. 3.4 Appearance. 3.4.1 Dimensions of the iron castings shall satisfy the specification in
17、the drawing. 3.4.2 The surface of the iron castings shall be free from molding and core sand and such defects as crack, intrusion of casting sand and slag, blowhole, shrinkage hole that may cause harm during, machining and use. 3.3.2 :09 G 8* 8 )Y8x 9PFd 88F 7(=*# E 48 9:8x -G 4A: 66x6 F$ . 3.4 :0,p
18、8 1B . 3.4.1 :0,p8 ?3L# $+ 9P* +9F6 F$ . 3.4.2 :0,p8 E+8t 7GI -C 6 :0GI14 666 F+ 4) -C 171 F* :0# 7( , :0GI1 -C 3(,8 Gp8 , d) , 3L) &%8 F8 666 F$ . 3.5 Test. 3.5.1 All tests shall be performed at a temperature of 235 E . 3.5.2 Specimen. 3.5.2.1 Manufacturing Method of Test Specimen. The specimen sha
19、ll generally be cast separately under the same conditions as the iron castings, using the mould of the same type with the iron castings. Sampling cycle and numbers of test specimen shall be agreed between the parties concerned. Specimen shall be simultaneously heat-treated along with the products in
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