1、 ENGINEERING STANDARDS Material Specification LIMITED USE EDS-M-2304 Special Brass Do Not Use on New Program; No Replacement. C3L G%Note: 8 E:48t G8 =97 FF7 957%L+ , FG P-P Program 72P# 957%L: 6#$ . Copyright 2011 General Motors Company All Rights Reserved April 2011 Originating Department: GM Korea
2、 Engineering Standards Page 1 of 6 Version : 6 1 Scope 1.1 Material Description. This standard specifies the special brass for parts requiring wear resistance used by GM Korea Company (hereinafter referred to as the “GM Korea“). 1.1.1 Type and Use (Reference). 1 P7 1.1 8: 8-L C2e . 8 8t GM Korea Com
3、pany (8F “$-1 ( F )72P !*+2e8 7 %L# .E7 17F# C3LG% 7 $4F7 9I F$ . 1.1.1 9* -C 7$ (=l ). Table 1: Type and Use / E 1: 9* -C 7$ Type / 9* Use / 7$ Applications / 957 707 38%P E:48x 957F$ . 2.1 17 E:4 / . ISO 6506 JIS Z2241 2.2 GM E:4 / . GMW3059 2.3 dA E:4 / . TMC003 Material Safety Data Sheet guidanc
4、e documents 3 7 1F 3.1 GF 2e. . GM KOREA ENGINEERING STANDARDS EDS-M-2304 Copyright 2011 General Motors Company All Rights Reserved April 2011 Page 2 of 6 Version : 6 Table 2: Chemical Composition (Unit: wt%) / E 2: GF 2e. ($88 : wt%) Type / 9* Cu Al Mn Si Zn Fe Sn Ni Pb Co Cr Ti C4080S 56.5 58.5 1.
5、3 2.1 1.5 2.3 0.5 0.7 Balance or Residual / !+l: 0.3 0.8 0.5 max. / 0.5 8F 5 max. / 5 8F 0.3 0.8 - - - C4083S Balance or Residual / !+l: 3.5 4.5 - 0.5 1.5 27 32 0.5 1.3 - 2.5 4.0 - 1.0 2.0 - - C4084S 55 60 3.3 3.8 1.3 1.8 0.7 1.2 28 34 0.7 1.2 - 3.9 4.5 - - 0.2 0.5 0.08 0.25 C4085S Balance or Residu
6、al / !+l: 2.0 3.5 2.5 3.5 0.6 1.2 27.5 35.5 0.5 max. / 0.5 8F - 0.25 0.5 0.15 max. / 0.15 8F - - - 3.2 Mechanical Properties. 3.2 d95 2e: . Table 3: Mechanical Properties / E 3: d952e: Type / 9* Tensile strength (N/mm2) / 88I$ (N/mm2) Yield strength (N/mm2) / F.)I$ (N/mm2) Elongation (%) / 48 (%) Ha
7、rdness / $ Impact value (Kgm/mm2) / ? (Kgm/mm2) C4080S - - - 140 ) 170 HB(F=10D2) - C4083S 635 min. / 635 81 470 min. / 470 81 4 min. / 4 81 197 ) 241 HB(F=10D2) - C4084S 588 min. / 588 81 363 min. / 363 81 5 min. / 5 81 194 min. HB(F=10D2) / 2 min. / 2 81 C4085S 539 min. / 539 81 294 min. / 294 81
8、12 min. / 12 81 85105 HRB - 3.3 Microstructure. 3.3.1 C4080S. The structure shall consist of solid solution, but some . solid solution may be allowed. Precipitated Mn and Fe silicides shall exist in acicular shape. 3.3.2 C4083S. The structure shall consist of solid solution, but some . solid solutio
9、n (30% max.) may be allowed. Co precipitates shall exist in spherodized or fine shape and proper annealing is required to get this structure. 3.3.3 C4084S. The structure shall consist of solid solution, but some . solid solution (30% max.) may be allowed. Fe-Si base and Ni precipitates shall exist i
10、n spherodized or fine shape. 3.3 -,2l 9: . 3.3.1 C4080S. 9:8t :0) 7=) 2e%L66 F+ , 688 .7= .8 F7%T 3L 8$ . 2Q%P Mn -C Fe G,p8t ?18 GIB) 98F6 %P$ . 3.3.2 C4083S. 9:8t :0) 7=) 2e%L66 F+ , 688 . 7= . (30% 8F )8 F7%T 3L 8$ . Co 2Q,p8t 1 D# -,2lF GIB) 98F6 F+ , 8) F 9:8x 6d 88F2P# 95$-F 2%=*4 Fx7F$ . 3.3.
11、3 C4084S. 9:8t :0) 7=) 2e%L66 F+ , 688 . 7= . (30%8F )8 F7%T 3L 8$ . Fe-Si -C Ni 2Q,p8t 1 D# -,2lF GIB) 98F6 %P$ . GM KOREA ENGINEERING STANDARDS EDS-M-2304 Copyright 2011 General Motors Company All Rights Reserved April 2011 Page 3 of 6 Version : 6 3.3.4 C4085S. The structure shall consist of . + +
12、 phase, but some . solid solution (40% max) may be allowed. The phase as a intermetalic compound of Mn-Si must precipitate uniformly and finely. 3.3.5 All of those materials shall be free from oxide inclusions. 3.4 Physical Properties (For reference). 3.3.4 C4085S. 9:8t 8F . + + 18p) , 1 (Mn-Si %L66
13、 F+ , .7= .8t 40%8!) F7F$ . 3.3.5 8: +% !.7 1G P8,p8 666 F$ . 3.4 ,p*95 2e: (=l ). Table 4: Physical Properties / E 4: ,p*95 2e: Designations / F+ C4080S C4083S C4084S C4085S Density (g/cm3) / -4$ (g/cm3) 8.1 8.0 7.96 8.1 Elastic modulus (kN/mm2) / A2e3L (kN/mm2) 100 105 108 112 Coefficient of linea
14、r expansion (10-6/K, 25 ) 100 E ) / 2TDq=q3L (10-6/K, 25 ) 100 E ) 17.0 20.5 20.8 20 Thermal conductivity (W/(Kcm), 20 ) 100 E ) / 7(98$ (W/(Kcm), 20 ) 100 E ) 1.00 0.84 - Electric conductivity (m/mm2) / 98d98$ (m/mm2) 13 - - 23 Poissons ratio / E 6x2/x - 0.31 - 0.33 Hot working temperature ( E ) /
15、7 86 7$ ( E ) - 800 ) 850 - 700800 Melting point / 8i9D ( E ) - 900 ) 940 897 ) 945 860890 3.5 Surface Condition. The surface shall be smooth and free from internal/external defects harmful to the manufacturing process or function of the products. 3.6 Test. 3.6.1 All tests shall be performed at a te
16、mperature of 235 E . 3.6.2 Test Standards. ISO 6506: Brinell Hardness Test. JIS Z2241: Tensile Testing - Method of Test at Room Temperature. 3.5 E+ 9 . E+8t +!|F6 F+ , 9PE8 9P9 )9I8! d#7 F* :0# ! 7.8 F8t F7 %L: 6#$ . 3.6 4G . 3.6.1 + Japan) / AT-1E (:E8F ; 8., ) C4084S - KMS-2E (Korea Plate) / KMS-2E ()X28 ) C4085S - CSM-3ME(CHUETSU Metal; Japan) / CSM-3ME (:E8F ; 8., )
