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CAST IRON GG-25 GRADE : MATERIAL CHEMICAL COMPOSITION
| Material |
C |
Si |
Mn |
Cr |
Cu |
Sn |
S |
P |
Fe |
HARDNESS |
| Percentage (%) |
3.0 to 3.90% |
2.0 to 2.90 % |
0.60 to 0.70 % |
0.30 %Max |
Max 0.50% |
0.10% |
0.15%Max |
0.40 to 0.70 % |
Balance |
190-240BHN |
BRASS VALVE GUIDES: MATERIAL CHEMICAL COMPOSITION
| Material |
Cu |
Pb(Led) |
Sn(Tin) |
Fe(Iron) |
Cu |
Al |
Ni |
Mn |
Total impurities |
| Percentage (%) |
56.0 to 58.0% |
2.0 to 3.4% |
TR |
0.35 %Max |
Max 0.50% |
TR |
TR |
TR |
0.70 % |
ALUMINUM BRONZE VALVE GUIDES: MATERIAL CHEMICAL COMPOSITION
| Material |
Cu |
Pb(Led) |
Fe |
Ai |
Mn |
Si |
Total impurities |
HARDNESS |
| Percentage (%) |
57.0 to 60.0% |
0.30 to 0.60% |
0.25 %Max |
1.50 to 2.0 % |
2.0 to 4.0 % |
0.60 to 0.90 % |
0.40% Max |
150 to 210BHN |
