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Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of | |
A. | 90% tungsten carbide and 10% cobalt. [Correct Answer] |
B. | 70% aluminium oxide & 30% silica. [Wrong Answer] |
C. | 30% nickel, 15% chromium & 55% tungsten. [Wrong Answer] |
D. | 65% tungsten & 35% zirconium. [Wrong Answer] |