Stellite preserves hardness up to a temperature of
A. 350°C
B. 500°C
C. 900°C
D. 1100°C
Answer: Option D
Solution (By Examveda Team)
Stellite alloys are composed of various amounts of cobalt, nickel, iron, aluminium, boron, carbon, chromium, manganese, molybdenum, phosphorus, sulfur, silicon, and titanium. Stellite preserves hardness up to a temperature of 1100°CThis Question Belongs to Mechanical Engineering >> Manufacturing And Production Technology
Stellite is an alloy of Cobalt, Chromium and Tungsten and it is non-ferrous alloy.
The hardness of Stellite is not affected by heat upto 1100°C and it is actually tougher at red heat than cold.
Due to this important characteristic, it is widely used in cutting tool material.
It works best when tools operated at high speed and low feed
Although parts as large as 22 kg can be produced, most PM components are
less than 2.2 kg.
Select one:
True
False
in stellite tool main constitute is the cobalt which maintain cutting edges sharp at elecated temp