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1. Free cutting steels
2. The presence of hydrogen in steel causes
3. Tin base white metals are used where the bearings are subjected to
4. The charge of the blast furnace consists of
5. The ability of a material to resist fracture due to high impact loads, is called
6. The purpose of heat treatment is to
7. An alloy of copper, tin and zinc is known as
8. Which of the following iron exist between 910° C and 1403° C?
9. The material in which the atoms are arranged chaotically, is called
10. In basic bessemer process, the furnace is lined with
11. Polyvinylchloride (PVC) is a __________ material.
12. The steel produced by cementation process is known as __________ steel.
13. Duralumin has better strength than Y-alloy at high temperature.
14. Normalising of steel is done to
15. A steel containing 12 to 14% chromium and 0.12 to 0.35% carbon is called martensitic stainless steel.
16. When a steel containing __________ 0.8% carbon is cooled slowly below the lower critical point, it consists of ferrite and pearlite.
17. Shock resistance of steel is increased by adding
18. In low carbon steels, __________ raises the yield point and improves the resistance to atmospheric corrosion.
19. A steel containing 16 to 18% chromium and about 0.12% carbon is called
20. The alloy, mainly used for corrosion resistance in stainless steels is
Material Science Quiz 9
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