15. The ability of a material to resist softening at high temperature is known as
16. In compression, a prism of brittle material will break
17. Malleability of a material can be defined as
18. For the allotropic forms of iron, the points of arrest are
19. Ductility of a material can be defined as
20. The percentage of carbon in pig iron varies from
21. The percentage of carbon in grey iron cast' ings usually varies between
