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Give the ages of carbon in (i) low carbon steels, (ii) medium carbon steels...

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(a) Give the ages of carbon in (i) low carbon steels, (ii) medium carbon steels, (iii) high carbon steels.

(b) Give the %age of the alloying elements in (i) low alloy steels and (ii) high alloy steels.

(c) All cast irons contain at least six elements. Name these elements.

(d) When will you recommend carburising of steel ? Give salient features of the process. (e) Give the composition and use of (i) Bronze, (ii) Duralumin.

 

(a) Carbon in low carbon steel : < 0.25%, medium 0.3 to 0.6%, high carbon steel : 0.6 to 1.5%

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