- (A) RC 65
- (B) RC 48
- (C) RC 57
- (D) RC 80
- (E) RC 32
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- (A) relieve stresses
- (B) harden steel slightly
- (C) improve machining characteristic
- (D) soften material
- (E) permit further cold working
- (A) substitutional solution
- (B) interstitial solid solution
- (C) intermetallic compounds
- (D) all of the above
- (E) none of the above.
- (A) hot working
- (B) tempering
- (C) normalising
- (D) annealing
- (E) special heat treatment
- (A) RC 65
- (B) RC 48
- (C) RC 57
- (D) RC 80
- (E) RC 32
- (A) formation of bainite structure
- (B) carburised structure
- (C) martenistic structure
- (D) lamellar layers of carbide distributed throughout the structure
- (E) relieving of stresses throughout a component
- (A) hardening surface of workpiece to ob-tain hard and wear resistant surface
- (B) heating and cooling rapidly
- (C) increasing hardness throughout
- (D) inducing hardness by continuous process
- (E) hardening core
- (A) cast iron
- (B) mild steel
- (C) non-ferrous materials
- (D) wrought iron
- (E) stainless steel
- (A) RC 65
- (B) RC 48
- (C) RC 57
- (D) RC 80
- (E) RC 32.
- (A) substitutional solid solution
- (B) interstitial solid solution
- (C) intermetallic compounds
- (D) all of the above
- (E) none of the above
