Question

Up to what percent of carbon content in steel, it is not required to preheat it?

(a) 0.25% – 0.3%

(b) 0.3% – 0.35%

(c) 0.35% – 0.4%

(d) 0.4% – 0.45%

Answer 1

Correct option is (a) 0.25% – 0.3%

Explanation: Low carbon steels are the ones containing low amount of carbon in them, which does not require preheating. The amount of carbon content needed in low carbon steels, is 0.25% to 0.3%, if preheating is to be avoided.