Question

Which elements generally have the most effect upon Carbon Equivalent and weldability of steel?

a) Silicon and Nickel.
b) Carbon and Manganese.
c) Sulphur, Nickel, and Boron.
d) Chromium and Nickel.
e) Calcium and Nitrogen.

Answer 1

Carbon and manganese are the primary elements affecting the Carbon Equivalent and weldability of steel due to carbon's role in determining hardness and strength, and manganese's role as a deoxidizer and contributor to steel's tensile strength.

Step-by-step explanation:

The elements that generally have the most effect upon Carbon Equivalent and weldability of steel are carbon and manganese, making option b) the correct answer. In steel alloys, carbon is a key element influencing hardness, as well as the strength and ductility of the steel. Too much carbon can make the steel brittle, hence, it is controlled carefully during steel production. Manganese serves as an important deoxidizer and a beneficial alloying element, also contributing to the tensile strength and wear resistance of steel. Consequently, these two elements, carbon and manganese, are essential in determining the overall properties of the steel including its weldability.