Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.

The presence of element Carbon.

Explanation:

The diagrams Steel- Carbon usually show the percent the carbon vs the phases of the steel.

In the middle you increase the carbon percent the steels are not commercial because they are no malleables ( Hardennes).  

By the other hand according the application of the steel you need to look the diagram Fe-Cr.

x+2 because it just doubles hon so the pattern can actually tell you the expression.

so for example,

if x=2 then 2+2 is 4

if x=4 then 4+4 is 8

and so on and so forth.

i really hope that this makes sense and you out in a way hon: )

answer:

the answer is d

explanation: