In both steel classification systems, the first number often, but not always, refers to ____.
A) the most appropriate type of welding
B) the basic type of steel
C) the melting point
D) the carbon content

Question

Quizplus · Accepted Answer

In both steel classification systems (AISI and SAE), the first number refers to the basic type of steel. For example, 1xxx steels are carbon steels, 2xxx steels are nickel steels, and so on. The first number does not refer to the most appropriate type of welding or the melting point, and while it may provide some indication of the carbon content, this is not its primary purpose.

In Both Steel Classification Systems, the First Number Often, but Not