Question 2
A plain carbon steel contains 0.25% carbon.
Which application is this steel most suitable for?
That is it. Step through the hints below to see why.
Not quite. Train wheels are a medium carbon steel application. Your 0.25% C steel is low carbon.
Not quite. Cutting tools are a high carbon steel application. Your 0.25% C steel is low carbon.
Not quite. Springs are a high carbon steel application. Your 0.25% C steel is low carbon.
Plain carbon steels in order of carbon content, with the low carbon limits. The dashed marker is your 0.25% C steel. The orange tag carries the option you are testing to the band it belongs to.
Your steel: 0.25% C, which is low carbon (0.07 to 0.30% C).
Testing (): , a steel application.
Car body panels are a low carbon steel application, the same band as your steel. Low carbon steel is soft and ductile, so it presses easily into panel shapes. This is the one.
Train wheels are a medium carbon steel application. The tag lands one band to the right of your steel. Not this one.
Cutting tools are a high carbon steel application. The tag lands two bands to the right of your steel. Not this one.
Springs are a high carbon steel application. The tag lands two bands to the right of your steel. Not this one.
0.25% C is low carbon steel (0.07 to 0.30% C), and car body panels are a low carbon steel application.
Low carbon steel is soft and ductile, so it presses easily into panel shapes.
0.25% C is low carbon steel (0.07 to 0.30% C), and car body panels are a low carbon steel application.
The past QCAA questions this one was modelled on
Only mark this done when you could do it without help. Reading the solution does not count.
A Tangent Tuition mock exam question. It is not a past QCAA question, and Tangent Tuition is not affiliated with the QCAA.
Spot a mistake on this page? Report it