Steel

Question 1

What is Steel?

Answer 1

Steel is a mixture of Iron and Carbon (alloy)

Question 2

Plain Carbon Steel is broken up into 3 parts what are they?

Answer 2

Low-carbon, Medium Carbon, and high-carbon Steel

Question 3

What are some Qualities of Low Carbon?

Answer 3

• %Carbon < 0.25%
• Good Strength
• Good Ductility (easy to deform)
• Structural steel section
• Sheet metal
• Cheap
  (Not hardened by heat treatment) (heating and quenching)

Question 4

What are some Qualities of Medium Carbon?

Answer 4

• %Carbon 0.25%-0.6%
• Stronger but harder to deform and cut
• Used for machine parts (gears, shafts, camshafts…)
  (Responds to hardening by heat treatment)

Question 5

What are some Qualities of High Carbon?

Answer 5

• %Carbon 0.6% - 1.4%
• Used for tools and dies
  (Responds to hardening by heat treatment)

Question 6

What are the Designations of Tool Steels?

Answer 6

H: Hot working tool steels
W: Water-hardening tool steel
O: oil-hardening tool steel
A: Air-hardening tool steel
T: high-speed steel based on Tungstun
M: High-speed steel based on molybdenum
S: Shack resistance tool steel