steel
1. What is a ferrous metal?
A ferrous metal is a metal has iron
2. What is the carbon content of the following metals?
A, low carbon /mild steel (0.1%-0.3%)+
B, medium carbon (0.35%-0.5%)
C, High carbon (0.5%-1.5%)
D, cast iron (2.5%-4%)
3. What properties would you consider when choosing a steel?
Harness ,strength, toughness
4. What does “Hard” steel mean?
It means it is hard to be marked. (Titanium)
5. Name 3 ways of heat-treating steels and write a description of
each
A, annealing-heat to rod + cool slowly
B, quenching – heat to rod +cool quickly
C, tempering – heat moderately + cool slowly
6. What are the benefits of heat treating steel?
Changes the molecular and make up of the steel to increase its
hardness, toughness and or brightness.
7. What does UB mean? （UB,UC ,PFC,RHS,CHS,ANGLE）
UB: universal beam
PFC: parallel flange channel
CHS: circular hollow section
UC: universal column
RHS: rectangular hollow section
8. Which type of metal/steel would you use as a road manhole lid?
Cast iron
9. What is bronze made of?
Copper and Tin