What is common brass?
	63/37 brass.
	What is the annealing temperature for brass?
	500-550°C.
	Which copper alloy has the highest ductility?
	70/30 Brasses CZ106 (CW505L)
	Are the Brasses much weaker than steels?
	No, high strength brasses have tensile strengths up to 770 MN/m2 which is much better than many steels.
	What is the difference between brass and bronze ?
	Brasses are copper-zinc alloys, bronzes are copper-tin alloys.
	What are the advantages of copper as a Busbar material compared to aluminium?
	Higher conductivity, higher operating temperature and low contact resistance.
	Is brass resistant to stress-corrosion cracking?
	Yes, if cold worked components are stress-relieved at 250-350°c for ½ to 1 hour.
	What does grain size mean, why is it important for copper & copper alloys ?
	Copper like other metals is made up of millions of tiny grains. In the case of copper which is to be worked these range in size from 0.01 to .045mm. The grain size is particularly important where copper is to be fabricated by cold working.

	Which Grade of copper should be used where welding is required?
	A Phosphorous Deoxidized Copper.
	Will commercial grades of copper become hard (like steel) if they are cooled rapidly after heating?
	No. Copper is not susceptible to precipitation hardening.
	What effect does heavy cold working have on the electrical conductivity of copper?
	It reduces by about 3%.
	Which casting processes are available for copper and copper alloys?
	Water cooled book mould for slab and/or Horizontal continuous casting line for strip
	Can copper and brass be recycled?
	Yes
	What is the solution treatment temperature?
	This term applies to alloys such as Cu-Be and Cu-Cr which are strengthened by age (precipitation hardening). It is the temperature (900-1000°C) to which the alloys are heated prior to quenching and aging.