Elongated MnS with a Pb tail - incorrect, lead is only added to
steels that require a high level of machinability. Try again.
Al2O3- incorrect, alumina particles are formed during the de-oxidation process
and are hard and angular inclusions, modern steel making for low carbon and low
alloy steel grades such as these strip steels mean that alumina particles are
virtually never found in these steel grades. Try again.
Elongated MnS - Correct
TiN - incorrect, large TiN particles are only
seen in Ti micro-alloyed steels where Ti in excess of the level required to
produce a fine distribution of precipitates has been added. Try again.
Globular MnS - incorrect, globular MnS inclusions would be seen in the continuous cast steel
but the hot rolling process causes the MnS inclusions to become elongated.
Try again.
Greater than 700 MPa - I'm afraid that you are well off with this selection. Try again.
Click on your answer to check and make a note of the answer on your notepad.
If you have not already
reviewed the section on cleanness / consistency do so now by
clicking here
Note that inclusions of any variety are extremely few and far between.
NOTEPAD
The 3 most important properties for a drinks can are:
Cleanness / consistency
Formability
Cost
Number of steel cans used for soft drinks and beer in the UK per year:
3 - 5 billion (more accurately 3.5 billion)
Type of inclusion that may be formed in drinks can strip steel:
Elongated MnS
What type of inclusion can occur in strip steels used
for the drinks can market? 
Elongated MnS with a Pb tail - incorrect, lead is only added to
steels that require a high level of machinability. Try again.
Elongated MnS - Correct 
