If the task for you is to improve the strength of steel at elevated temperature, which one of the following alloying element would you prefer :

If the task for you is to improve the strength of steel at elevated te

1.	If the task for you is to improve the strength of steel at elevated temperature, which one of the following alloying element would you prefer :
A.	Copper
B.	Tungsten
C.	Aluminium
D.	Zinc
Answer» C. Aluminium

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If the task for you is to improve the strength of steel at elevated temperature, which one of the following alloying element would you prefer :

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