Percentages of various alloying elements present in different steel materials are given below: 1. % W ; 4% Cr ; 1% V; 5% Co ; 0.7% C 2. 8% Mo; 4% Cr; 2% V; 6% W; 0.7% C 3. 27% Cr ; 3% Ni; 5% Mo ; 0.25% C 4. 18% Cr ; 8% Ni ; 0.15 C. Which of these relate to that of high speed steel?

Percentages of various alloying elements present in different steel ma

1.	Percentages of various alloying elements present in different steel materials are given below: 1. % W ; 4% Cr ; 1% V; 5% Co ; 0.7% C 2. 8% Mo; 4% Cr; 2% V; 6% W; 0.7% C 3. 27% Cr ; 3% Ni; 5% Mo ; 0.25% C 4. 18% Cr ; 8% Ni ; 0.15 C. Which of these relate to that of high speed steel?
A.	1 and 3
B.	1 and 2
C.	2 and 3
D.	2 and 4
Answer» C. 2 and 3

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Percentages of various alloying elements present in different steel materials are given below: 1. % W ; 4% Cr ; 1% V; 5% Co ; 0.7% C 2. 8% Mo; 4% Cr; 2% V; 6% W; 0.7% C 3. 27% Cr ; 3% Ni; 5% Mo ; 0.25% C 4. 18% Cr ; 8% Ni ; 0.15 C. Which of these relate to that of high speed steel?

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