Alloying elements present in Hayness stel-lite, which has superior performance than high speed steel, are

Which of the following alloying elements is present in maximum percentage in high speed steel.

A

Molybdenum

B

Chromium

C

Tungsten

D

Vanadium

The main alloying elements high speed steel in order of increasing proportion are

A

Vanadium, chromium, tungsten

B

Tungsten, titanium, vanadium

C

Chromium, titanium, vanadium

D

Tungsten, chromium, titanium

Stellite preserves hardness up to a temperature of

A

350°C

B

500°C

C

900°C

D

1100°C

Stellite is a trade name for the

A

Cermets

B

Ferrous cast alloys

C

Non-ferrous cast alloys

D

Products made by powder metallurgy techniques

Constituents of stellite are

A

Zinc, copper & nickel

B

Cobalt, chromium & tungsten

C

Zinc, aluminium & nickel

D

Nickel, cobalt & vanadium

Stellite is a __________ material.

A

Ferrous

B

Ceramic

C

Cemented carbide

D

Non ferrous cast alloy cutting tool

The cutting speed for drilling aluminium, brass and bronze with carbon steel drills is _________ cutting speed for drilling mild steel with high speed steel drills.

A

Equal to

B

Less than

C

More than

D

None of these

Stainless steel is usually made by alloying the steel with

A

Copper and nickel

B

Copper and chromium

C

Chromium and nickel

D

Manganese and copper

Which of the following alloying elements reduces the formation of iron sulphide in steel?

A

Cobalt

B

Nickel

C

Manganese

D

Vanadium

Which of the following alloying elements when added in steel does not improve its lachinability?

A

Sulphur

B

Phosphorous

C

Copper

D

Lead

Alloying elements present in Hayness stel-lite, which has superior performance than high speed steel, are

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