Q. In low carbon steels, presence of small quantities of sulphur improves

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Q. Cast iron is used in those parts which are subjected to shocks.

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Q. The aluminium alloy made by melting aluminium with 2 to 10% magnesium and 1.75% copper is called

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Q. Duralumin contains

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Q. Age hardening is related to

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Q. The addition of which of the following improves machining of copper?

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Q. When a medium carbon steel is heated to coarsening temperature,

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Q. Phosphorus is added in low carbon steels to raise its yield point.

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Q. The steel produced by cementation process is known as __________ steel.

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Q. Duralumin has better strength than Y-alloy at high temperature.

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Q. Normalising of steel is done to

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Q. A steel containing 12 to 14% chromium and 0.12 to 0.35% carbon is called martensitic stainless steel.

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Q. When a steel containing __________ 0.8% carbon is cooled slowly below the lower critical point, it consists of ferrite and pearlite.

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Q. Shock resistance of steel is increased by adding

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Q. In low carbon steels, __________ raises the yield point and improves the resistance to atmospheric corrosion.

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Q. A steel containing 16 to 18% chromium and about 0.12% carbon is called

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Q. The alloy, mainly used for corrosion resistance in stainless steels is

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Q. The temperature required for full annealing in hyper-eutectoid steel is

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Q. Chromium when added to steel __________ the tensile strength.

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Q. Which of the following is added in low carbon steels to prevent them from becoming porous?

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