Question

25. How the mechanical properties of steel like strength, toughness, ductility are affected?

By tempering

By hardening

By annealing

By normalizing

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Answer 1

Explanation:

whay the melting point of bearing

Answer 2

How the mechanical properties of steel like strength, toughness, ductility are affected?

• By tempering
• By hardening
• By annealing
• By normalizing

ANSWER:-

• By tempering is the correct option.

• The mechanical properties of steel like strength, toughness, ductility are affected by tempering.

EXPLANATION:-

• Steel has a number of properties which comprises hardness, toughness, tensile strength, yield strength, elongation, fatigue strength, corrosion, plasticity, malleability and creep.

• The mechanical properties of steel like strength, toughness, ductility are affected by tempering because without tempering, the structure of the steel continues to be very brittle.

• Tempering comprise heating of the steel furthermore to a specific temperature which are lower than the critical temperature, and then they are re-quenched in water, air, or oil for m fixing the “Temper” at the appropriate degree of toughness and hardness.

• The properties of steel are inferred by two factors that are the chemistry of the metal which means the alloys or elements that are melted or mixed together and the heat treatment of the steel called tempering.

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