1) Effect of Nickel as alloying Element:
i) Provides toughness, corrosion resistance, and deep hardening.
ii) Increases resistance to impact
iii ) Improves tensile strength
2. Effect of Chromium as alloying Element::-
i) Improves corrosion resistance, toughness and harden ability
ii) Improves resistance to abrasion and wear
3) Effect of Silicon as alloying Element:
i) Increases Hardenability.
ii) Increases Electrical Resistivity.
4) Effect of Molybdenum as alloying Element:
i) It increases red hardness of steel.
ii) Increases hardness, hardenability.
iii) Increases wear resistance,
iv) Reduces temper brittleness.
iv) increases strength.
V0 Mo-carbides help increase creepresistance at elevated temps