Alloy Steel Elements and Properties

Nickel Steel – The percentage of Nickel (Ni) varies from 2 to 45. 2%Ni makes steel more suitable for rivets, boiler plates, bolts and gears etc. Ni from 0.3 to 5% raises elastic limit and improves toughness. Steel containing 20% Nickel has very high tensile strength. 25% Ni makes the steel particularly stainless and might be used for I.C. engine valves, turbine blade etc. If Ni is present up to 27%, it makes the steel non-magnetic and non-corrodible. Invar (Ni 36%) and super-invar (Ni 31 %) are the popular materials for…

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