State the effects of chromium and molybdenum on the properties of steel.

State the effects of chromium and molybdenum on the properties of steel.
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1 Answer

Answer :

1) Chromium:

i) It improves Ductility

ii) It is added in different proportions upto 18 %

iii) Below 1.5 % addition increases Tensile Strength

iv) 12 % addition gives high Corrosion Resistance

v) It improves Hardenability & Toughness simultaneously

2) Molybdenum:

i) It improves Hardness

ii) It improves Wear Resistance

iii) It improves Thermal Resistance

iv) It gives ability to maintain Mechanical Properties at Elevated Temperatures
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