Engineering Materials Cobalt in steel Refines grain size and produces less tendency to carburisation, improve corrosion and heat resistant proper ties Improves wear resistance, cutting ability and toughness Gives ductility, toughness, tensile strength and anti corrosion property Improves cutting ability and reduce hardenability Refines grain size and produces less tendency to carburisation, improve corrosion and heat resistant proper ties Improves wear resistance, cutting ability and toughness Gives ductility, toughness, tensile strength and anti corrosion property Improves cutting ability and reduce hardenability ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The hardness is the property of a material due to which it Breaks with little permanent distortion Can cut another metal Can be rolled or hammered into thin sheets Can be drawn into wires Breaks with little permanent distortion Can cut another metal Can be rolled or hammered into thin sheets Can be drawn into wires ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials According to Indian standard specifications, plain carbon steel designated by 40 C8 means that the carbon content is 0.4 to 0.6% 0.6 to 0.8% 0.0004 0.35 to 0.45% 0.4 to 0.6% 0.6 to 0.8% 0.0004 0.35 to 0.45% ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials When steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of Ferrite and pearlite Mainly ferrite Mainly pearlite Pearlite and cementite Ferrite and pearlite Mainly ferrite Mainly pearlite Pearlite and cementite ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Corundum contains more than 95% MgO Al2O3 Steel SiO2 MgO Al2O3 Steel SiO2 ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The machinability of steel is improved by adding Nickel and chromium Nickel Sulphur, lead and phosphorus Chromium Nickel and chromium Nickel Sulphur, lead and phosphorus Chromium ANSWER DOWNLOAD EXAMIANS APP
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