Martensitic steel in its un-tempered hard form is much brittle for use. One of the methods to alleviate this difficulty is tempering. Tempering of quenched parts is required for majority of its applications. To get toughness tempering includes heating of steel at less than the lower-critical temperature, which is often 400-1105F or 205-595C as per […]

When iron ore is melted into useful metal, a specific amount of carbon is generally alloyed with the iron. The amount of carbon considerably has an effect on the properties of metal. Charcoal is almost pure carbon.               Cast Iron: – When the carbon material is more than 2%, the metal is known as […]