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 […]

It is the technique for removing or reducing internal stresses that are created within a metal. The reason for these stresses may be many, including non uniform cooling to cold working. Stress-relieving is normally performed by heating the metals at a temperature lower than critical temperature, which is then followed by uniform cooling. This stress […]