Heating of loads in modern plasma nitriding furnaces is carried out by a combination of the radiative heat transfer from the wall or furnace resistance heaters and heat transfer from the glow discharge. We will look at the effect of the workpiece emittance on its temperature.

Hardenability is the ability of steel to partially or completely transform from austenite to some fraction of martensite at a given depth below the surface when cooled under a certain condition. The “gold standard” test for all hardenability results has always been the “Jominy End-Quench Test.”