Our Process

At Atmosphere Heat Treating, our process is engineered for precision, repeatability, and superior results. Using a controlled-atmosphere environment and a specialized austempering cycle, we deliver mechanical properties that outperform traditional quench-and-temper methods.

Instead of quenching parts in oil or water at room temperature, we use a molten salt bath at elevated temperatures—typically between 450°F and 750°F. This produces a bainitic or ausferritic microstructure, rather than martensite, resulting in components with exceptional toughness, ductility, and fatigue resistance.

The outcome is a stronger, more resilient material with up to 15 % higher tensile strength, 24 % greater yield strength, and up to ten times more impact resistance compared to conventional processes - all while maintaining consistent hardness and dimensional control.

Austempering is a heat-treating process for ferrous metals that produces a bainitic microstructure rather than martensite, resulting in improved mechanical performance.

This process provides:

• Higher ductility

• Resistance to shock and fatigue

• Uniform hardness and improved dimensional stability