CSZ's T-Series Production Chilling Chambers are the preferred choice of heat treating companies. These chambers are often used to chill steel to -84°C (-120°F) that will then transform retained austenite to martensite. This relieves internal stress, stabilizes dimensions, and increases hardness and durability of the steel part. This top-loading, heavy-duty industrial freezer is designed to hold up in harsh heat treat environments. T-Series freezers circulate high volume air for uniform cooling throughout the freezer.