If the heat-treat process is done correctly, it is possible to obtain 95% martensitic transformation; but the typical result is 70% or less and many tools will be below 50%. The cryogenic process completes the transformation to near 98%-99% depending on the material.
Martensite is the fine-grained structure that transforms from austenite during the quench cycle. It is this desirable fine grain that should be found in all heat-treated tool steels. Cryogenic Treatments are common in precipitation hardening steels where dimensional stability is required.
Cryogenic treatments are used to further stabilize various steels, commonly some stainless and aluminum alloy materials. They are typically used to reduce the percentage of retained austenite in tool steels. The standard process is to treat materials between -200F and -300F for 12 -16 hours depending on the material. Many materials require a tempering process after the cryogenic process, which we perform in our vacuum tempering systems.
Maximum Working temperature is -300F
Working Dim: 30” x 30” x 60”; Load capacity 4,000 lbs.
Valves, rotors, engine block, telescopic equipment