Cryogenic Stress Relieving

We use liquid nitrogen to super-cool metals to reduce the molecular misalignment that creates thermal and physical stress leading to fatigue.

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Strength and Toughness From the Cold

We subject metals to precise temperatures in a chamber reaching about -300°F (-184°C) to induce the changes that result in lower distortion, increased strength, and improved wear and corrosion resistance.

Advantages of Cryogenic Metal Stress Relief

Alters the molecular structure of the metal, not just the surface
Reduces residual stresses and stress cracking
Improves toughness, dimensional stability, and wear properties
Increases stability at room temperature
Reduces coefficient of friction and surface roughness
Enables easier machining to tighter tolerances
Increases dimensional stability
Reduces stress fracturing
Increases abrasion and impact resistance
Improves dielectric properties
Increases durability and lifespan

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FAQs

Liquid nitrogen lowers the temperature inside the tank to -300 °F (-184°C) and slowly returns to room temp. The target temperature for parts inside the take depends on the material used.

Advantages of cryogenic stress relief include:

Alters the molecular grain microstructure of the entire metal part, not just the surface layer
Reduces residual stresses and stress cracking
Improves toughness, dimensional stability, and wear properties of metal parts
Gives parts greater stability at room temperature
Reduces coefficient of friction and surface roughness
Enables the machining of parts to tighter tolerances
Increases dimensional stability on critical components
Reduces stress fracturing
Increases abrasion and impact resistance
Improves metal materials’ dielectric properties
Provides for easier machining and redressing
Increases component durability and lifespan
Extended part life for lower replacement costs and reduced downtime

Cryogenic stress relief increases the density of metal materials, making them stronger and more solid. This can yield dramatic improvements in the performance, durability, and wear resistance of metal parts and components.

Parts treated via cryogenic metal stress relieving may be re-machined or re-ground indefinitely without altering the effects of the cryogenic stress relief process.