Select Page


The cryogenic processing can be successfully used in the field of defense and military applications thanks to its ability to improve stability, stress relief, and flex-fatigue. 300 Below specializes in stress relief and stabilization for components for many military and defense applications.

What are the most common problems with the military parts?

  • Corrosion
  • Cycle fatigue
  • Erosion
  • Weak moisture resistance
  • Weak dust and sand particles resistance
  • Extremely hostile working environments
  • Crack propagation failures

What Military and Defense Applications can benefit the most from cryogenic treatment?

  • Military aviation assets (including UAV aircraft – unmanned aerial vehicles)
  • Military firearms
  • Military brake rotors on planes, wheeled vehicles, and tracked vehicles
  • Military tanks
  • Military armored personnel carriers (APCs)
  • Military optics

What are cryogenic processing benefits for your defense and military components?

1. Stress Relief and Stabilization
2. Abrasive Wear Resistance
3. Enhanced Machinability
4. Cycle Fatigue Enhancement
5. Corrosion Inhibition
6. Heat Transmissivity

What is cryogenic processing?

  • An extension of the heat treatment process
  • Ultra low temperature treatment of metals using liquid nitrogen released as a gas
  • Computer controlled process ensuring descent and ascent of temperatures in equilibrium with parts
  • The most cost effective method to extend life and reduce wear for all military and defense related parts


Deep Cryogenic Processing for Optical Reconnaissance & Aerospace Components

300 Below specializes in stress relief and stabilization for optical components for many aerospace applications, including satellites and atmospheric vehicles.  The enhancements are significant for a nominal cost and result in a part that has increased stability, stress relief, and flex-fatigue enhancement.  The process is a one-time permanent change to the molecular structure for the component subjected to deep cryogenic processing.  300 Below also has the ability to perform cryogenic tempering by adding a triple-temper following our cryogenic process, even for 6065-T6 aluminum, 7075 aluminum, as well as titanium, Hastelloy, Inconel, and other exotic aerospace component metallurgies.

Closeup of a Drone Camera and Sensor Pod Module.

Optical housing for drones.

This process has been perfected since 1966 when we first started in our business, and is utilized as a NASA-specification called for by major aerospace vendors.  300 Below remains the single sole-source provider for many aerospace projects for having created its unique aerospace processing profiles and introducing them into the defense / aerospace community.  ASM has published our cryogenic processing technology in the ASM Heat Treater’s Guide, considered by most metallurgists to be the Bible of Materials Science, and we have since extended its application directly into the defense community.  300 Below has been a member of NDIA, the National Defense Industry Association, for many years and we contribute to emerging technology research with this group along with Argonne National Laboratories, NASA Langley Research Center, Lawrence Livermore National Laboratory, and the Naval Nuclear Retrofit Facility.

The Process of Deep Cryogenic Stress Relief and Stabilization

Residual stresses remain within a part after the original source of its stresses (heat gradients or external forces) have been removed.  These residual stresses in aerospace components are significant due to substantial machining needed to remove mass from the component.  Residual stresses may also be caused by machining from end mills, taps, reamers, bores, broaching, and drilling operations.  These residual stresses are varied and include three primary types of stress: compressive stress, tensile stress, and hoop stress.  Aerospace components and optical benches benefit from deep cryogenic processing due to the principles of thermal-mechanical compression and expansion.  300 Below’s process is unique because the entire mass of the component part (core AND surface) transitions through a full 600 degree range (-300°F to +300°F) creating stress relief (technically through uniform stress being imparted throughout the three dimensional structure) instead of erratic or differential stress creation, commonly imparted by manufacturing processes.

We give your part a three martini lunch: it’s totally relaxed when you get it back.  And after an aerospace business luncheon with us, you will be, too.

We’re the first, oldest, and largest deep cryogenic processor on the planet, serving Americans around the world through better innovation and technology since 1966.

Call us at 800-550-2796 to discover more stress-free business opportunities for your defense and aerospace components!