| 300 Below, Inc.: Cryogenic treatment (deep tempering) for motor sports, firearms, softball bats, golf clubs, and musical instruments. In Decatur, IL. |
| Advisor In Metals: Home of William "Bill" Bryson, metallurgist who specializes in the theory and practice of cryogenic and heat treatment of materials. Author of a technical book on each subject. Also provides cryogenic processing services and sales of cryogenic and heat treatment equipment. In Union, New Hampshire. |
| Basics of Cryonics Metallurgy: Good basic article on how cryogenic processing works. Author unknown. Date, circa 1998. |
| Cold Fire: Custom-built cryogenic systems and treatment of items to increase strength and durability. In Largo, FL. |
| Controlled Thermal Processing Cryogenics: Cryogenic processing for racing and many industrial applications, including tools and firearms. In Chicago and Rockford, IL, Charlotte, NC, and Waltharn, MA. |
| Cryo-Temper (Durable Metal Products Company): DMP manufactures industrial cryogenic tempering systems for both high-temperature and low-temperature use. |
| Cryoforce, L.C.: A manufacturer and distributor of cryogenic processing equipment, which licenses its techniques to companies in several states. In Lenexa, KS. |
| Cryogenic Engineering: Specializes in deep cryogenic tempering, extending the useful life of tools, metal parts, plastics and other materials. In Cedar Rapids, IA. |
| Cryogenic Institute of New England, Inc.: Provider of Nitrofreeze Cryogenic Treatment services for metal treatment as well as cryogenic deflashing and deburring for industrial, commercial and recreational applications. Site includes Application Notes and Technical Articles on cryogenics. Located in Worcester, MA |
| Cryogenics International Cryogenic Systems and Processing: Cryogenics International manufactures deep cryogenic treatment systems and provides cryogenic processing for automotive racing engines, tools, musical instruments, etc. In Scottsdale, AZ |
| Cryogenics of Indiana: Thermo tempering of metals for maximum performance, durability, and life. In Zionsville, IN. |
| CryoPlus Inc.: Cryogenic treatment of all metal tooling, stamping dies, gun barrels, engine components, brass instruments. To make them more wear resistant. In Wooster, Ohio. |
| Cryopro Temper-Master: Temper-Master cryogenic processor manufacturing and tempering. Improves durability and performance of tools, musical instruments, and gun barrels. In Springfield, MO. |
| Cryotron (Canada) Ltd.: Cryogenic processing of equipment. Has a nicely detailed overview of the company's Vari-Cold cryogenic process and equipment. In Spruce Grove, Alberta, Canada. |
| Diversified Cryogenics: Cryogenic Processing improves the life of your guns, engines, instruments, and tools. Located in Minneapolis, Minnesota, United States. |
| Dynatherm Alloys -- Deep Cryogenics: Cryogenic treatment of metals, especially engine parts. In South India. |
| Fountainhead Cryogenic Processing: Deep cryogenic processing and tempering of all your tooling and wear parts. In York PA. |
| Frozen Solid: Deep Cryogenic Processing of most ferrous and non-ferrous materials to increase durability and wear resistance. Located in Suffolk, England |
| Integrated Cryogenic Systems Inc.: A cryogenic tempering treatment company that increases the life of tools, equipment, parts and materials. In Calgary, Alberta, Canada. |
| Leading Edge Cryogenics, Inc.: Leading Edge Cryogenics has pioneered cryogenic process engineering, with three patents on the process used to treat spark plugs, brake pads, and orthopedic devices. In Camp Verde, Arizona. |
| Metal Science Services: Computer-controlled cryogenic processing and heat treating services that enhance steel performance for tooling, motor sports, knives, and firearms. Site also explains the science supporting cryogenic processing. In Driftwood TX. |
| NW Cryogenics Cold-treatment Services: Cryogenic processing of metals, composites, electronics and some polymers. In Littlerock, California. |
| One Cryo: Cryogenic tempering treatment services for auto racing, tooling, firearms, golf clubs and musical instruments - Seattle, Washington and Wasilla, Alaska |
| Role of Eta-carbide Precipitations in the Wear Resistance Improvements of: 1994 technical article (from the journal ISIJ International) which investigates the wear resistance and the microstructure of tempered alloy tool steels after cryogenic treatment. |
| TechSpec, Inc. Cryogenic Treatment Center: TechSpec Inc. is a Deep Cryogenic Treatment Center, which improves the performance of musical instruments, tools, dies, guns, golf clubs, bearings, engines, hammermills, and rotors. In Kansas City MO. |
| Texas Machine-Tool International: Machine tool sales and service. Also offers cryogenic treatment of tools to make them last longer. In Waco, Texas. |
| The Brass Bow: Specialists in the cryogenic freezing of musical instruments. Very good explanation of the process. In Arlington Heights, Illinois. |
| ThermoDyne: Cryogenics and integrated thermal coatings for engine parts, industrial tools, and sporting equipment. In White City, Oregon. |
| York Cryogenics: Deep cryogenic processing of heat-treated steel, carbide, machine parts, auto parts, firearms, musical instruments, and some plastics. In York, PA. |
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