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• 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.
• Alpine Cryogenics, Inc. - Cryogenic processing of materials, including tools, auto parts, and rifle barrels. One page has a useful research article with photographs. In Moscow, PA.
• American Cryogenics, Inc. - Microprocessor controlled deep cryoheat treatment of tool and high speed steels. Custom cryoprocessor design and fabrication. In Waukesha, WI
• Atlantic Cryogenic Solutions, Inc. - "Advanced" Cryogenic Processing (series of cooling + long soaks with heat). Specializes in processing for industrial and manufacturing applications as well as for distributors/mfgrs. of products. Detailed site. In Joppa, Maryland.
• Basics of Cryonics Metallurgy - Good basic article on how cryogenic processing works. Author unknown. Date, circa 1998.
• 300 Below, Inc. - Cryogenic treatment (deep tempering) for motor sports, firearms, softball bats, golf clubs, and musical instruments. In Decatur, IL.
• The Brass Bow - Specialists in the cryogenic freezing of musical instruments. Very good explanation of the process. In Arlington Heights, Illinois.
• Carboteh Engineering: Cryo Cool - Cryogenic tempering of brake rotors for automotive road racing and manufacturer of racing brake pads. In Ft. Lauderdale, Florida.
• 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.
• Crygenius - Extending the life of tools though cryogenic treatment. Located Durban, South Africa
• Cryocon, Inc. - Deep Cryogenic Tempering (DCT) of metals, alloys, and other synthetic materials. The only publicly traded Cryogenics company (OTC BB:CRYQ). In Ogden, Utah.
• Cryocool, Inc. - Cryogenic processing. The site has a nice animation explaining the process. In Crown Point, IN.
• 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 Tempering services for industrial, commercial and recreational applications. Site includes Application Notes and Technical Articles on cryogenic tempering. In Worcester, MA. Site not currently viewable with some versions of Netscape.
• Cryogenic Solutions - Deep cryogenic treatment to improve the life and performance of industrial tooling, racing engines and parts, firearms, and sporting goods. In Savannah, Georgia.
• 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.
• Cryogenics Technology Pte Ltd - Provides deep Cryogenics treatment services and offer sales of PID controlled Cryogenics Thermal Chamber. The site includes several detailed discussions of the process. In Singapore.
• 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.
• Cryo-Tech Inc. - Cryo-Tech uses a different "dry" technique of cryo-hardening materials invented in 1966 -- cryogenic temperatures are used, but the material never contacts the liquid nitrogen. In Hazel Park, Michigan.
• Cryo-Tech Ltd. - Sale of cryogenic processors to Asia and Pacific areas. Also provides cryoprocessing services at several sites throughout New Zealand.
• Cryo-Temper (Durable Metal Products Company) - DMP manufactures industrial cryogenic tempering systems for both high-temperature and low-temperature use.
• Cryotreatment: Panacea or Black Magic? - A detailed discussion of the pros and cons of cryogenic treatment, from Cold Facts, the quarterly magazine of the Cryogenic Society of America, Spring 1996.
• 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.
• Nitrotech - Controlled freeze tempering (cryogenic processing) of metal tools for the steel industry, paper industry, motor sports, and golf. An explanation of the process is included. Phoenix, Arizona.
• NW Cryogenics Cold-treatment Services - Cryogenic processing of metals, composites, electronics and some polymers. In Newberg, OR.
• One Cryo - Cryogenic tempering treatment services for auto racing, tooling, firearms, golf clubs and musical instruments - Seattle, Washington and Wasilla, Alaska
• One Cryo hardened softball bats - Yes, you can use cryogenic processing to hit home runs.
• 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.
• Sub Zero Cryogenics, Inc. - Deep cryogenic stress relieving / tempering services, which this company calls Thermal Molecular Stabilization. In North Branch, MN.
• 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.
• Temper Master Cryogenics - Cryogenic treatment center and processor manufacturing. Also manufactures an oven for heat treating. In Calgary, Alberta, Canada.
• ThermoDyne - Cryogenics and integrated thermal coatings for engine parts, industrial tools, and sporting equipment. In White City, Oregon.

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