Therm-Tech of Waukesha, Inc. - Waukesha, WI (Serving Minnesota)
Custom Manufacturer, Service Company
AS 9100:2009 and ISO 9001:2008 certified. Austempering heat treating services for forgings, castings, machined parts and stampings. Capabilities include annealing, stress relieving, blasting, hardening, straightening, nitriding, quenching, carburizing, carbonitriding, normalizing and mechanical testing. Aerospace, agriculture, mining, heavy truck, oil field, railroad and tool and die industries served.
www.thermtech.net/metal-heat-treating-servi...

Med-Tek, Inc. - Minneapolis, MN
Custom Manufacturer, Service Company
Heat treating services including austempering, salt bath and vacuum carburizing heat treating services. Different types of materials are used. Products and parts of any sizes can be handled. Heat treating service capabilities also include aging, annealing, brazing, carbonitriding, hardening, nitriding, martempering, spheroidizing and tempering steel heat treating. Other services such as normalizing services, quenching services, straightening services, stress relieving services, stabilizing services, engineering services, laboratory services, testing services and thermocouple monitoring services also available.
www.med-tekinc.com/services.htm

Whirltronics Inc. - Buffalo, MN
Manufacturer, Custom Manufacturer, Service Company
ISO 9001:2000 certified heat treating including austempering services. Materials include steel, stainless steel, carbon steel, tempered steel, spring steel, nickel steel, cobalt steel, aluminum, copper, nickel cobalt alloys & nickel & nickel alloys. Capabilities include stamping & shearing for 2 in. to 15 in. width & 0.032 in. to 0.375 in. thickness, powder coating, forming, blanking, engineering, painting, packaging, tooling & prototyping.

Bodycote Thermal Processing - Eden Prairie, MN
Custom Manufacturer, Service Company
ISO 9000: 2000.Thermal processing of various materials. Processes available include annealing, hardening & tempering, nitriding, induction heat treatment & vacuum heat treatment. Markets served include aerospace, automotive, chemical, construction, defence, mining, medical engineering, precision tooling, precision casting, power generation, agricultural, petrochemical, pharmaceutical, consumer products, rail, & tooling.

Midwest Metal Products, Inc. - Winona, MN
Manufacturer, Custom Manufacturer, Service Company
Heat Treating: Controlled Atmosphere Heat Treat Ovens To Carburize Or Harden Machined Parts With No Scale, Tempering Ovens, Induction Hardening Equipment, Normal Atmosphere Box Furnaces. Grinding: 48" Blanchard Grinder