Founded in Detroit in 1941 by metallurgical engineer Marvin R. Scott, Detroit Flame Hardening Co. specializes in localized flame hardening and precision straightening for industrial metal parts. Its process treats only specified areas, helping limit distortion and processing time, while its Detroit headquarters is supported by facilities in Cleveland and Cincinnati. The company also manufactures a compact, portable Rockwell hardness tester developed by its metallurgy experts.
Member of the American Society for Metals International
registration
Laser Hard, IncBorn from a Meadville partnership between Peters’ Heat Treating and Phoenix Laser Solutions, Laser Hard applies robotic laser heat treating to selectively harden or temper metal surfaces. Its portable system scans complex three-dimensional workpieces and directs digitally controlled energy only where needed, helping reduce distortion and secondary machining. The company draws on more than 70 years of experience serving the tool-and-die industry and is ISO 9001:2015 accredited, certified by NSF.MEADVILLE, PA
Dowa THT America, IncEstablished in 1997, DOWA THT America processes metal components at its Bowling Green, Ohio facility and engineers industrial furnace systems for heat-treatment operations. Its fully automated processing environment includes programmable carburizing and nitriding furnaces, with daily laboratory testing to verify hardness, case depth, and metallurgical properties. Backed by DOWA Thermotech’s more than 50 years of heat-treatment and furnace-engineering experience, the company supports customers from equipment development through maintenance and production processing.BOWLING GREEN, OH
Cincinnati Steel Treating CompanyServing manufacturers from its Cincinnati-area facility since 1941, Cincinnati Steel Treating Company provides commercial heat treating that improves the durability and service life of gears, shafts, and other metal components. The company is especially known for gear hardening and for vertically processing long, slender parts with reduced distortion, while its staff includes a degreed metallurgist and an in-house laboratory. CST serves customers across the Midwest and beyond and maintains IATF 16949:2016 and ISO 14001:2015 registrations.CINCINNATI, OH
KING Tester CorporationFounded by Andrew King in 1936, KING Tester Corporation manufactures portable Brinell hardness testers and related metal-testing equipment in the USA. Its rugged testers bring a full 3,000 kgf load to large or hard-to-reach parts, while its newer KingScan® V provides automatic Brinell readings in under five seconds. KING also operates an ISO/IEC 17025:2017-accredited laboratory for ASTM-compliant calibration and repair services.PHOENIXVILLE, PA