Founded in 1945 by Walter J. Greenleaf Sr., Greenleaf Corporation manufactures industrial cutting tools and technical ceramic components, with a particular focus on tungsten-carbide and ceramic inserts and custom toolholding systems. The Saegertown, Pennsylvania company moved into manufacturing in 1960 and was first to bring CVD-coated carbide inserts to the U.S. marketplace in 1969; it now serves customers in more than 60 countries from six ceramic-production facilities totaling 140,000 square feet. Greenleaf is also known for pioneering whisker-reinforced ceramic inserts and holds more than 70 pending or issued patents across North America, Europe, and Asia.
ISO 9001 Certified
General Carbide CorporationFounded in Greensburg in 1968, General Carbide Corporation makes finished tungsten-carbide and steel tooling, wear parts, and precision components through a vertically integrated operation that takes materials from powder to polish. The family-owned, woman-owned company remains under the leadership of founder Premo Pappafava’s daughter, Mona Pappafava-Ray, and employs more than 250 people across four facilities. Its ISO 9001:2015-certified production includes a 50,000-square-foot finishing plant and serves customers in more than two dozen industries worldwide.GREENSBURG, PA
CERATIZIT S.ACERATIZIT S.A. is a high-technology engineering group that develops and produces cutting tools and hard-material solutions, including cemented carbide products. It manages the cemented-carbide production chain from powder preparation through forming, sintering, finishing and surface treatment, and states that it is active in more than 80 countries and 25 industries.LATROBE, PA
Johnston's Quality CarbideFounded in 1995 by brothers Sam and Richard, family-owned Johnston’s Quality Carbide in Latrobe, Pennsylvania, precision-grinds and polishes tungsten carbide and ceramic wear parts and tooling. The company grew from a small grinding shop into an 80,000-square-foot facility, combining modern equipment with a craftsman’s work ethic and close customer support. JQC performs precision inspection on every job and also assists with design when it can improve tool life.LATROBE, PA
Highland Carbide Tool Company, IncHighland Carbide Tool Company, Inc. is a family-owned carbide tooling manufacturer that has been in business since 1946. It produces specialty tooling and cutting solutions for mills, foundries, and manufacturing facilities, drawing on more than 70 years of experience in tool production. The company combines automated manufacturing technology with the craft skills of its machinists to develop custom tools for customer applications.IRWIN, PA