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Crucible Industries
Published: July 28th, 2025
Crucible Industries has a long and complex history that began in the 18th century. Its roots trace back to Sheffield, England, where the Sanderson Brothers were manufacturing crucible steel as early as 1776. The crucible process involved melting steel in small batches using clay or graphite pots at very high temperatures. Though time-consuming and labor-intensive, this method allowed for greater purity and consistency in the steel, which was especially valuable for tools, dies, and cutting instruments.
In 1876, the Sanderson Brothers brought their steelmaking operations to the United States by purchasing Sweet Iron Works in Syracuse, New York. This location provided good access to transportation routes like the Erie Canal and nearby railroads. By the 1880s, the facility in Syracuse had become well-equipped, using a gas-fired furnace that could hold dozens of crucibles at a time. Workers known as “teemers” poured molten steel from the crucibles into molds, braving extreme heat in a process that was dangerous and physically demanding.
In 1900, the Sanderson Brothers joined twelve other American steel companies to form the Crucible Steel Company of America. It was a strategic merger meant to compete with the growing influence of U.S. Steel and other large firms. C. H. Halcomb Jr, who had been with Sanderson, became Crucible’s first president. In 1902, he left to start his own steel company, Halcomb Steel, and installed the first electric arc furnace in the United States, a major development in steelmaking. Crucible later bought Halcomb’s company in 1911, and combined the operations into one of its largest plants.
- In 1876, the Sanderson Brothers purchased Sweet Iron Works in Syracuse, New York
- In 1900, the Sanderson Brothers and twelve other steel companies merged to form the Crucible Steel Company of America
Through the first half of the 20th century, Crucible Steel grew to become a major player in specialty and tool steel production. By 1939, it was the largest tool steel manufacturer in the country, with multiple mills across several states and over 400 grades of steel. The company also owned two coal mines, a water company, and a split interest in an ore mine. During World War II, the company operated at peak capacity, producing around 75,000 tons of steel annually for military and industrial use.
In 1955, Crucible was among the first to produce vacuum arc remelted steels commercially. This process allowed for better control of impurities and was a significant improvement for high-performance applications. In the 1960s, the company continued to expand its technology and product range.
In 1968, Crucible Steel was bought by Colt Industries and was renamed Crucible Specialty Metals. In 1985, a management and employee buyout turned it into Crucible Materials Corporation. The company maintained production facilities in New York, Pennsylvania, Wisconsin, and Kentucky. During this time, Crucible supplied materials for several notable projects, including donating corrosion-resistant steel used in the renovation of the Statue of Liberty and producing the titanium alloy used for the Jarvik-7 artificial heart.
By the late 1980s and into the 1990s, the American steel industry was in decline. Global competition, rising costs, and changes in manufacturing led to layoffs and plant closures across the country. Crucible was affected like many others, and while it made some attempts to expand, such as opening a facility in Canada and working closely with General Motors, its financial position remained unstable.
- In 1968, Crucible Steel was purchased by Colt Industries and was renamed to Crucible Specialty Metals
- In 1985, Crucible supplied the titanium used in the Jarvik-7 artificial heart (pictured above)
In 2004, Crucible began offering knife-specific steels under its own name. This was when the company’s most recognized innovation came into focus: Crucible Particle Metallurgy (CPM). CPM is a type of powder metallurgy in which steel is atomized into powder, then compressed and heat-treated under high pressure to form a uniform billet. This method allows for very fine, even distribution of carbides and leads to steels with high wear resistance, good edge retention, and improved toughness. CPM-S30V, CPM-S35VN, and later CPM-S45VN became staples in the knife-making world. These steels were developed in part through a collaboration with knifemaker Chris Reeve.
Despite their success in specialty markets like knives, Crucible struggled financially. In 2009, the company filed for Chapter 11 bankruptcy. That same year, it was acquired by JP Industries of Cleveland and reformed as Crucible Industries LLC. The company restarted operations at the Solvay, New York, plant, formerly the Sanderson-Halcomb Works.
For several years, Crucible continued producing CPM steels and supplying markets ranging from aerospace and automotive to industrial tooling and cutlery. But in December 2024, the company again filed for bankruptcy. By early 2025, it was announced that the plant in Solvay would close, ending more than a century of steel production at the site.
In February 2025, the French steel company Erasteel purchased many of Crucible’s key assets out of bankruptcy. This included trademarks, patents, inventory, and equipment related to the CPM process. Erasteel acquired the rights to continue producing and selling Crucible’s powder metallurgy steels, such as CPM S30V, S35VN, S45VN, 154CM, M4, 3V, and MagnaCut.
Niagara Specialty Metals (NSM), a longtime rolling and processing partner, agreed to help manufacture and distribute these steels in the U.S. and to ensure that production of CPM steels would continue under familiar names. Some steels, like CruWear and S90V, had to be renamed due to intellectual property agreements, but most CPM grades retained their names and compositions. CPM CruWear is now being marketed as NSMwear, and CPM S90V has been renamed NSM 90PM.
- In 2025, Erasteel purchased many of Crucible's key assets
- Niagara Specialty Metals agreed to help manufacture and distribute the steels in the U.S.
Crucible’s history covers nearly 250 years from its earliest British origins through its peak as an American industrial force and finally into its modern transformation. It was one of the first to develop advanced processes like vacuum arc remelting and powder metallurgy, and it played a significant role in supplying specialty steels across a wide range of industries. Although the company no longer exists in its original form, its impact on metallurgy, especially through CPM steels, continues to be significant. Its name may be gone from the buildings, but the materials it pioneered are still in demand around the world.
Crucible Industries Steels
High
Speed Steels
M2, M4, M50
Precipitation Hardening
Stainless Steels
17-4, 17-4 SUPER X, VAR 15-5
Stainless 300 Series
303, 303 SE, 304L, 316L, 321, 347, Alloy 20, UNS 21800, XM-19
Written By
Drew Clifton
Drew is the lead writer for SMKW's Knives 101, crafting informative and engaging content for the world’s largest knife store. With expertise in knife history, design, and functionality, Drew delivers articles and product descriptions that educate and inspire knife enthusiasts at all levels.
Expert Reviewed
T.C. Barnette
T.C. Barnette is a dynamic media personality and the esteemed spokesperson for SMKW (Smoky Mountain Knife Works), where his passion for knives intersects with his captivating on-screen presence. With a magnetic charisma and deep expertise in cutlery, T.C. has become a beloved figure in the knife community.