Eramet Marietta

  • Eramet Marietta, Inc. is a metallurgical manufacturing facility located in Marietta, Ohio.  A subsidiary of Eramet Group, a metals and mining company based in Paris, France, Eramet Marietta, Inc. has roots in the Mid-Ohio Valley dating back to the early 1950’s.
  • Located on a site that was originally built as part of a vast industrial facility owned by Union Carbide, Eramet Marietta is only one of a very few manganese manufacturers currently operating in the United States.  The company prides itself on producing high quality products, advancing operational and environmental technologies and always working safely first.

170 employees

(10 subcontractors)

110 000t
of Manganese Alloys (2021)

Customers of
the North America
Steel industry

Comprehensive Customer Services

An ideal location in the heart of Ohio, close to our customer with local inventory ready to be shipped anytime.

High quality

Eramet Marietta has 70 years of experience in manufacturing manganese alloys. This knowledge base, developed over generations, is Eramet Marietta’s most important resource and asset. This expertise has also made the company a leader in smelting and refining manganese alloys.

State of the art

The development group focuses on improving process stability in areas such as raw materials handling, metallurgical process development, environmental protection and safety. All these activities promote improved utilization of raw materials and energy, which in turn has had a positive environmental impact.

Environmentally committed

The environmental projects aim to reduce emissions to the internal and external environment, and to utilize the byproducts from the production processes. All these activities are conducted transparently and in cooperation with the authorities and other industries affected by the same issues.​

About Eramet

Eramet transforms the Earth’s mineral resources to provide sustainable and responsible solutions to the growth of the industry and to the challenges of the energy transition.

Its employees are committed to this through their civic and contributory approach in all the countries where the mining and metallurgical group is present.

Manganese, nickel, mineral sands, lithium, and cobalt: Eramet recovers and develops metals that are essential to the construction of a more sustainable world.

As a privileged partner of its industrial clients, the Group contributes to making robust and resistant infrastructures and constructions, more efficient means of mobility, safer health tools and more efficient telecommunications devices.

Fully committed to the era of metals, Eramet’s ambition is to become a reference for the responsible transformation of the Earth’s mineral resources for living well together.


€3.8 billion
in adjusted revenue in 2023

countries of operation