Market and Products

Always meeting with the market demand

Eramet Marietta supplies the world’s steel producers with a complete range of high-quality manganese alloys. In our processing plant, raw manganese is refined and processed into ferromanganese and silicomanganese. These additive ingredients contribute between 1 and 10 per cent of the composition of steel, graded by quality.

Eramet Marietta can transform all the manganese from ore using a ferromanganese and silicomanganese process. Annual production is around 110 000t of alloys, including:

• Silicomanganese,
• Ferromanganese (High Carbon, Medium Carbon, Low Carbon),
• Manganese by-products (such as manganese tetraoxide and slag).

The solid pieces are crushed into various sizes according to the customer’s requirements.

Located in the Mid-Ohio valley, Eramet Marietta delivers commercial product to its North American clients in less than a day.

Manganese – invisible to the naked eye, but indispensable

Manganese is a metallurgical element denoted by the chemical symbol Mn. Practically all manganese that is processed is used in steel production. Smaller amounts are used in cast iron and in aluminium, magnesium and copper alloys, and in special appliances.

• Ferromanganese (from ferro, meaning iron): alloys which, in addition to iron, contain up to about 80 per cent manganese and carbon in amounts ranging from about 7 per cent down to 0.5 per cent.
• Silicomanganese consists mainly of manganese (up to 70 per cent), silicon (up to 30 per cent), small amounts of carbon, and the remainder iron.

Manganese alloys uses

No matter where your daily life takes you, you will encounter products that contain manganese alloys from Eramet Marietta. The processing plant in Marietta have unique metallurgical expertise that is exported through our products to countries all around the world.

Nearly 90 per cent of the world’s total manganese alloy production goes into the production of stainless steel, steel for the construction, energy and transport sectors, and the tool industry, and special steel produced for the aeronautics and aerospace industries. The construction market alone accounts for more than half the steel used worldwide.

The potential for growth in this sector will remain strong in the years ahead. This growth is primarily due to urbanization and industrialization in the growth markets of China and India.

The automobile industry and production of stainless steel are the major market segments for Eramet Marietta’s refined products.