Exporting Manganese Ore and Alloys to the US — Steel Producers

Manganese is an irreplaceable element in modern steelmaking, acting as a desulfurizer, deoxidizer, and alloying agent that imparts strength and hardness to steel. For US steel producers, a reliable supply of high-grade manganese ore and ferromanganese alloys is critical to maintaining production quality and cost competitiveness. The United States imports virtually all of its manganese requirements, as domestic reserves are minimal and uneconomical to exploit [1]. This page provides a comprehensive guide for suppliers in Latin America and Africa looking to export manganese ore and alloys to US steel producers, covering product specifications, supplier dynamics, buyer requirements, certifications, pricing context, and how Coppermont facilitates these trade flows.

Product Specifications and Grades Relevant to US Buyers

Manganese ore traded internationally is typically classified by its manganese content, iron content, and impurity levels. The most common grades for metallurgical use contain between 30% and 55% manganese, with a manganese-to-iron ratio of at least 7:1 [2]. For US steel producers, the preferred ore grades are often those with 44–48% Mn, as these optimize downstream processing into ferromanganese and silicomanganese alloys. Lower-grade ores (30–40% Mn) are sometimes used but require blending or beneficiation.

Ferromanganese, the primary alloy produced from manganese ore, comes in two main types: high-carbon ferromanganese (HCFeMn) with 74–80% Mn and 6–8% carbon, and medium- or low-carbon ferromanganese with similar manganese content but reduced carbon levels. Silicomanganese, another key alloy, contains 65–68% Mn, 14–20% Si, and 1.5–2.5% C [3]. US steel producers specify these alloys according to ASTM A99/A99M or similar standards, which define acceptable ranges for manganese, silicon, carbon, phosphorus, sulfur, and other trace elements. Particle size distribution is also critical, with typical specifications requiring 10–100 mm lumps or specific mesh sizes for furnace charging.

LATAM and Africa Supplier Landscape for Manganese Ore and Alloys

Latin America and Africa together account for a significant share of global manganese production. In Latin America, Brazil is the dominant producer, with the Carajás Mineral Province in Pará state hosting large-scale operations by Vale and other miners. Brazil produced approximately 1.2 million metric tons of manganese ore in 2022, much of it destined for export [4]. Other Latin American producers include Mexico, where Autlán operates ferroalloy plants, and smaller operations in Peru and Chile. These suppliers benefit from proximity to US ports, reducing freight costs and transit times relative to more distant origins.

Africa is the world’s largest manganese-producing region, led by South Africa, which accounts for roughly 30% of global output. The Kalahari Manganese Field in the Northern Cape Province hosts several major mines, including those operated by South32, Assmang, and Jupiter Mines. South Africa produced over 16 million metric tons of manganese ore in 2022 [5]. Gabon is another significant African supplier, with the Moanda mine operated by Eramet-Comilog producing high-grade ore (44–52% Mn). Ghana, Côte d’Ivoire, and Zambia also contribute to regional supply. African suppliers offer competitive pricing and established logistics chains through ports such as Port Elizabeth, Durban, and Owendo.

US Buyer Types – Who Buys Manganese, How They Procure, What Specs Matter

The primary US buyers of manganese ore and alloys are integrated steel mills and mini-mills that produce carbon steel, stainless steel, and specialty alloys. Major players include Nucor, U.S. Steel, Cleveland-Cliffs, and Steel Dynamics, along with smaller specialty producers. These companies typically procure manganese through long-term contracts with established traders or directly from miners, often via tenders or annual supply agreements [6]. Procurement departments evaluate suppliers on product consistency, quality certifications, delivery reliability, and price competitiveness.

Specifications that matter most to US buyers include manganese content consistency (within ±1% of agreed grade), low phosphorus and sulfur levels (typically below 0.2% each), and appropriate sizing for furnace charging. For ferromanganese and silicomanganese, buyers also require detailed chemical analysis per heat or lot, along with certification of origin. Many US steel producers mandate compliance with ASTM standards and may require additional testing for trace elements like lead, zinc, or copper. Logistics flexibility—such as ability to deliver FOB or CIF to US Gulf Coast or East Coast ports—is also a deciding factor.

Certifications and Import Requirements for Manganese Ore and Alloys

Importing manganese ore and alloys into the United States requires compliance with several regulatory frameworks. The U.S. Customs and Border Protection (CBP) classifies manganese ore under HTS code 2602.00.0000 (manganese ores and concentrates) and ferromanganese under 7202.11.5000 or 7202.19.0000 depending on carbon content. Importers must ensure proper country-of-origin documentation, commercial invoices, packing lists, and bills of lading [7].

Environmental and safety certifications are increasingly important. Suppliers should demonstrate compliance with the Dodd-Frank Act’s conflict minerals provisions if sourcing from or near conflict-affected regions, though manganese is not currently listed as a conflict mineral. ISO 9001 quality management certification is widely expected by US buyers, and ISO 14001 environmental management certification provides additional credibility. For alloys, Material Safety Data Sheets (MSDS) must accompany shipments to comply with OSHA Hazard Communication Standards. Some US steel mills also require suppliers to undergo third-party audits of their operations, including environmental and labor practices.

Pricing and Lead Time Context

Manganese ore pricing is typically benchmarked against the CIF China price index published by CRU Group or Fastmarkets, with adjustments for grade, impurities, and freight differentials. In early 2025, high-grade manganese ore (44% Mn) was trading in the range of $4.50–$5.50 per dry metric ton unit (dmtu) CIF China [8]. For US buyers, delivered prices to Gulf Coast ports generally include a freight premium of $0.50–$1.00/dmtu over Chinese benchmarks, reflecting longer shipping distances from Africa and shorter distances from Latin America. Ferromanganese prices are quoted per metric ton of contained manganese, with HCFeMn typically ranging from $1,200–$1,600/mt FOB producer plant.

Lead times vary by origin. From Brazil, shipping to US Gulf ports takes approximately 10–14 days, while from South Africa or Gabon, transit times range from 20–30 days. Suppliers should factor in additional time for quality testing at origin, documentation, and potential port congestion. Most US buyers expect delivery within 45–60 days from order confirmation for spot purchases, while contract shipments may be scheduled monthly or quarterly.

How Coppermont Connects Suppliers to Buyers

Coppermont bridges the gap between Latin American and African manganese suppliers and US steel producers by providing end-to-end trade advisory and matchmaking services. Our team evaluates supplier capabilities, verifies product quality and certifications, and connects them with vetted US buyers seeking reliable manganese ore and alloy sources. We assist with contract negotiation, logistics coordination, and compliance with US import regulations, ensuring smooth transactions from mine to mill.

For suppliers, Coppermont offers market intelligence on US buyer requirements, pricing benchmarks, and competitive positioning. For US steel producers, we provide access to a curated network of suppliers who meet rigorous quality and sustainability standards. Whether you are a miner in Brazil’s Carajás region, a ferroalloy producer in South Africa, or a procurement manager at a US steel mill, Coppermont facilitates the connections that power America’s steel industry.

Ready to start? Contact our team to explore sourcing or supply opportunities in the US manganese market.