Exporting Silver Bullion and Granules to the US — US Industrial and Investment Buyers

Silver is a critical industrial metal and a trusted store of value. For US buyers—ranging from electronics manufacturers and solar panel producers to bullion dealers and investment funds—reliable access to high-purity silver bullion and granules is essential. Latin America, home to the world's largest silver reserves, offers a strategic supply advantage. This page provides a comprehensive guide for US industrial and investment buyers seeking to import silver bullion and granules from Latin American suppliers, covering product specifications, supplier landscape, procurement practices, certifications, pricing context, and how Coppermont facilitates these transactions.

Silver plays a dual role in the US economy: as an industrial input and as an investment asset. In 2023, the US imported over 4,500 metric tons of silver, valued at approximately $3.5 billion, with Mexico and Peru supplying the majority [1]. Industrial demand accounts for more than 50% of US silver consumption, driven by applications in electronics, photovoltaics, brazing alloys, and medical devices [2]. Investment demand, including bullion bars and coins, adds another significant layer, with US investors purchasing an estimated 100 million ounces of silver in 2023 [3]. This robust demand underscores the need for consistent, high-quality supply from trusted sources.

Product Specifications and Grades Relevant to US Buyers

Silver bullion and granules are traded based on purity, form, and adherence to international standards. For US buyers, the most common specifications are:

• Silver Bullion Bars: Typically produced in weights of 1 kg, 100 oz, and 1,000 oz, with a minimum purity of 99.9% (999 fine) or 99.99% (9999 fine). Bars must be stamped with the refiner's mark, weight, purity, and serial number. The London Bullion Market Association (LBMA) Good Delivery standard is the global benchmark for large bars (1,000 oz), requiring a minimum purity of 99.9% [4].
• Silver Granules: Small, free-flowing particles of pure silver, typically 99.9% to 99.99% purity, used in industrial applications such as electronics, catalysts, and alloying. Granules are often preferred by manufacturers for precise melting and casting processes. They are usually packaged in 1 kg or 25 kg bags, with certification of analysis provided.
• Purity Grades: The most common grades are 999 (99.9%) and 9999 (99.99%). For investment-grade bullion, 9999 is preferred, while industrial buyers may accept 999 depending on their application. The ASTM B413-17 standard specifies requirements for refined silver in bar or granule form, covering chemical composition and sampling methods [5].
• Dimensions and Marking: Bullion bars must meet specific dimensions (e.g., 1,000 oz bars: approximately 12" x 4" x 2") and be clearly marked with the refiner's name, weight, purity, and serial number. Granules have no standard size but are typically 1–5 mm in diameter.
• Packaging: Bullion bars are often individually sealed in plastic and packed in wooden crates for secure transport. Granules are packed in sealed drums or bags, with moisture-proof liners to prevent oxidation.

Latin America and Africa Supplier Landscape

Latin America dominates global silver production, with Mexico, Peru, and Chile leading. In 2023, Mexico produced 5,400 metric tons of silver, Peru 3,100 metric tons, and Chile 1,600 metric tons [6]. These countries have well-established mining and refining industries, making them primary sources for US buyers.

• Mexico: The world's largest silver producer, with major mines such as Fresnillo (the world's largest silver mine), Peñasquito, and Saucito. Mexican refiners include Industrias Peñoles, which produces LBMA Good Delivery bars, and Met-Mex Peñoles, a major refiner of silver bullion and granules. Mexican suppliers benefit from proximity to the US, reducing shipping times and costs.
• Peru: The second-largest producer, with mines like Antamina, Cerro Verde, and Uchucchacua. Peruvian refiners such as Compañía de Minas Buenaventura and Refinería de Cajamarquilla produce high-purity silver. Peruvian silver is often exported as refined bullion or granules to US buyers.
• Chile: A significant producer, with silver as a byproduct of copper mining. Chilean refineries, including those operated by Codelco and Antofagasta Minerals, produce silver bullion and granules meeting international standards.
• Africa: While smaller in volume, African suppliers like South Africa and Morocco offer additional sources. South Africa produces silver primarily as a byproduct of platinum and gold mining, with refiners such as Rand Refinery. Morocco has growing silver production from mines like Imiter. However, logistics and regulatory challenges can make African sourcing less competitive for US buyers compared to Latin America.

US Buyer Types: Who Buys Silver and How They Procure

US buyers of silver bullion and granules fall into two main categories: industrial and investment.

• Industrial Buyers: These include electronics manufacturers (e.g., for circuit boards, connectors, and switches), solar panel producers (silver paste is a key component in photovoltaic cells), brazing alloy manufacturers, medical device companies (silver's antimicrobial properties are used in wound dressings and catheters), and chemical catalyst producers. Industrial buyers typically procure silver granules or small bars on long-term contracts, with specifications for purity (often 99.99%), particle size, and packaging. They require certification of analysis (COA) and may conduct audits of refineries to ensure quality. Procurement is often managed through direct contracts with refiners or via metal trading desks at banks like JPMorgan or HSBC.
• Investment Buyers: This group includes bullion dealers, coin mints, exchange-traded fund (ETF) providers, and individual investors. They purchase bullion bars (1 oz, 10 oz, 100 oz, 1 kg, and 1,000 oz) and granules for storage or fabrication into coins. Investment buyers prioritize purity (99.99%), LBMA accreditation, and ease of storage. They often source through wholesale bullion dealers or directly from refiners, with transactions settled in USD. The US Mint is a major buyer of silver for producing American Eagle coins, requiring LBMA Good Delivery bars [7].
• Procurement Process: Both buyer types typically use competitive tenders or negotiate long-term supply agreements. Payment terms are often cash against documents (CAD) or letters of credit (LC). Buyers require documentation including origin certificates, COA, and shipping documents. For investment-grade bullion, assay reports from accredited refiners are mandatory.

Certifications and Import Requirements

Importing silver into the US requires compliance with several regulations and certifications:

• LBMA Good Delivery: The gold standard for silver bullion. Refiners must be listed on the LBMA Good Delivery list, which requires adherence to strict purity, marking, and sourcing standards. US investment buyers typically require LBMA accreditation for large bars [4].
• ASTM B413-17: This standard covers refined silver in bar, granule, or other forms, specifying chemical composition (silver content ≥ 99.9%) and sampling methods. Compliance is often requested by industrial buyers [5].
• US Customs and Border Protection (CBP): Silver imports are subject to duties. As of 2024, unrefined silver (HS code 7106.91) has a duty rate of 3.7% ad valorem, while refined silver (HS code 7106.92) is duty-free. Importers must file an entry summary (CBP Form 7501) and provide a commercial invoice, packing list, and bill of lading. Origin certificates (e.g., from the exporting country's chamber of commerce) may be required to claim preferential duty rates under free trade agreements like USMCA (for Mexican silver) or the US-Peru Trade Promotion Agreement [8].
• Anti-Money Laundering (AML) and Conflict Minerals: US buyers must ensure suppliers comply with AML regulations and do not source from conflict-affected regions. The Dodd-Frank Act requires due diligence on conflict minerals, though silver is not directly covered, buyers often require suppliers to certify responsible sourcing.
• Environmental and Health Certifications: Industrial buyers may require ISO 14001 (environmental management) and OHSAS 18001 (occupational health and safety) certifications from refiners. Some buyers also require REACH compliance for granules used in chemical applications.

Pricing and Lead Time Context

Silver pricing is primarily determined by the London Silver Fixing and COMEX futures, with premiums added for form, purity, and delivery. As of early 2025, spot silver is trading around $24–$26 per troy ounce, with premiums for bullion bars ranging from $0.10–$0.50 per ounce over spot for large bars, and $0.50–$1.00 for smaller bars and granules. Premiums are influenced by supply-demand dynamics, refinery capacity, and logistics costs.

• Lead Times: For Latin American suppliers, lead times are typically 2–4 weeks from order confirmation to delivery at a US port (e.g., Laredo, TX, for Mexican silver; Los Angeles or Houston for Peruvian/Chilean silver). African suppliers may require 6–10 weeks due to longer shipping routes and customs clearance. Industrial buyers ordering granules often require just-in-time delivery, with lead times of 1–2 weeks for Mexican suppliers.
• Volume Discounts: Large-volume buyers (e.g., 10,000 oz or more) can negotiate lower premiums, especially for 1,000 oz bars. Investment buyers purchasing smaller quantities may pay higher premiums but benefit from liquidity.
• Payment Terms: Common terms include cash in advance (CIA) for new relationships, or letters of credit (LC) for established buyers. Net 30–60 day terms are possible for creditworthy buyers with long-term contracts.

How Coppermont Connects Suppliers to Buyers

Coppermont bridges the gap between Latin American silver producers and US industrial and investment buyers. Our platform provides:

• Vetted Suppliers: We screen refiners and miners for LBMA accreditation, ASTM compliance, and financial stability. Our network includes top producers from Mexico, Peru, and Chile.
• Trade Advisory: Our experts guide buyers through import regulations, certifications, and logistics, ensuring smooth transactions. We assist with documentation, customs clearance, and dispute resolution.
• Logistics and Financing: We connect buyers with trusted logistics partners for secure transport and offer financing options to optimize cash flow.
• Market Intelligence: Access real-time pricing, supply trends, and demand forecasts to make informed procurement decisions.

For Suppliers: List your silver bullion and granules on Coppermont to reach pre-qualified US buyers. We help you navigate export requirements and build long-term relationships.

For Buyers: Source high-purity silver from Latin America with confidence. Contact Coppermont to discuss your volume, specifications, and delivery needs. Let us help you secure a reliable supply chain for your industrial or investment portfolio.

In an era of increasing demand and supply chain complexity, Latin America remains the most strategic source for US silver buyers. With the right partner, you can access top-quality silver bullion and granules, ensuring your operations or investments are backed by the world's finest silver.