[Supply Disruptions Persist, Imported TCs Continued to Decline]: Weekly data showed that the average weekly TC of SMM Zn50 domestic ore was unchanged at 1,550 yuan/mt in metal content, and the SMM imported zinc concentrate index fell $4.13/dmt MoM to $11.25/dmt...

According to SMM research, as of the 12th of March, total iron ore inventories across the 10 major ports surveyed stood at 118.99 million tonnes, an increase of 1.08 million tonnes compared to the previous week. Within this total, inventories of coarse fines and lump ore saw a marginal decrease, while stocks of concentrate and pellets continued to accumulate.

An employee was killed in an accident at Rio Tinto's Kennecott copper mine in Utah, USA, on Thursday. Operations at the mine have been suspended following the incident, and CEO Simon Trott said he would travel to the site. The Kennecott mine produced 125,000 metric tons of copper concentrate in 2025.

ArcelorMittal Kryvyi Rih has confirmed its plan to operate two blast furnaces throughout 2026, despite significant electricity availability challenges in early 2025 that caused temporary shutdowns. The company’s mining department is currently operating at 75% of its full capacity, producing approximately 7.5 million tonnes of concentrate per year. CEO Mauro Longobardo noted that while port attacks have delayed some coking coal deliveries from Australia and the USA, the current production volume is sufficient for both internal needs and exports to European subsidiaries.

[China Iron Ore Brief: Iron Ore Concentrates Prices in West Liaoning May Have Room to Move Higher] Trading sentiment in the domestic ore market in west Liaoning was relatively cautious, with the ex-factory prices of 66-grade iron ore concentrates, wet basis and excluding tax, at 715-720 yuan/mt. Affected by safety and environmental protection inspections, local iron ore concentrates saw capacity utilization rates remain at relatively low levels, with overall resources tight, boosting sentiment among producers holding cargoes, while overall wait-and-see sentiment was relatively strong. Demand side, local steel mills mostly maintained normal production as planned

[SMM Chromium Weekly Review: Costs and Demand Jointly Drove the Market, with Strongly Bullish Sentiment] March 13, 2026: Quotations remained unchanged for the time being, and the chromium market operated steadily...

After returning from the Chinese New Year holiday, Q4 reports from listed miners outside China have been released one after another recently. 2025 was a period of concentrated release of new capacity at mines outside China. What was the specific situation? What are the expectations for 2026? Let us analyze it by enterprise.

This week (March 6–12), the operating rate of SMM copper wire and cable enterprises was 66.59, up 5.69 points MoM and down 10.62 points YoY. The operating rate steadily rebounded this week, mainly due to a slight correction in copper prices that drove order release, coupled with support from concentrated power grid deliveries, though the current pace of order recovery remained weaker than in the same period last year. By sector, orders from the power segment continued to support enterprise production schedules, orders from the new energy segment also improved, while construction project orders remained weak, dragging on overall operating rates. Inventory side, the correction in copper prices drove enterprises to restock for rigid demand, but as enterprises maintained production schedules, days of raw material inventories fell 0.31 days MoM this week; for finished product inventories, the correction in copper prices boosted downstream consumption, but high copper prices still restrained end-user purchase willingness, so days of finished product inventories fell 0.41 days MoM. Looking ahead to next week, current orders on hand from the power and new energy sectors will continue to provide the main support for production scheduling. SMM expects the operating rate of copper wire and cable next week (March 13–19) to increase 3.45 points MoM to 70.04, down 4.49 points YoY.

In the fields of precious and rare metals, compared with well-known categories such as gold, silver, and platinum-group metals, osmium has always remained a niche yet highly distinctive presence. With its unmatched physicochemical properties, it has become an indispensable key material in high-end industry and scientific research. Even though it receives limited market attention, it still possesses irreplaceable value. This article will provide a comprehensive breakdown of osmium metal, covering its basic properties, resource supply, application scenarios, and market characteristics, to offer a full understanding of this “king of density.” I. First Encounter with Osmium: A Hardcore Outlier Among the Platinum-Group Metals Osmium, with the chemical symbol Os and atomic number 76, belongs to the platinum-group metals. It is a Group VIII transition metal on the periodic table and also one of the rarest metals found in nature. As one of the six major members of the platinum-group metal family, osmium has no independent ore deposits and is commonly associated with platinum, iridium, ruthenium, rhodium, and palladium. It can only be recovered through purification during platinum ore smelting and cannot be extracted through standalone large-scale mining. This inherent characteristic directly defines its scarcity. Osmium’s physicochemical properties are truly unique in the world of metals, with highly recognizable core characteristics: first, it has the highest density in the world. Under standard conditions at 20°C, its density reaches 22.59 g/cm³, far exceeding that of gold (19.32 g/cm³) and platinum (21.45 g/cm³). It is currently the densest naturally occurring metal known, and at the same volume, it weighs far more than various conventional precious metals. Second, it demonstrates excellent high-temperature resistance, with a melting point of 3,033°C and a boiling point exceeding 5,000°C. It remains highly stable in high-temperature environments and can adapt to various industrial and scientific applications under extreme heat. Third, it has outstanding hardness and strong corrosion resistance. With a Mohs hardness of 7, it is hard, durable, and wear-resistant, and is difficult to corrode under conventional acidic or alkaline conditions. However, its drawbacks are also quite evident: it is highly brittle and has extremely poor plasticity, making it impossible to process through conventional mechanical methods, so it is mostly used in powder or alloy form. A key safety precaution must be emphasized here: when osmium metal is heated in air to above 100°C, it slowly oxidizes to form osmium tetroxide (OsO₄). This substance is highly irritating, highly volatile, and somewhat toxic. Therefore, the entire process involving osmium, including production smelting, storage and transportation, and deep processing, must be carried out under the protection of inert gas and in strict compliance with operational standards. These exceptionally high compliance and control requirements further raise the barriers to osmium’s production and application. II. Extreme Scarcity: Osmium’s Resource Endowment and Supply Landscape Osmium is far rarer than commonly recognized precious metals such as gold and platinum, and it can be regarded as a “niche treasure” in the precious metals sector. Relevant data show that the average abundance of osmium in the Earth’s crust is only about 0.001 ppm, making it one of the least abundant stable elements in the crust. Globally, identified recoverable reserves are extremely limited, and resource distribution is highly concentrated, without the formation of widely distributed ore deposits. Supply side further highlights the scarcity of osmium. As there are no standalone mines, global osmium production is entirely dependent on platinum mining and smelting, with capacity remaining at an extremely low level for many years. Global annual production is about 1 mt (data from the International Platinum Group Metals Association), while China’s annual production is less than 100 kg, with supply far below that of other platinum group metals. From the global supply landscape, traditional major platinum group metal-producing countries such as South Africa and Russia control the vast majority of the world’s osmium resources and smelting capacity. Industry supply is therefore highly monopolized, with extremely low supply elasticity. Minor changes in mine development progress, geopolitical conditions, environmental protection-related control policies, and platinum group metal smelting capacity all directly affect global osmium supply. This dual attribute of “inherent resource scarcity + constrained supply” has kept the osmium market in a long-term tight supply-demand balance and given it strong price resilience and fluctuation elasticity, securing it a unique position in the rare metals market. III. Exclusive to Cutting-Edge Applications: Core Application Scenarios for Osmium Although osmium has limited production and a relatively narrow application scope, its exceptional physical and chemical properties have enabled it to establish a precise foothold in high-end niche fields, making it an irreplaceable core material in many cutting-edge applications. Downstream demand is concentrated and highly rigid, with no low-cost substitutes currently available. Its core applications are mainly concentrated in four major areas: 1 Special Hard Alloys: Core Raw Materials for High-End Wear-Resistant Components Osmium-based alloys produced by melting osmium with metals such as iridium and platinum combine ultra-high hardness, wear resistance, and corrosion resistance, making them key materials for high-end precision instruments. These alloys are widely used in high-precision bearings for high-end watches and precision instruments, nibs for premium fountain pens, styluses for professional record players, and medical precision scalpels and wear-resistant components for high-end machinery. They can significantly extend service life and durability, making them suitable for long-term, high-load, high-wear operating environments, and they are core wear-resistant materials in high-end manufacturing. 2 Industrial Catalysis: Highly Efficient Specialized Additives for Fine Chemicals Osmium and its compounds have excellent catalytic activity and serve as specialized catalysts in certain fine chemical and organic synthesis reactions. In particular, in special chemical processes such as hydrogenation and oxidation reactions, they offer high catalytic efficiency and strong reaction selectivity, effectively optimizing process flows and improving product purity and yield. Although the unit consumption of osmium catalysts is extremely low, they are a rigid process necessity and are difficult to replace with other common metal catalysts, resulting in relatively stable downstream demand. 3 Scientific Research and Detection: Essential Specialized Consumables for Laboratories Although osmium tetroxide is toxic, it has irreplaceable value in scientific research. It is a high-quality staining agent for biological samples and microscopic material sections under electron microscopes, substantially improving sample clarity and contrast, and is an indispensable laboratory reagent in frontier research fields such as materials science and life sciences. Meanwhile, high-purity osmium powder was also widely used in high-end scientific research experiments and the R&D of specialized new materials, serving as a niche but essential consumable for major research institutes and high-end laboratories. 4. High-End Specialized Fields: Core Components for Military and Aerospace Applications Leveraging its core advantages of high density, high-temperature resistance, and high stability, osmium was also applied in specialized high-temperature components for aerospace and military applications, precision guidance components, as well as niche scenarios such as high-end electrical contacts and wear-resistant coatings. These applications were all concentrated in cutting-edge, high-precision sectors. Although the volume of each individual application was small, the product value-added was extremely high. Moreover, with the technological iteration and development of high-end manufacturing and the military and aerospace industries, related demand had the potential for steady growth. IV. Summary of the Core Characteristics of the Osmium Metal Market Overall, as a rare category among platinum group metals, osmium had highly distinctive core characteristics: extreme scarcity on the resource side, highly monopolized supply with insufficient elasticity; application-side concentration in high-precision, cutting-edge fields, with rigid and irreplaceable demand; and unique physicochemical properties, combining both advantages and application barriers. Unlike the market-driven fluctuation logic of conventional bulk commodities, the osmium market was significantly affected by factors such as supply-side changes, downstream demand from high-end industries, and compliance costs. The overall market size was small, and trading frequency was relatively low, placing it in the category of niche rare precious metals. Its core value always revolved around the two key points of “scarcity” and “irreplaceability,” making it an indispensable key metal material in high-end industrial and scientific research fields.

[China Iron Ore Brief: Iron Ore Concentrates Prices in Tangshan Had Some Room to Move Higher] Iron ore concentrates prices in Tangshan were relatively stable this week, with the ex-factory prices of 66-grade dry-basis, tax-included iron ore concentrates at 970-980 yuan/mt. As the important meeting was about to close, the impact of environmental protection and safety inspections gradually weakened, and some mines and beneficiation plants showed stronger willingness to produce, though overall iron ore concentrates resources remained relatively tight. According to SMM tracking, after the meeting ended, some mines and beneficiation plants that had suspended production earlier