According to market sources, Chilean miner Antofagasta has recently proposed to several major Chinese copper smelters that mid-year copper concentrate contracts be priced using spot-market TC/RC indexes rather than the traditional fixed benchmark TC/RC structure. Since the 1980s, annual benchmark treatment and refining charges (TC/RCs) have been established through negotiations between leading miners and smelters, serving as a reference point for copper concentrate contracts worldwide. However, the benchmark system is facing growing pressure as global copper concentrate supply tightens, smelting capacity continues to expand, and spot TC/RCs fall to unprecedented lows. As of June 12, 2026, the SMM Imported Copper Concentrate Index had declined to a record low of -US$119.84/mt. If more miners move toward index-linked pricing mechanisms, the long-standing benchmark TC/RC pricing system could face a fundamental shift.

South America remains the cornerstone of global copper supply, with Chile and Peru collectively accounting for more than one-third of global mined copper production. As electrification, grid modernisation, renewable energy deployment and AI-driven infrastructure investment continue to reinforce long-term copper demand growth, policy developments across the region are becoming increasingly important determinants of future supply availability.

As the United States continues to strengthen critical minerals security, domestic manufacturing, and copper supply chain resilience, limited smelting capacity is increasingly emerging as a key challenge. The country currently operates only a handful of primary copper smelters, while low treatment and refining charges (TC/RCs) and rising environmental compliance costs continue to pressure profitability. Alongside efforts to expand domestic mining and manufacturing capacity, maintaining existing smelting operations and securing refined copper supply will remain critical to the long-term success of U.S. copper supply chain strategy. Continued pressure on the smelting sector could limit the country's ability to reduce reliance on imported refined copper in the near term.

On May 28, JX Advanced Metals, Mitsubishi Materials (MMC), Mitsui Kinzoku, and Marubeni signed a final agreement to integrate MMC’s copper concentrate procurement and sales of cathode copper, sulfuric acid, and other by-products into Pan Pacific Copper (PPC), while establishing a wholly-owned subsidiary, "PPC Material." The integration will be executed via a company split: PPC first absorbs the target business, then transfers it to the newly established PPC Material on the same day. Originally planned for end-March, the process was delayed by about two months due to detailed discussions. Post-integration, PPC’s ownership stands at: JX 32.50%, MMC 32.00%, Mitsui Kinzoku 21.90%, and Marubeni 13.60%. PPC becomes an equity-method affiliate of all four companies, with PPC Material as its wholly-owned subsidiary. Currently, PPC subcontracts smelting/refining to JX Metal Smelting and Hibi Smelting; after the deal, MMC will also become a subcontractor. Japan’s copper concentrate procurement windows will shrink from three to two, held by Sumitomo Metal Mining and PPC Material. The move aims to counter intensifying overseas competition and sharply deteriorated TC/RC through centralized procurement and cost efficiency. The transaction is planned for October 1, 2026, pending regulatory approvals.

[SMM Analysis] Can Indonesia import sulfuric acid as a substitute after the sulfur restriction?

[SMM Analysis]: Copper-related Policy Shifts Across the Americas: Copper is no longer merely an industrial metal — it is rapidly emerging as a strategic resource. From mining policy reforms in Chile and Peru, to the U.S. Section 232 investigation and the strengthening of North American critical minerals strategies, copper policies across the Americas in 2025–2026 are set to exert profound influence over global copper supply-demand balances, smelting dynamics, and copper price volatility.

At the hosted by SMM, Ouyang Yichang, SMM secondary copper industry research analyst, shared insights on the topic of "Analysis of Japan's Secondary Copper Market." He noted that, according to SMM, Japan's copper scrap market is gradually transitioning toward a fiercely competitive "seller ecosystem." Trade models that rely solely on spot cargo procurement are increasingly exposed to the risk of supply disruptions. To secure long-term resource supply, ex-China purchasing enterprises need to move beyond the traditional spot trading mindset and establish structural partnerships through deep-binding approaches such as signing long-term contracts and equity cooperation, in order to adapt to the persistently tight market landscape. Global Positioning of Japan's Copper Scrap Market Global Positioning of Japan's Copper Scrap Market Key Drivers Behind Japan's Leading Position in Asia 1 Precision Sorting: Exceptional classification accuracy ensures high-quality scrap output. 2 Well-Established Infrastructure: A mature "urban mine" system and advanced logistics provide a highly reliable supply foundation. 3 Strategic Geographical Advantage: Proximity to China (accelerating capital turnover), while serving as a key trans-Pacific logistics hub connecting the Americas and Asia. 4 Favorable Trade and Tax Policies: Zero export tariffs and transparent regulations ensure seamless global operations. 5 Commercial Reliability: High standards of packaging and business ethics minimize quality claims. Japan's Average Unit Price of Copper Scrap Significantly Leads the Top Five Global Exporters In 2025, Japan and Thailand each accounted for approximately 7% of global copper scrap exports. However, Japan commanded the highest average export price among major peers ($8,112/mt), thanks to a substantial quality premium. This price spread revealed fundamental differences in product mix. Thailand primarily served as a processing hub, with limited high-grade copper scrap output domestically. In contrast, Japan was organically driven by its mature "urban mine" ecosystem, consistently producing high-purity, high-grade materials. Flow of Japan's Copper Scrap Flow of Japan's Copper Scrap Rising Trade Volume and Shrinking Net Exports: A Shift Toward Domestic Retention Smelters Drove Copper Scrap Consumption Growth While Downstream Processing Enterprises Saw Declining Usage According to SMM, compared with 2021, processing enterprises' copper scrap usage declined by 8% in 2025. Processing enterprises: Weak downstream demand (automotive, construction) and fierce global competition for high-quality copper scrap severely squeezed domestic processing enterprises, resulting in a sustained 8% decline in their absolute usage. Smelters: Tightened environmental protection and export policies implemented since 2023 restricted the outflow of copper scrap, significantly accelerating this structural "reflux" toward smelters. Combined with the plunge in TC/RC, Japanese smelters were forced to rely on these raw materials to maintain production. Consequently, the share of copper scrap consumed by the smelting segment has maintained an overall upward trend in recent years. Japan's overall scrap supply is contracting; despite robust growth in domestic consumption, the structural decline in net exports is the primary driver. Since the 2021 peak, Japan's total apparent supply of copper scrap has been on an overall downward trend. This indicates structural tightening in domestic scrap generation and social recovery rates, with increasingly scarce available resources. Despite the overall supply contraction, domestic apparent consumption demonstrated strong resilience, as Japanese smelters actively secured local raw materials to maintain production amid plunging TC. This robust local demand is significantly squeezing exports. Net exports have consequently declined structurally to low levels. Japan is shifting from a "resource overflow" model to an "internal absorption" model, which will severely exacerbate raw material shortages for Southeast Asian and Chinese buyers. Bare bright copper payable indicator stays high: supply tightness and China's tax-driven demand outweigh the impact of recent copper price rebound Since early 2026, market copper prices have risen steadily overall; in March, copper prices experienced a periodic pullback, and copper scrap sellers held prices firm with strong willingness to defend price floors, directly driving the bare bright copper payable indicator passively higher. Entering April, futures copper prices rebounded and stabilized at highs, but the copper scrap payment ratio deviated from conventional pricing logic and did not pull back accordingly, remaining firmly in the 98.5%-99.0% range. The core supporting logic lies in: continued tightening of domestic tax regulation, with China's downstream processing enterprises increasingly relying on imported copper scrap to obtain compliant input tax deductions, forming rigid procurement demand; coupled with tight spot copper scrap supply, the dual support of supply and demand underpins the copper scrap payment ratio to stay high. Japan's Scrap Policies Japan's Scrap Policies Regulatory Shift: Building an "Invisible Wall" Although Japan has not explicitly imposed export bans, it strengthens its domestic closed-loop system through a strategic policy combination. For global buyers, this signals a structural shift in the Japanese market going forward: intensified competition, soaring procurement costs, and increasing difficulty in accessing high-quality scrap. Regulatory maturity and standardized transparency are the primary drivers of the "Japan premium." Policy Lag vs. Market Reality: Although the EU Waste Shipment Regulation and potential US export restrictions have not yet been formally enacted, the market has already priced in expectations of future supply contraction, compelling downstream buyers to proactively pivot toward trade hubs with higher compliance and transparency. "Reliability Premium" Logic Emerges: As a pioneer in industry compliance and market transparency, Japan can effectively hedge against risks prevalent in other regions, such as insufficient information transparency and origin rerouting, providing the market with an important safe-haven and pricing anchor function. Outlook and Forecast Strategic Outlook and Forecast Driven by aggressive development targets at both enterprise and national levels, scrap consumption by domestic smelters in Japan is set to experience significant structural growth. According to SMM, the climb in scrap consumption by Japanese smelters is not a short-term cyclical response triggered by declining mine TCs, but rather a fundamental structural transformation underpinned by strong capital strength and long-term commitment. As 2030 ESG-related targets continue to materialize, the trend of retaining domestic scrap for internal use in Japan will deepen further, structurally tightening global circulating scrap supply over the long term and continuously compressing the available sourcing volume for ex-China buyers. Response Logic for the "New Normal" in Japan's Copper Scrap Market Volume and Flow Direction: Steady Decline Net exports of copper scrap will not plunge to zero abruptly, but rather exhibit a sustained structural decline trend. As domestically subsidized capacity comes fully online, exports of high-grade secondary copper such as bare bright copper and No.1 copper will enter a steady contraction trajectory. Pricing Logic: The traditional medium and long-term linkage of "rising copper prices, declining scrap payment ratios" has been structurally reshaped. Under the dual effects of persistently tight copper concentrates supply and China's rigid tax-driven procurement demand providing a floor, the payment ratio for Japan's high-quality copper scrap is expected to establish a long-term upward baseline. Strategic Pivot: Constrained by the upper limit of domestic secondary copper output and tight labor supply, Japanese recycling industry alliances will accelerate their expansion into markets outside China. Japanese enterprises will invest in overseas joint venture projects to solidify downstream processing capacity deployment while maintaining Japanese-led control over raw material supply chains. According to SMM analysis, the current Japanese copper scrap market is gradually transitioning toward a fiercely competitive "seller ecosystem." Trade models that rely solely on spot purchases are increasingly exposed to the risk of supply disruptions. To secure long-term resource supply, ex-China purchasing enterprises need to move beyond the traditional spot trading mindset and establish structural partnerships through deep-binding approaches such as signing long-term contracts and equity cooperation, thereby adapting to the persistently tight market landscape.

Shanghai Metals Market (SMM) is thrilled to announce that our 2026 SMM Global Lead-Acid Battery Supply Chain Industry Conference is scheduled to take place in Ho Chi Minh City, Vietnam, during November 12-13, 2026！

Since the beginning of this year, the spot treatment charge market for copper concentrates has shown an unprecedented and severe downward trend. The SMM Copper Concentrate Spot Index has fallen from -45 USD/dmt at the start of the year to near -70 USD/dmt, with the speed and magnitude of the decline being historically rare. A negative treatment charge means that when smelters purchase copper concentrates, they not only fail to receive traditional processing income from miners but instead must pay the sellers. Based on the current TC of -70 USD/dmt, the actual cost smelters pay sellers in the copper smelting process is equivalent to a TC of 70 USD, or further converted to a TC+RC of approximately 112 USD. This extreme price signal has quickly drawn high market attention to smelter profitability and even sparked concerns about the sustainability of domestic copper smelting production. Despite treatment charges falling to historic lows, copper cathode production by Chinese smelters remains at high levels, currently around 1.2 million tons per month. This phenomenon of "producing more while losing more" appears, on the surface, to contradict market logic, but actually reflects smelters' passive choices and structural supporting factors in the current complex environment. Historically, extreme treatment charge scenarios are not unprecedented. In past industry downturns, smelters often relied on one or several factors—exchange rate fluctuations, rising sulfuric acid prices, or treatment charges themselves—to barely maintain cash flow balance. In the current cycle, the sharp rise in sulfuric acid prices has become a key variable supporting smelter survival. Currently, the ex-factory prices of smelter acid sold by domestic copper smelters generally range from 800 to 1,600 yuan per ton. The latest SMM Copper Smelting Acid Index stands at 1,235.5 yuan/ton. As a crucial byproduct of copper smelting, sulfuric acid price fluctuations significantly impact smelters' comprehensive earnings. Typically, smelters produce approximately one ton of sulfuric acid for every dry metric ton of copper concentrate processed. Based on the current sulfuric acid price of 1,235.5 yuan/ton, after deducting value-added tax (at a 13% rate) and converting to US dollars (using an exchange rate of 6.9), each ton of sulfuric acid can contribute about 158 USD in revenue for the smelter, equivalent to an additional 158 USD per dry metric ton of copper concentrate. If further converted to the TC+RC metric, this amounts to about 99 USD. Thus, the rise in sulfuric acid prices has significantly offset the loss pressure from negative copper concentrate treatment charges, with some more efficient smelters even achieving marginal profitability. It is precisely this "stabilizer" role of sulfuric acid that allows smelters to maintain high operating rates under extreme treatment charge conditions. However, the support of sulfuric acid for smelting profits is not unlimited, as its price trend is itself influenced by more complex international geopolitical factors. The recent sharp escalation of the Middle East situation has brought significant uncertainty to the global sulfuric acid and sulfur supply chain. Since the joint US-Israeli military strike against Iran on February 28, 2026, the Strait of Hormuz, the world's most critical energy transport route, has rapidly fallen into a severe transit crisis. After taking office, Iran's new Supreme Leader, Mojtaba Khamenei, immediately declared that the strait would remain closed as a strategic lever against the US-Israeli alliance and suggested that neighboring countries close US military bases. The Islamic Revolutionary Guard Corps subsequently explicitly announced a ban on any vessels associated with the US or Israel from passing through the Strait of Hormuz, warning of severe consequences for unauthorized passage. The Strait of Hormuz is a critical chokepoint for global sulfur transport. Statistics show that before the conflict, over 100 ships passed through the strait daily. However, after the conflict erupted, transit traffic plummeted by over 90%, with extreme cases of no ships passing for an entire day, leaving over 3,000 vessels stranded in nearby waters. This effective blockade has not only directly impacted the crude oil market—with Brent crude futures rising over 50% within a month to exceed 114 USD per barrel—but has also severely disrupted the global supply chain for sulfur and sulfuric acid. War risks have caused shipping insurance costs to soar to over 20% of the cargo value, further increasing logistics costs and plunging global sulfur supply into a logistical crisis. Although Iran claims to allow passage for vessels from "non-hostile" countries, requiring them to obtain prior permission, actual transit volumes remain extremely low, far below global trade demand. Simultaneously, the Houthi armed group in Yemen has announced its involvement, posing new security threats to the Red Sea-Suez route. The compounding pressure on the two major shipping chokepoints of the Strait of Hormuz and the Red Sea is posing a systemic challenge to the global supply chains for energy and chemical raw materials. As the primary raw material for sulfuric acid production, the disruption in sulfur supply directly drives international and domestic sulfuric acid prices progressively higher. Given the current situation, geopolitical conflicts show no signs of easing in the short term, implying further room for sulfuric acid price increases. The continued rise in sulfuric acid prices will have a dual impact on the domestic copper smelting industry. On the one hand, increased sulfuric acid revenue will continue to provide crucial profit supplementation for smelters, enabling them to maintain production even at lower TC levels and potentially further depressing spot copper concentrate treatment charges. On the other hand, this surge in sulfuric acid prices, driven by geopolitical conflict, also makes smelter profitability highly dependent on external unstable factors, rendering the industry's overall risk resilience increasingly fragile. Notably, the extreme treatment charge environment has begun to have a tangible impact on the global layout of copper smelting capacity. Mitsubishi Materials of Japan recently announced its plan to cease operations at its Onahama copper smelter by the end of March 2027. The smelter has a crude and refined capacity of 230,000 tons, and the main reason for the closure is precisely the intensified competition in the global copper smelting industry, leading to a sharp deterioration in copper concentrate TC/RC and persistent pressure on business prospects. This decision sends a clear signal: against the backdrop of continuously bottoming treatment charges and industry profits highly dependent on byproducts and external environments, some high-cost smelting capacity or those lacking comprehensive recovery capabilities are facing pressure to exit the market. In summary, China's copper smelting industry is currently at a highly unusual cyclical juncture. On one hand, smelters, benefiting from high sulfuric acid prices, have temporarily weathered the impact of negative treatment charges, maintaining high output. On the other hand, sulfuric acid prices themselves are heavily dependent on geopolitical situations, and external variables like the Strait of Hormuz blockade introduce significant uncertainty into the sustainability of smelting profits. If tensions in the Middle East persist, sulfuric acid prices may continue to rise, leaving room for TC to fall further, potentially enhancing smelters' tolerance for extreme treatment charges in phases. However, if geopolitical tensions ease, sulfur supply chains recover, and sulfuric acid prices retreat from their highs, smelters would face the risk of a "double blow" from both low treatment charges and reduced byproduct revenue, potentially heralding a genuine phase of capacity reduction and deep adjustment for the industry. Therefore, the current apparent "resilience" of the copper smelting industry is essentially built upon a fragile balance between geopolitical factors and the byproduct market. For market participants, besides monitoring TC trends, it is crucial to closely track changes in sulfuric acid prices and the underlying geopolitical factors to make more accurate judgments regarding the production sustainability and profitability prospects of the smelting industry.

This week, the macro market still repeatedly traded around the Middle East situation and expectations for the US Fed. At the beginning of the week, tensions among the US, Israel, and Iran eased slightly, the US dollar pulled back, and risk appetite recovered temporarily, allowing copper prices to stop falling and rebound at one point. However, Iran later denied progress in the relevant negotiations, geopolitical tensions tightened again, international oil prices rose sharply, and market concerns over supply disruptions in the Strait of Hormuz resurfaced, with safe-haven sentiment rebounding accordingly and weighing on copper prices. Market bets on major central banks cutting interest rates this year were pushed back significantly, and expectations for macro liquidity weakened at the margin. Overall, this week’s copper price logic still centered on the repeated tug-of-war among geopolitical risks, oil prices, the US dollar, and interest rate cut expectations. Before macro uncertainty eases materially, copper prices will likely remain in the doldrums with rangebound fluctuations in the short term. Fundamentally, the logic of ore supply tightness continued. On March 25, Mitsubishi Materials announced that it will cease part of the copper concentrates processing business at the Onahama smelter in 2027, and explicitly mentioned the sharp deterioration in TC/RCs and pressure on smelting profits, further confirming the current reality of tight copper concentrates supply and continued damage to profitability on the smelting side. Global exchange copper inventories remained high, but demand in China had already started, and the pace of destocking in China’s social inventory exceeded market expectations. Supported by the opening of the import window and domestic demand, inventories outside China showed signs of flowing back into China. Looking ahead to next week, the macro theme is expected to remain largely unchanged. If the Middle East situation does not ease substantially, elevated oil prices and a relatively strong US dollar will likely continue to weigh on copper prices, and short-term resistance will remain; however, ore supply tightness, worsening smelting profits, and domestic demand will still provide some support for copper prices. Therefore, copper prices are expected to continue to fluctuate rangebound within a narrow range next week, with LME copper expected at $12,000-12,500/mt and SHFE copper expected at 93,000-96,500 yuan/mt. In the spot market, as imported cargoes arrive one after another, the pace of domestic inventory destocking may slow down. Although inventories are still being drawn down, spot premiums are expected to find it difficult to rise sharply due to the relatively high inventory base. Spot prices against the SHFE copper front-month contract are expected at a discount of 120 yuan/mt to a discount of 20 yuan/mt.