Tariffs are the price of entry into a market
When a government recalibrates the price of entry for foreign goods, markets respond not merely to numbers but to the promise of renewed possibility. On the first days of June 2026, a presidential proclamation in Washington quietly altered the competitive geometry of steel trade, and by Tuesday morning in São Paulo, three of Brazil's largest steelmakers had already risen sharply — a reminder that policy signed in one capital is often felt most viscerally in another. The reduction of certain US steel and aluminum tariffs from 25 to 15 percent, locked in through the end of 2027, offered Brazilian exporters not just lower costs but something rarer: a horizon stable enough to plan against.
- CSN, Usiminas, and Gerdau surged between 6.5 and nearly 9 percent in a single session, pulling the broader Ibovespa index upward with them.
- Trump's proclamation introduced a tiered tariff structure — 15 percent for most steel-derived goods, 10 percent for manufacturers willing to source at least 85 percent of their materials from within the United States.
- The surgical specificity of the changes — covering agricultural machinery, HVAC systems, and mobile industrial equipment while adding new 25 percent duties on steel racks and aluminum lithographic plates — signals calibration, not capitulation.
- With the new rates taking effect June 8 and guaranteed through December 2027, exporters and investors gained an eighteen-month window of relative certainty to restructure supply chains and commit capital.
- Brazilian steelmakers now face a more competitive entry point into the American market, with lower tariffs narrowing the price gap between their exports and domestic US producers.
On Monday, President Trump signed a proclamation reshaping the tariff landscape for steel and aluminum imports into the United States. By Tuesday morning in Brazil, the market had already delivered its verdict: CSN climbed nearly 9 percent, Usiminas jumped over 8.5 percent, and Gerdau rose more than 6.5 percent — gains large enough to lift the broader Ibovespa index for the session.
The proclamation modified Section 232 national security tariffs with notable precision. Duties on steel and aluminum-derived products — including agricultural machinery, residential heating equipment, air conditioning units, and ventilation systems — fell from 25 to 15 percent. Mobile industrial equipment like excavators and forklifts received the same new rate, though only when imported from countries with qualifying trade agreements.
A third tier offered further relief to foreign manufacturers willing to integrate American materials into their supply chains. Companies sourcing at least 85 percent of their capital equipment's steel or aluminum from within the United States could qualify for a 10 percent rate — a direct incentive the White House described as a means to rebuild the country's industrial base.
The administration also added new categories to the full 25 percent rate — steel racks and aluminum lithographic plates — signaling that the policy was a careful recalibration rather than a broad loosening. The new rates take effect June 8, giving exporters less than a week to adjust logistics and pricing.
Crucially, the White House confirmed the adjustments would remain in place through December 31, 2027 — an eighteen-month window of certainty that allows Brazilian steelmakers to plan investments and refine their US export strategies without fear of sudden reversal. For CSN, Usiminas, and Gerdau, the tariff reduction meaningfully improves their competitive position in the American market, and investors wasted no time pricing in that advantage.
On Monday, President Donald Trump signed a proclamation that would reshape the tariff landscape for steel and aluminum imports into the United States. By Tuesday morning in Brazil, the market had already absorbed the news, and three of the country's largest steelmakers were surging. CSN climbed 8.85 percent to 7.13 reais per share. Usiminas jumped 8.57 percent to 12.04 reais. Gerdau rose 6.53 percent to 24.65 reais. The gains were substantial enough to lead the broader Ibovespa index higher for the session.
The proclamation modified Trump's Section 232 national security tariffs on certain aluminum, steel, and copper imports. The changes were surgical in their specificity. Tariffs on a range of steel and aluminum-derived products—agricultural machinery, residential heating equipment, air conditioning units, and ventilation systems—would drop from 25 percent to 15 percent. For mobile industrial equipment like excavators and forklifts, a new 15 percent rate would apply, but only when imported from countries with qualifying trade agreements.
A third tier emerged for foreign manufacturers willing to source their materials domestically. Companies could qualify for a 10 percent tariff rate if their capital equipment contained at least 85 percent steel or aluminum that had been cast, poured, or molded within the United States by weight. This created a direct incentive for foreign producers to integrate American-sourced materials into their supply chains. The White House framed the adjustments as a way to "stimulate short-term investment that will rebuild the country's industrial base."
The proclamation also added two new categories of imported steel and aluminum products that would face the full 25 percent rate: steel racks and aluminum lithographic plates. These additions suggested the administration was not simply loosening restrictions across the board, but rather calibrating them to protect certain domestic producers while opening doors elsewhere.
The effective date mattered for traders and exporters watching the calendar. The new tariff rates would apply to goods imported or withdrawn from bonded warehouses beginning June 8. That gave companies less than a week to adjust their logistics and pricing. More importantly, the White House announced that these adjustments would remain in place through December 31, 2027—a window of nearly eighteen months that provided enough certainty for steelmakers to plan capital investments and adjust their export strategies without fear of sudden reversal.
For Brazilian steelmakers, the reduction from 25 to 15 percent on many products represented a meaningful improvement in their competitive position in the American market. The tariff cut lowered the cost of entry for their goods and made their prices more attractive relative to domestic American producers. The market's immediate response—the sharp gains in CSN, Usiminas, and Gerdau stock—reflected investor confidence that the changes would translate into higher export volumes and improved margins over the coming months.
Citações Notáveis
The adjustments are intended to stimulate short-term investment that will rebuild the country's industrial base— White House statement
A Conversa do Hearth Outra perspectiva sobre a história
Why did the market react so quickly to this news? These are tariff adjustments, not a trade deal.
Because tariffs are the price of entry. When you lower the cost of shipping your product into a market, you become more competitive overnight. Investors saw that Brazilian steel would now undercut American steel by a wider margin.
But Trump framed this as protecting American industry. How does lowering tariffs do that?
It's more nuanced than that. He's lowering tariffs on finished goods and machinery, but he's also creating incentives for foreign companies to source their materials from America. He's trying to protect the American steel mills that supply manufacturers, not necessarily the mills that compete with imports.
So Brazilian steelmakers benefit because they export finished products?
Exactly. A Brazilian company selling agricultural equipment to the U.S. now pays 15 percent instead of 25 percent. That's a real cost advantage. But a Brazilian mill selling raw steel ingots might not see the same benefit.
Why does the tariff stay in place until the end of 2027?
Certainty. If you're a steelmaker deciding whether to build a new plant or expand capacity, you need to know the rules won't change in six months. Eighteen months of stable tariffs gives you time to make those bets.
What happens on January 1, 2028?
That's the question nobody can answer yet. The administration could extend it, modify it, or let it expire. For now, companies are planning for the window they have.