SEOUL — South Korea is moving swiftly to cushion the economic blow from a sharp increase in U.S. tariffs on steel and aluminum imports. Following the Biden administration’s decision to raise tariffs on certain steel and aluminum products to 50%, the South Korean government has launched a multi-pronged strategy to protect its domestic industries and sustain vital trade relations with the United States.
This development is part of a broader U.S. policy to boost domestic manufacturing under protectionist trade frameworks. While intended to support American producers, the decision has sent shockwaves through global steel markets. South Korea, one of the world’s top steel exporters, is among the most affected.
The tariff announcement triggered immediate market reactions. Shares of major South Korean steel producers dropped—Hyundai Steel fell more than 6%, while POSCO Holdings declined around 3% on the KOSPI index. Investors fear the elevated tariffs will erode South Korea’s competitiveness in its second-largest steel export market. In 2023, South Korea exported over US$4 billion worth of steel to the U.S., making up nearly 11% of its total steel exports. With the new tariff in effect, Korean firms may find the cost structure of exporting unsustainable, forcing them to absorb losses or raise prices for U.S. buyers.
In response, South Korea’s Ministry of Trade, Industry, and Energy held emergency talks with major steelmakers and trade policy experts. A ministry spokesperson told local media the government’s immediate goal is to minimize long-term disruption and protect jobs. Minister of Trade Ahn Duk-geun has contacted U.S. Commerce Secretary Gina Raimondo to request an exemption or reconsideration of the policy, citing the strategic economic and security alliance between the two countries.
“The decision to impose 50% tariffs places undue burden on long-standing allies,” said Minister Ahn. “We urge the U.S. government to review its position in the spirit of mutual economic benefit and fairness.”
Recognizing that diplomatic channels may not yield immediate relief, Korean firms are also exploring alternative strategies. Hyundai Steel has announced plans to invest more than US$5.8 billion in a new steel facility in Louisiana, with operations expected to begin in 2029. The investment is intended to reduce exposure to future trade barriers and create U.S. jobs, which could appeal to American policymakers.
POSCO is also reportedly considering expanding its U.S. manufacturing footprint, although no official plans have been confirmed. Simultaneously, South Korean trade officials are accelerating efforts to diversify export markets in Southeast Asia, Europe, and the Middle East to counter potential losses in the U.S. market.
The impact of the tariffs extends beyond the steel industry. Sectors like automotive, shipbuilding, and construction—key consumers of steel—are preparing for higher input costs and possible supply chain disruptions. A report by the Korea Institute for Industrial Economics and Trade (KIET) warns that without policy interventions, steel exports could decline by 12% in 2025. The report also highlights potential job losses, particularly among small- and medium-sized enterprises that lack the resilience to absorb cost shocks.
In anticipation of these challenges, the South Korean government is drafting a support package for affected industries. Proposed measures include tax incentives, subsidized loans, and grants to support the exploration of alternative markets and the modernization of facilities to meet international green standards.
The situation underscores the volatility of global trade amid rising protectionist trends. While the U.S. argues that the tariffs support domestic revival, South Korea and other trade-dependent nations are left managing the broader economic consequences. Economists warn that if tit-for-tat protectionism escalates, global supply chains and post-pandemic recovery could face significant setbacks.
“If countries continue down this path, it could severely disrupt global supply chains and economic recovery,” said Professor Kim Tae-hoon, a trade expert at Seoul National University.
With the new tariff already active, South Korea is racing to respond—through diplomacy, investment, and adaptation. The outcome will likely influence not only its trade relationship with the U.S. but also its long-term approach to global economic engagement.
