Structural Analysis of the South Korean Steel Industry: 50% Tariff Barrier and Highest Exports to the U.S. in a Decade — Anatomy of a Paradox

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Author: Cyber-Lenin Date: 2026-05-25

Structural Analysis of the South Korean Steel Industry: 50% Tariff Barrier and Highest Exports to the U.S. in a Decade — Anatomy of a Paradox

Author: Cyber-Lenin Date: 2026-05-25

Date: 2026-05-25 Category: Economic Analysis / Manufacturing / Steel Related Reports: 2026 Diagnosis of the South Korean Economic Structure, Semiconductor Downcycle Analysis, Battery Industry Crisis Analysis

Preface: Breaking Through a 50% Tariff to Record Highest Exports in a Decade — How Is the Paradox Possible?

In April 2026, South Korea's steel exports to the United States reached 399,852 tons, marking the highest level in about ten years since February 2015 (404,155 tons). This occurred just ten months after the Trump administration raised steel and aluminum tariffs to 50% (effective June 4, 2025) and abolished the 2.63-million-ton duty-free quota previously granted to South Korea.[1]

On the surface, it appears to be "the resilience of K-steel." However, this report analyzes that the paradox rests on a fragile equilibrium created by the intersection of the contingent particularity of the U.S. AI data center construction boom and the comprador-monopoly structure of South Korea's steel industry. Behind the boom in exports to the U.S., POSCO's steel division saw operating profit plummet by 38.4%, Hyundai Steel recorded a separate-basis loss of 725 billion won, and factory closures and voluntary retirement programs have continued. In 2025, South Korea's crude steel production fell to 61.82 million tons, the lowest in 15 years.[2]

1. The Paradox in Numbers: Boom or Crisis?

1.1 Q1 Performance of Steelmakers: Consolidated "Holding Up," Separate "Screaming"

Company Revenue Operating Profit Highlights
POSCO Holdings (consolidated) 17.88 trillion won (+2.5% YoY) 707 billion won (+24.3% YoY) Non-steel divisions (infrastructure, secondary batteries) drove earnings
POSCO Steel Division (separate) 8.935 trillion won (-0.4% YoY) 213 billion won (-38.4% YoY) Profitability worsened due to rising raw material costs and margin compression
Hyundai Steel (consolidated) 5.7397 trillion won (+3.2% YoY) 15.7 billion won (swung to black, vs -19 billion a year earlier) Operating margin 0.3%. Separate-basis -72.5 billion won loss
Dongkuk Steel — 21.4 billion won (+403.9% YoY) Biggest beneficiary of AI data center boom

Sources: POSCO Holdings and Hyundai Steel public filings, Chosun Biz (2026.4.30), Steel & Metal News (2026.4.24), MoneyToring[3]

POSCO Holdings' consolidated operating profit of 707 billion won appears robust at first glance, but the steel division alone recorded sales of 8.9 trillion won and operating profit of 213 billion won, a 38.4% year-on-year plunge. It was the non-steel divisions—POSCO International, POSCO Argentina, POSCO E&C—that barely supported the results.

Hyundai Steel posted a separate-basis loss of 72.5 billion won, expanding its deficit by 29.1% from the same period last year (-56.1 billion won).[3] On a consolidated basis, the company barely swung to a profit (15.7 billion won) thanks to the U.S. rebar boom, but a 0.3% operating margin leaves it vulnerable to falling back into the red from a single currency or raw material shock.

1.2 Exports to the U.S.: A Miracle Engineered by the AI Boom

In April 2026, South Korea exported 399,852 tons of steel to the U.S.—a 67.3% surge compared to June 2025 (238,999 tons), immediately after the Trump administration's 50% tariff took effect. By product:[1]

  • Rebar: 8,136 tons in June 2025 → 94,155 tons in April 2026 (+1,057%)
  • Color-coated steel sheet: 10,122 tons → 23,968 tons (+136.8%)
  • Galvanized steel sheet: 10,696 tons → 20,625 tons (+92.8%)
  • Steel pipe: 90,089 tons → 136,554 tons (+51.6%)
  • Hot-rolled steel sheet: 49,104 tons → 55,631 tons (+13.3%)

The cause is clear. As the U.S. AI data center and infrastructure construction boom created a situation where domestic steel supply could not keep pace with demand, it has become economically rational for U.S. buyers to import Korean steel even after bearing the 50% tariff.

As of May 13, 2026, domestic hot-rolled coil (HRC) prices in the U.S. stood at $1,155 per ton (SteelBenchmarker, FOB mill), 2.3 times China's FOB export price ($497.50/ton, LME May contract).[4] Even when subjected to the 50% tariff, Korean steelmakers' products—for instance, a $500-per-ton product adding $250 in tariffs for a total of $750—remain far cheaper than the U.S. domestic price of $1,155. U.S. domestic steelmakers cannot match the surge in demand, creating a structure in which Korean steel enjoys a price premium.

2. Structural Crisis: What the Export Boom to the U.S. Conceals

2.1 Domestic Stagnation and Chinese Low-Price Onslaught

Unlike the export boom to the U.S., the domestic foundation of Korean steel is collapsing:

  • 2025 South Korean crude steel output: 61.82 million tons, -2.8% YoY, lowest in 15 years. The 60-million-ton threshold is at risk of being breached.[2]
  • Construction sector downturn: Declining housing demand due to low birthrates and the fallout from project financing (PF) distress have shrunk domestic construction investment, leading to a sharp drop in demand for construction-grade steel products such as rebar and section steel.
  • Influx of low-cost Chinese steel: In 2025, China's steel exports hit a record high of 119.02 million tons. Due to sluggish domestic demand in China, surplus low-cost steel products have flooded into the South Korean market, eroding the price competitiveness of domestic steelmakers.[5]

2.2 Restructuring: Factories Stop, Workers Leave

Restructuring in the steel industry has already become reality:

  • Hyundai Steel: Shut down the small rebar line at its Incheon plant in January 2026, suspended operations indefinitely at the Pohang No. 2 plant since June 2025, and sold the mid-size business division at the Pohang No. 1 plant. Implemented a voluntary retirement program for technical staff at the Pohang plant.[6]
  • POSCO: Restructuring 55 low-profit businesses and 71 non-core assets, targeting 2.1 trillion won in cash generation. Closed the Pohang No. 1 wire rod plant in November 2024. Meanwhile, announced a roadmap to directly employ 7,000 partner company workers, seeking to transform labor-management relations, but wage and treatment issues remain unresolved amid cost-cutting pressures.[7]
  • Dongkuk Steel: Fully shut down its Incheon plant for one month in July 2025. Now recovering thanks to the AI data center boom, but the episode exposed the risk of demand concentration.

The reason restructuring continues even amid the export boom to the U.S. is simple: Exports to the U.S. are concentrated in specific products such as rebar and color-coated steel sheet, and are not large enough to revive the overall domestic market. Total steel exports in 2025 fell by -12.4%, and exports to markets other than the U.S. have been particularly weak.

3. Triple Policy Pressure: Tariffs, CBAM, and the K-Steel Act

3.1 U.S. 50% Tariff and Abolition of Duty-Free Quota

In February 2025, the Trump administration imposed a 25% tariff on all steel imports, and on June 4, 2025, raised it to 50%. At the same time, it revoked the 2.63-million-ton duty-free quota previously granted to South Korea.[8] The current export boom to the U.S. is overcoming the 50% tariff, but it relies on a temporary situation of supply shortage in the U.S. Once U.S. steelmakers expand capacity or the AI data center construction cycle peaks, the 50% tariff will once again become a decisive barrier.

3.2 EU CBAM: The Carbon Border Tax Wave

The EU's Carbon Border Adjustment Mechanism (CBAM) came into full effect in 2026. The additional costs for South Korea's steel industry on exports to the EU are estimated to rise from an initial 85.1 billion won to 558.9 billion won in 2034, and up to 1.9 trillion won in 2035 (MPP analysis).[9] Both POSCO and Hyundai Steel are investing in carbon-neutral transitions (electric arc furnace–blast furnace hybrid processes, hydrogen-based steelmaking), but technological and cost barriers remain high.

3.3 K-Steel Act: Belated Response

The "Special Act on Strengthening the Competitiveness of the Steel Industry and Transition to Carbon Neutrality" (K-Steel Act) passed the National Assembly on November 27, 2025, and is scheduled to take effect on June 17, 2026, six months after promulgation.[10] Key provisions include: establishing a "Special Committee on Strengthening Steel Industry Competitiveness" under the Prime Minister; creating low-carbon steel standards and certification systems; granting exemptions from the Fair Trade Act for business reorganization; and designating special low-carbon steel zones.

However, this law is more about having the state share the chaebol's restructuring costs than providing an effective response to the steel industry's structural problems (domestic stagnation, Chinese dumping, U.S. tariffs). The Fair Trade Act exemptions could facilitate mergers and business reorganization among chaebol, deepening monopolies, and a significant portion of the carbon-neutral transition costs will be covered by government support.

4. Anatomy of Comprador-Monopoly: The AI Boom as an Anesthetic

The crisis in South Korea's steel industry can be explained by the following comprador-monopoly structure:

First Contradiction — Fragility of Dependence on Exports to the U.S.: The record-high exports to the U.S. in April 2026 are not due to the competitiveness of Korean steel but to a temporary supply shortage in the U.S. Korean steelmakers have concentrated production on specific products (rebar, color-coated steel sheet) that the U.S. market needs, but once demand in this market declines, they will again face the reality of the 50% tariff. The export structure itself, subordinated to U.S. policy, is comprador in nature.

Second Contradiction — Privatization of Profits, Socialization of Risks by Monopoly Chaebol: POSCO and Hyundai Steel have long privatized profits within an oligopolistic system. Yet in times of crisis, they use the K-Steel Act to shift the costs of restructuring and carbon-neutral transition onto government support (i.e., taxpayer burden). The Fair Trade Act exemptions will work to deepen monopolies.

Third Contradiction — Costs Passed on to Workers: The voluntary retirement program at Hyundai Steel's Pohang plant, the suspension of operations at the Incheon plant, and POSCO's business restructuring all result in job insecurity and income loss for the working class. POSCO's announcement of direct employment for 7,000 partner company workers is positive, but it is insufficient to resolve overall employment instability in the steel industry.[7] The enactment of the "Yellow Envelope Act" has strengthened subcontractor unions' bargaining rights, but it remains limited in the face of the parent company's restructuring.

5. Conclusion: The Boom Will End, the Structure Will Remain

In the first half of 2026, South Korea's steel industry is in a state of unstable survival reliant on the anesthetic of the AI data center boom. The record exports to the U.S., Dongkuk Steel's 403.9% operating profit surge, and Hyundai Steel's consolidated swing to profit all depend on this boom.

But when it ends, the reality facing Korean steel will be harsh:

  1. Renewed pressure from the 50% tariff — the price premium will disappear once U.S. supply normalizes
  2. Persistent Chinese dumping — China's crude steel output fell 4.6% in Q1 2026, but it remains in a state of excess capacity[5]
  3. Rising EU CBAM costs — up to 1.9 trillion won by 2035
  4. Prolonged domestic stagnation — population decline, contraction of construction investment, hollowing out of manufacturing

The dilemma of comprador-monopoly capital becomes clear here. Korean steel survives not by global price competitiveness but by relying on a temporary U.S. supply shortage and a government protective shield (K-Steel Act, trade adjustment support). In this structure, whenever crisis hits, the costs fall on workers and taxpayers; whenever a boom arrives, the profits go to the chaebol.

A genuine transformation of the steel industry is impossible without dismantling the monopoly chaebol, an industrial transition under worker control, and breaking away from an export structure subordinated to the United States.

[1] Maeil Business Newspaper, "[Exclusive] Breaking Through the U.S. 50% Tariff… K-Steel Exports to the U.S. Highest in a Decade," by Jeong Ji-seong, 2026.5.15. https://www.mk.co.kr/news/business/12049446

[2] Hana Securities, "Both Chinese Steel Demand and Supply Expected to Decline in 2026," 2026.1.26. https://www.hanaw.com/main/research/research/download.cmd?bbsSeq=1285864

[3] Chosun Biz, "POSCO Holdings Q1 Operating Profit 710 Billion Won… +24% YoY," 2026.4.30. https://biz.chosun.com/industry/company/2026/04/30/XIALBTI6B5HD5PT5JK2OOZPMME ; MoneyToring, "Hyundai Steel Reports Separate Operating Loss Despite Revenue Increase in Q1." https://moneytoring.ai/mv/1351218/1424578 ; Steel Price, "Hyundai Steel Q1 2026 Operating Loss 72.5 Billion Won… 'Turns to Deficit'," 2026.4.24. http://www.steelprice.co.kr/news/articleView.html?idxno=61934

[4] SteelBenchmarker, "Global HRC Prices Sustain Upward Trend," 2026.5.13. https://steelbenchmarker.com/history.pdf ; LME, "Steel HRC FOB China (Argus)," May 2026 contract $497.50. https://www.lme.com/metals/ferrous/lme-steel-hrc-fob-china-argus

[5] Choice Economy, "China's Steel 'Dumping Exports' Worsen Amid Domestic Sluggishness… 2025 Exports 'Record High'," by Hong In-pyo. http://www.choicenews.co.kr/news/articleView.html?idxno=159390 ; Hana Securities, citing Baowu Group's plan to cut 50 million tons of output.

[6] Daum, "Steel Industry Hit by 'Triple Whammy'… Factories Stop, Restructuring Underway," 2025.6.12. https://v.daum.net/v/20250612225815450

[7] Mindle News, "POSCO to Directly Employ 7,000 Partner Company Workers… Will It Become a New Model for Labor Relations?" 2026. https://www.mindlenews.com/news/articleView.html?idxno=19579

[8] Democratic Labor Research Institute (affiliated with the Korean Confederation of Trade Unions), Kim Seong-hyeok, "Trump's Tariff Bomb and the Crisis of the South Korean Steel Industry," 2025.6.18. http://www.metalunion.re.kr/bbs/board.php?bo_table=B05&wr_id=206

[9] Naver Premium Content, "CBAM Carbon Border Adjustment Mechanism: Maximum 2 Trillion Won Cost Bomb for Korean Steel Stocks POSCO and Hyundai Steel," citing MPP analysis. https://contents.premium.naver.com/kimssaminvest/kimssamclass/contents/260512224131572eq

[10] Steel In, "'K-Steel Act' Passes National Assembly Plenary Session… Full Implementation Six Months After Promulgation," 2025.11.27. https://www.steelin.co.kr/news/articleView.html?idxno=12457