Market evolution: Cast iron crankshafts (CN 84831021) — 2015–2025

Introduction

This report examines the evolution of EU trade in cast iron and cast steel crankshafts (CN 84831021) between 2015 and 2025. Over this decade, the EU's position in this market has undergone a dramatic structural transformation: the bloc has shifted from a comfortable net exporter to a net importer, with exports declining sharply in volume while imports have grown. At the same time, the geographic landscape of both suppliers and customers has been reshaped by Brexit, the rise of Asian competition, and the emergence of new trade corridors. This report analyses these dynamics across three axes: the macroeconomic trade balance, the evolving partner structure, and the interplay between domestic production and external trade. The full dashboard data underpins all findings below.

1. From Surplus to Deficit: A Decade of Structural Deterioration

The most striking feature of the 2015–2025 period is the complete reversal of the EU's trade balance for cast iron crankshafts. The EU moved from a healthy trade surplus of €38.1 million in 2015 to a deficit of €31.9 million in 2025 — a swing of nearly €70 million. This section unpacks how this reversal came about.

1.1. Export volumes collapsed while import volumes held steady

Between 2015 and 2025, EU exports of cast iron crankshafts to non-EU countries fell from 20,190 tonnes to just 6,927 tonnes — a decline of 65.7%. In value terms, exports dropped from €109.9 million to €65.4 million (−40.5%). Meanwhile, imports were remarkably resilient: quantities edged up 2.1% (from 15,578 t to 15,908 t), while import values rose 35.6% (from €71.8 million to €97.3 million). The asymmetry is clear — the EU lost external demand for its crankshafts far faster than it reduced its dependence on external supply.

1.2. Rising unit prices mask a volume crisis

A closer look at unit values reveals a compensating dynamic: while export volumes fell dramatically, the average export price surged by 72.9% (from €5,445/t to €9,416/t). Import prices also rose, but more modestly (+33.0%, from €4,599/t to €6,114/t). This divergence suggests that the EU has shifted toward exporting higher-value, more specialised crankshafts while losing competitiveness in standard products. The remaining EU exports command a price premium roughly 54% above the import average — a sign that the EU's external business is concentrating in the upper end of the market.

1.3. The trade balance was already deteriorating before the pandemic

The balance did not collapse in a single shock. It deteriorated progressively: the surplus narrowed throughout the late 2010s, with the worst deficit reaching −€44.1 million in one year (the data minimum). The COVID-19 pandemic of 2020 likely amplified existing trends, but the underlying trajectory — declining EU export competitiveness — predates it. By 2025, the EU's net import reliance had shifted accordingly, though it remained relatively moderate.

2. The Shifting Map: New Suppliers, Lost Customers, and the Brexit Effect

The aggregate trade deterioration masks enormous geographic reshuffling. The identity of the EU's main suppliers and customers changed profoundly over the decade, with some partnerships collapsing and others emerging from relative insignificance.

2.1. Imports: Brazil and China surged while the United Kingdom collapsed

Among the EU's top import partners, the most dramatic shifts occurred with three countries:

China's imports into the EU grew nearly fivefold, rising from €5.1 million to €23.7 million. Brazil followed a similar trajectory, growing from €2.1 million to €10.3 million. Both countries likely leveraged lower production costs to gain market share. Meanwhile, the United Kingdom's share of EU imports collapsed by 74.2% — almost certainly a consequence of Brexit, which introduced customs barriers and regulatory friction for what had been an integrated supply chain. Türkiye also saw a sharp decline (−57.0%).

2.2. Exports: China disappeared as a customer; Mexico, Türkiye, and Switzerland grew

On the export side, the EU's largest loss was China, which absorbed €21.3 million of EU crankshafts in 2015 but only €1.9 million in 2025 — a collapse of 91.1%. This likely reflects China's massive build-up of domestic production capacity over the decade. The United Kingdom also fell sharply as an export destination (−77.7%), mirroring the import-side Brexit effect. Conversely, several markets expanded:

Mexico stands out as the fastest-growing destination (+202.1%), likely linked to nearshoring trends in the automotive sector. Switzerland and Türkiye also became more important, partially compensating for the loss of China and the UK.

2.3. Trade concentration shifted: more concentrated imports, more diversified exports

The Herfindahl-Hirschman Index (HHI) tells a complementary story. For imports by value, the HHI rose from 1,402 to 1,739 (+24.0%), indicating that EU import sources became more concentrated — with India, China, Japan, and Brazil accounting for an ever-larger share. For exports by value, the HHI fell from 1,512 to 1,141 (−24.5%), meaning EU exports became more diversified across partners as the traditional heavyweights (UK, US, China) declined in relative importance. This divergence has implications for supply-chain vulnerability: the EU's import base is narrowing while its export base is broadening.

2.4. Brexit emerges as a singular structural break for this sector

The United Kingdom appears in both the import and export top-seven lists with the steepest declines of any major partner (−74.2% for imports, −77.7% for exports). Prior to Brexit, the UK was likely deeply integrated into EU crankshaft supply chains, with components crossing the Channel multiple times during manufacturing. The post-Brexit friction — customs declarations, rules of origin, and regulatory divergence — severely disrupted these flows. The UK's decline is the single largest bilateral factor behind the EU's overall trade deterioration in this product.

3. Domestic Resilience: EU Production Tripled as the Trade Balance Worsened

Paradoxically, even as the EU's external trade position in cast iron crankshafts deteriorated sharply, domestic production surged. This section explores this apparent contradiction and what it reveals about the EU's industrial strategy in this sector.

3.1. EU production volumes and values roughly tripled

EU production of cast iron crankshafts (PRODCOM 28152230) grew from 21.1 million kg in 2015 to 59.6 million kg in 2025 — an increase of 182.3%. In value terms, production rose from €209 million to €629 million (+200.8%), with a peak at €726 million. This is a striking expansion that vastly exceeds the growth in either imports or exports, suggesting that the EU's crankshaft market is increasingly oriented toward internal consumption (i.e., serving EU-based OEMs in automotive, machinery, and other end-use sectors).

3.2. Italy has emerged as the EU's production champion

Specialisation data for 2025 shows that Italy is by far the most specialised EU producer, with an RCA of 4.47 and an RSCA of 0.63. Italy alone accounts for 35.9% of EU crankshaft production value. This aligns with the import data: Italy's imports also surged 95.5% over the period, suggesting that Italy both produces and sources significant volumes, likely serving as a hub for the broader European automotive and industrial machinery supply chain. Other specialised producers include Slovenia (RCA 2.73), Poland (RCA 1.83), and Hungary (RCA 1.50). Germany, despite being the second-largest exporter, has an RCA below 1 (0.88), indicating it no longer has a revealed comparative advantage in this specific product — though it remains a large absolute player.

3.3. Within the EU, Spain and Italy absorbed rising imports while France and Austria withdrew

Looking at EU member-state importers, the most dramatic growth was in Spain (+445.6%, from €2.0 million to €10.8 million) and Finland (+128.2%). Italy, already the largest importer, nearly doubled its share (+95.5%). On the export side, Germany's exports halved (−51.8%) and France's collapsed (−91.1%), while Italy's grew 76.8% and Poland's surged 674.9% — from a low base of €0.4 million to €3.4 million. This intra-EU reshuffling suggests a geographic reorientation of production capacity toward Southern and Central Europe, at the expense of the traditional Franco-German industrial core.

3.4. Price shocks highlight supplier vulnerability

The volatility and shock analysis identified three notable price shock events:

The 2021 Indian import price shock is particularly significant given India's position as a major supplier (36.0% of import value). Meanwhile, the volatility coefficients reveal that some of the EU's newer or smaller trade relationships are highly unstable — EU imports from Việt Nam had a coefficient of variation of 3.17, and exports to China and South Africa showed similarly elevated volatility (CVs of 1.59 and 1.36 respectively). These high-volatility corridors represent both risk and opportunity: they are susceptible to disruption but may also offer price advantages during stable periods.

Conclusion

The EU's market for cast iron crankshafts has undergone a profound transformation between 2015 and 2025. The bloc has shifted from a net exporter with a €38 million surplus to a net importer with a €32 million deficit — a swing driven primarily by a two-thirds collapse in export volumes. Several forces have converged to produce this outcome: Brexit severed what had been a deeply integrated UK-EU supply chain; China built up domestic capacity and ceased to be a major customer for EU crankshafts; and low-cost producers in Brazil and China gained significant share in EU import markets.

Yet the picture is not simply one of decline. EU domestic production has roughly tripled over the period, suggesting that the market's centre of gravity has shifted inward — EU producers are increasingly serving EU-based OEMs rather than exporting. Within the EU, Italy has emerged as the dominant hub, combining strong specialisation, high production, and growing exports. Poland has also risen sharply as an exporter, while the traditional Franco-German engine has lost ground.

Looking forward, the main risks are import concentration (the sourcing base is narrowing, with India, China, Japan, and Brazil accounting for an ever-larger share) and volatility in newer supply corridors. The main opportunity lies in the EU's demonstrated ability to scale domestic production, which could serve as a foundation for greater strategic autonomy in this critical mechanical component — provided that cost competitiveness and energy prices do not erode the advantage further.