Physical demand in Asia remains insufficient to provide a firm floor for prices, Barclays says.
But prices are expected to fall back once "market dislocations ease."
Spot copper was up 0.59% to US$2.749/lb on the London Metal Exchange.
The country's total steel imports grew 13.5% during the period.
The company expects the use of lightweight high-strength steel in Brazilian-made vehicles to increase to 25% by 2025 from the current 6%, in line with a global auto-industry trend.
Spot copper was up 1.52% to US$2.733/lb on the London Metal Exchange.
Under the deal, South Korea's Eximbank can provide up to US$2bn in financing to support Vale's projects.
Shin Hwa is eyeing a 20% share of Brazil's current 700,000t/y tinplate demand by 2017.