The United States doubled tariffs on steel and aluminium imports on Wednesday, activating a hike in the duties on the imported metals to 50% from the 25% rate introduced in March. The day also marks the Trump administration’s deadline for trading partners to submit their “best offers” to avoid further steep import duties set to take effect in early July.

The US has urged trade partners to submit their best offers by July 8, but no proposals have been received yet.

Here's what we know. What's the tariff rate on imported steel and aluminum now? Steel and aluminum imports are currently taxed at 25% — a rate that both metals have faced across