HS chapter 73, all origins, from official duty receipts. Burden 1% in 2017-06 → peak 42.1% in 2025-07 → 41.4% in 2026-06, on $1.3B of duty in the latest month.
What America imports in articles of iron & steel · the whole tariff story · any origin: tariff_burden(origin: "Vietnam", commodity: "73") · any code: tariff_lookup(hs, origin) via /connect. Not customs or legal advice.