Market Data

What the PPI for Steel Mill Products Actually Measures, and Where It Stands at 348.53

A plain-English guide to the BLS index that tracks what U.S. mills charge for hot-rolled coil, plate, rebar and pipe, how it's built, what moves it, and how to read it.

The Producer Price Index for Steel Mill Products is a Bureau of Labor Statistics index (1982=100) tracking the average price U.S. steel mills receive for products like hot-rolled coil, plate, rebar, and pipe. As of the latest reading, for May 2026, it stands at 348.53, meaning mill prices are about 3.5x their 1982 level, up about 6.7% from a year ago. For anyone new to steel indexing, it is the single most-cited benchmark in American metal contracts, and worth understanding precisely.

What the index covers, and what it doesn't

The series aggregates the mill gate: sheet and strip (hot-rolled, cold-rolled, coated), plate, structural shapes, bar and rebar, rail, and pipe and tube, weighted by their share of U.S. mill revenue. It measures the first-sale price mills invoice, net of discounts, not the service-center resale price, not a futures settlement, and not the price of imported steel at the dock. Because it blends flat-rolled and long products, it moves more smoothly than any single spot quote: a hot-rolled-coil spike shows up damped by steadier plate and rail pricing. That smoothing is a feature for contract use, escalation tied to the composite index tracks a fabricator's real basket better than one volatile product quote.

What moves it

Three forces dominate. Demand and mill utilization: steel pricing is acutely capacity-sensitive, and when mills run full, lead times stretch and prices follow, order books move this index faster than costs do. Input costs: scrap for electric-arc furnaces, iron ore and coking coal for integrated mills, plus energy; sustained moves in those feedstocks reset the floor under mill pricing. Trade policy: tariffs, quotas, and import volumes set the ceiling imported competition places on domestic prices, which is why policy announcements can move the index ahead of any physical shortage. Watching utilization, scrap, and import flows together usually explains a given month's print.

Keep the series distinct from its neighbors, because contracts frequently confuse them. The broader iron-and-steel PPI reaches upstream into raw and semi-finished forms, so it swings harder with scrap and ore; single-product benchmarks like a hot-rolled-coil spot assessment move faster still, in both directions. This mill-products composite sits deliberately in the middle, downstream enough to reflect what fabricators actually buy, broad enough to damp any one product's noise. That middle position is why it is the workhorse of escalation language: a clause tied to a volatile single-product quote whipsaws both parties, while one tied to this composite tracks a real purchasing basket. When writing or auditing a contract, check the exact BLS series cited; a surprising number of steel disputes turn out to be two parties pointing at two different indexes.

PPI: Steel Mill Products, May 2026 (1982=100): 348.53. Ranged from 291.56 in Nov 2025 to 348.53 in May 2026 across the archived history.

Reading the level like a buyer

The base year gives scale: a basket of mill products costing $100,000 in 1982 runs about $348,530 at the current reading. Day to day, though, the index earns its keep as a referee. If a supplier's increase letter outruns the index change over the same months, the difference is negotiable; if your steel budget was built at the archived low of 291.56 (Nov 2025), the current print tells you exactly how stale it is. And with the index climbing and sitting 100% of the way up its archived range, the level also says which end of the recent cycle your open quotes are exposed to.

The composite index moves more smoothly than any single spot quote, which is exactly why contracts cite it.

Run gauge, width, and current pricing through the steel coil cost calculator to translate the index into dollars per coil. Cost a coil at today's index

Published 2026-07-13.