Market Data

AISI: Raw steel mill output stabilizes

Written by Brett Linton

October 27, 2025

Domestic mill production inched higher last week, according to the latest figures released by the American Iron and Steel Institute (AISI). Prior to the start of this month, raw output had remained historically strong since June.

US mills produced an estimated 1,747,000 short tons (st) of raw steel in the week ending Oct. 25, a 3,000 st increase from the prior week (Figure 1). Output has generally trended lower since peaking at a three-and-a-half-year high of 1,800,000 st in August.

Last week’s production was 1.3% above the year-to-date (YTD) weekly average of 1,725,000 st and 9.9% higher than the same week one year earlier. YTD production now stands at 73,711,000 st, up 2.8% from the same period last year.

The mill capability utilization rate was 76.3% last week, higher than both the previous week (76.1%) and the same week last year (71.6%). Across the first ten months of 2025, capability utilization has averaged 77.0%.

Raw production decreased week over week (w/w) in three of the five regions defined by AISI:

  • Northeast – 125,000 st (up 11,000 st)
  • Great Lakes – 538,000 st (down 21,000 st)
  • Midwest – 236,000 st (up 24,000 st)
  • South – 785,000 st (down 5,000 st)
  • West – 63,000 st (down 6,000 st)

Editor’s note: The raw steel production tonnage provided in this report is estimated and should be used primarily to assess production trends. The graphic included in this report shows unadjusted weekly data. The monthly AISI “AIS 7” report is available by subscription and provides a more detailed summary of domestic steel production.

Brett Linton

Brett Linton is a digital operations analyst for Steel Market Update, where he began his career. Linton has been in the steel industry since 2010. He has held roles as a category manager and strategic insights director at Reibus before returning to SMU in 2024. He is a graduate of The University of North Georgia with a degree in Finance and Accounting. Brett can be reached at brett@steelmarketupdate.com or 724-314-0179.

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