SMU Blast Furnace Status
Blast Furnace Status
SMU monitors North American integrated steel mills and the status of their blast furnaces (BFs). BFs are used to produce pig iron, which is the first stage of the steelmaking process. In addition to their operation status, the table below includes information on plant name, furnace ID, daily furnace capacity, and comments about the furnace.
Blast Furnace Status: AHMSA (Mexico)
| Mill Name / Plant | Furnace ID | Daily Capacity (Short Tons) | Running? | Comments |
|---|---|---|---|---|
| AHMSA | No. 4 | 2700 | No | Idled late 2022/early 2023. |
| No. 5 | 6500 | No | Idled late 2022/early 2023. | |
| No. 6 | 4500 | No | Idled January 2020. |
Blast Furnace Status: Algoma (Canada)
| Mill Name/ Plant | Furnace ID | Daily Capacity (Short Tons) | Running? | Comments |
|---|---|---|---|---|
| Algoma | No. 7 | 8400 | No | Idled January 2026. Will be decommissioned or demolished. |
| No. 6 | 3000 | No | Idle. Will be decommissioned or demolished. |
Blast Furnace Status: ArcelorMittal Dofasco (Canada)
| Mill Name / Plant | Furnace ID | Daily Capacity (Short Tons) | Running? | Comments |
|---|---|---|---|---|
| Hamilton, Ontario | No. 2 | 3200 | Yes | |
| No. 3 | 2500 | No | No. Permanently idled in 2021. | |
| No. 4 | 4700 | Yes |
Blast Furnace Status: ArcelorMittal Mexico
| Mill Name / Plant | Furnace ID | Daily Capacity (Short Tons) | Running? | Comments |
|---|---|---|---|---|
| Lazaro Cardenas, Michoacan | No. 1 | ~4520 (Note the company uses this furnace for wire rod production, not sheet.) | Yes | Restarted January 2026 after 6-month unplanned outage. |
Blast Furnace Status: Cleveland-Cliffs
| Mill Name / Plant | Furnace ID | Daily Capacity (Short Tons) | Running? | Comments |
|---|---|---|---|---|
| Ashland | Amanda | 6000 | No | Former AK Steel. Decommissioned 2015. Demolished 2022. |
| Burns Harbor | C Furnace | 7400 | Yes | Reline planned for 2027. |
| D Furnace | 7400 | Yes | ||
| Cleveland | C-5 | 4350 | Yes | Restarted August 2022 after extended outage for reline. |
| C-6 | 4150 | Yes | Restarted July 2025 after being on hot idle since October 2024. | |
| Dearborn | C Furnace | 6000 | No | Indefinitely idled July 2025. |
| Hamilton - Stelco (Canada) | E Furnace | 5500 | No | Shut down October 2010 and removed from active status. |
| Indiana Harbor | IH-3 W | 2500 | No | Permanently idled in 2019. |
| IH-4 W | 4900 | Yes | Cliffs said on April 22, 2022 that IH-4 had been indefinitely idled. | |
| IH-5 E | 2900 | No | Not operated since 2010. Decommissioned in 2015. Since demolished. | |
| IH-6 E | 5000 | No | Not operated since 2010. Decommissioned in 2015. Since demolished. | |
| IH-7 E | 11500 | Yes | Restarted late 2022 after 3-day outage. | |
| Lake Erie - Stelco (Canada) | No. 1 | 6575 | Yes | |
| Middletown | No. 3 | 6500 | Yes | Reline is planned for after the 2027 Burns Harbor C Furnace reline. |
Blast Furnace Status: U.S. Steel
| Mill Name | Furnace ID | Daily Capacity (Short Tons) | Running? | Comments |
|---|---|---|---|---|
| Mon Valley Works (Edgar Thomson Plant) | No. 1 | 3200 | Yes | |
| No. 3 | 2900 | Yes | Restarted late January 2023 after H2'22 idling. | |
| Fairfield Works | No. 8 | 6000 | No | Permanently idled August 2015 and removed from active status list. |
| Gary Works | No. 4 | 3800 | Yes | Restarted May 20, 2024, after 45-day planned outage |
| No. 6 | 3450 | Yes | ||
| No. 8 | 3000 | Yes | Restarted March 2023 after 6-month outage due to market conditions. | |
| No. 14 | 7450 | Yes | 100-day outage for furnace reline is planned from May to August 2026. | |
| Granite City Works | A Furnace | 3600 | No | Indefinitely idled April 2020. |
| B Furnace | 3600 | No | In restarting process as of Dec. 2025. Full restart planned for Q2'26. | |
| Great Lakes Works | A-1 | 4100 | No | Permanently idled June 2019 and April 2020. |
| B-2 | 3700 | No | ||
| D-4 | 3650 | No |
Last reviewed: Feb. 11, 2026