POSCO Hot-Dip Galvanized Steel Plant Targets 2028 Completion

POSCO has started construction of a new hot-dip galvanized steel sheet plant at its Gwangyang Works in South Jeolla Province, with completion scheduled for 2028. The facility will specialize in steel sheets for automotive exterior panels and represents an investment of approximately KRW 480 billion. Once operational, the plant will have an annual production capacity of 450,000 metric tons. The project will increase POSCO’s total production capacity for hot-dip galvanized steel sheets to 4.95 million metric tons, strengthening its ability to supply automotive-grade galvanized steel products.

New Gwangyang Plant Targets Automotive Exterior Panels

The new facility at Gwangyang Works in South Korea will focus on hot-dip galvanized steel sheets designed for automotive exterior panels. POSCO is strengthening its production system for wide-format automotive steel sheets used on the exterior panels of midsize and large SUVs and recreational vehicles (RVs). The project therefore expands production capacity around a specific automotive application while supporting demand for larger-format steel sheets required by these vehicle segments. The plant is scheduled to reach completion in 2028, following the approximately KRW 480 billion investment announced for the project.

Electric Arc Furnace Connection Supports Lower-Carbon Steel

The new plant will be linked with a new electric arc furnace and serve as a major production base for carbon-reduced automotive steel sheets. It will introduce ultra-high-temperature heat treatment equipment designed specifically for electric arc furnace steel sheets. This equipment is intended to help the facility meet global automakers’ demand for low-carbon steel products. The connection between the galvanized sheet plant and the new electric arc furnace is therefore a central part of the production system, combining the new steelmaking route with specialized downstream processing for automotive applications.

Production Capacity Will Reach 4.95 Million Metric Tons

The 450,000-metric-ton annual capacity of the new facility will raise POSCO’s total hot-dip galvanized steel sheet production capacity to 4.95 million metric tons. The additional capacity is specifically tied to automotive exterior-panel applications, including wide-format sheets for midsize and large SUVs and RVs. The investment also gives the company additional production capability for carbon-reduced automotive steel sheets connected to electric arc furnace output. These capacity and equipment additions are designed around the requirements of automotive customers seeking galvanized steel products with lower carbon characteristics.

Key Specifications of POSCO’s New Gwangyang Facility

The project combines a defined investment amount, annual production target, completion schedule, and specialized automotive manufacturing scope. Its planned configuration connects the hot-dip galvanized steel sheet facility with a new electric arc furnace and adds ultra-high-temperature heat treatment equipment specifically designed for electric arc furnace steel sheets. The following figures summarize the principal details stated for the project and show how the new facility will affect POSCO’s overall hot-dip galvanized steel sheet production capacity.

Project Investment, Capacity and Completion Details

The core project parameters center on automotive steel production, expanded galvanized sheet capacity, and the integration of electric arc furnace steelmaking. The facility is planned for POSCO’s Gwangyang Works in South Jeolla Province, with operations focused on automotive exterior panels and wide-format sheets for midsize and large SUVs and RVs. The investment is approximately KRW 480 billion, while annual output is planned at 450,000 metric tons. Following the addition, total hot-dip galvanized steel sheet capacity is expected to reach 4.95 million metric tons.

Industry Impact & Outlook

The project could strengthen South Korea’s role in supplying automotive steel while giving global automakers additional access to galvanized sheets designed for exterior-panel applications and lower-carbon production requirements. Its integration with a new electric arc furnace is particularly relevant as automakers seek carbon-reduced steel products, while the added wide-format capability addresses midsize and large SUVs and RVs. For automotive steel customers, the main significance will be the combination of increased capacity, specialized processing equipment, and a production base focused on evolving material requirements. The next major milestone is the planned completion of the facility in 2028.

Frequently Asked Questions

What is POSCO’s new Gwangyang plant designed to produce?
POSCO’s new Gwangyang plant is designed to produce hot-dip galvanized steel sheets primarily for automotive exterior panels and wide-format vehicle applications. The facility is scheduled for completion in 2028 and will have an annual production capacity of 450,000 metric tons. It will be connected with a new electric arc furnace and use ultra-high-temperature heat treatment equipment specifically designed for electric arc furnace steel sheets. The project is intended to support demand from global automakers for low-carbon steel products while expanding POSCO’s total hot-dip galvanized steel sheet production capacity to 4.95 million metric tons.