Siemens continuous caster produces world's thickest stainless-steel slabs at Posco

Production capacity 700,000 metric tons per annum / Continuous caster achieves slab thicknesses of up to 300 millimeters

Linz, (PresseBox) - A single-strand continuous stainless-steel slab caster capable to cast the world's thickest stainless steel slabs was brought into operation in July for Pohang Iron and Steel Co. Ltd. (Posco) in Pohang, Korea. Siemens Metals Technologies built the machine in Posco's stainless steel plant SSCP 4. It is designed to produce 700,000 metric tons of austenitic and ferritic steel slabs with thicknesses of up to 300 millimeters per annum. The new continuous casting plant expands Posco's capacity for producing high-quality stainless steels.

The continuous bow-type caster from Siemens is equipped with a straight Smart Mold. It has a machine radius of eleven meters and a metallurgical length of 26.9 meters. Slabs are cast with thicknesses of 250 and 300 millimeters in widths ranging from 800 to 1,650 millimeters. The casting speed can reach 1.1 meters per minute.

Siemens was responsible for the engineering, the supply of key components and technology packages, including the LevCon mold level control, the DynaFlex mold oscillator, and DynaWidth for setting the slab width. The strand is guided by Smart Segments. Thanks to DynaGap Soft Reduction 3D, it is possible to determine the position of the final solidification of the strand with high precision. This enables the roll gap to be controlled precisely and high internal slab quality to be obtained. A combination of the Dynacs 3D cooling module, DynaJet spray cooling and internally cooled I-Star rollers ensures efficient secondary cooling, an important prerequisite for achieving slabs with a high-quality surface. The scope of supplies and services from Siemens also included the complete basic (level 1) and process automation (level 2) of the casting plant as well as advisory services for construction and commissioning.

Further information about solutions for steel works, rolling mills and processing lines can be found at

The Metals Technologies Business Unit (Linz, Austria), part of the Siemens Industry Sector, is one of the world's leading life-cycle partners for the metals industry. The Business Unit offers a comprehensive technology, modernization, product and service portfolio as well as integrated automation and environmental solutions covering the entire life cycle of plants. For more information, visit

Siemens AG Industry Sector / Industry Automation Division

The Siemens Industry Sector (Erlangen, Germany) is the world's leading supplier of innovative and environmentally friendly products and solutions for industrial customers. With end-to-end automation technology and industrial software, solid vertical-market expertise, and technology-based services, the Sector enhances its customers' productivity, efficiency, and flexibility. With a global workforce of more than 100,000 employees, the Industry Sector comprises the Divisions Industry Automation, Drive Technologies and Customer Services as well as the Business Unit Metals Technologies. For more information, visit

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