Industry officials said Feb. 18 that Korean steelmakers could strengthen a two-track strategy: adopting humanoid robots in their own plants as users while also supplying robot-grade materials. While artificial intelligence makes robots smarter, specialty steel is what enables them to handle heavy work in industrial settings.
High-strength, high-durability specialty steel is used in critical reducer parts that power robot joints, including internal gears and splines. Steel is also applied to load-bearing sections of robot frames, often combined with aluminum alloys to reduce weight. Ultra-high-strength steel sheet developed for automobiles and non-oriented electrical steel sheet used in drive motors are also closely tied to energy efficiency, supporting expectations of rising demand.
Korean steelmakers already say they have the capability to produce materials for humanoid robots. SeAH Besteel has said it developed steel for robot reducers in 2021. POSCO produces its ultra-high-strength steel sheet Giga Steel for robot applications and its high-efficiency non-oriented electrical steel sheet Hyper NO. Hyundai Steel is also seen as able to supply materials for precision machinery and drive components through its high-cleanliness specialty steel production system.
Steelmakers are also accelerating efforts to bring humanoid robots into worksites to help replace labor. POSCO signed a memorandum of understanding with U.S. humanoid startup Persona AI to apply industrial humanoid robots in the field. In unloading finished rolled coils that can weigh tens of tons, cranes are required; the plan is for humanoid robots to work with on-site workers to fasten crane belts to the coils. Hyundai Steel has introduced a tagging robot at its Dangjin specialty steel plant to automate shipping processes as it moves faster on smart-factory implementation.
“While the market is still in its early stages, the expansion of the robot industry could lead to increased demand for high value-added specialty steel and electrical steel sheets,” an industry official said. “The amount of specialty steel used in humanoid robots is not large, but we are preparing mid- to long-term strategies as the market grows.”
* This article has been translated by AI.
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