Mechanical Forgings Market: PLC Automation Drives 5.2% CAGR to 2035

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Published on July 23, 2026, the IndexBox report anchors its baseline scenario in three converging forces: steady global industrial production growth, surging automation capital expenditure, and relentless investment in semiconductor fabrication capacity. By 2035, the market is expected to reach an index value of 165 relative to the 2025 baseline, signaling a structural shift rather than a cyclical uptick.

The 5.2% CAGR represents a conservative baseline. Upside scenarios tied to accelerated Industry 4.0 adoption , particularly in Southeast Asia and India , could push the index beyond 175 by 2035. PLC-intensive sectors such as automotive assembly, packaging machinery, and material handling are expected to account for over 40% of incremental forging demand.

The link between mechanical equipment forgings and PLC automation is structural and direct. Every automated production cell relies on precision-machined, forged structural parts , housings, brackets, shafts, and gear blanks , that must withstand continuous duty cycles. As factories retrofit legacy lines with PLC-controlled servo systems and IoT-enabled actuators, the specification requirements for forgings tighten, driving value growth even in mature volume segments.

Forgings are preferred over castings in high-stress automation applications because their grain structure delivers superior fatigue resistance. A robotic welding arm running 24/7 under PLC sequencing demands components that will not fail under repetitive loading , and that engineering reality translates into steady replacement and upgrade demand across the installed base of automated equipment.

The IndexBox analysis identifies automation capex as the fastest-growing demand driver within the forgings market. Manufacturing enterprises in developed economies are allocating between 15% and 25% of their annual capital budgets to automation retrofits, much of it centered on PLC hardware upgrades, HMI modernization, and SCADA integration , all of which require physical mounting, enclosure, and actuation components sourced from forging supply chains.

Semiconductor fabrication is forging-intensive in ways the broader market often overlooks. Wafer-handling robots, chemical-mechanical planarization (CMP) systems, and vacuum chamber assemblies all depend on high-purity forged components that can operate in chemically aggressive, thermally extreme environments. The global semiconductor capex cycle , now running at over $180 billion annually , is a distinct and growing addressable market for specialty forging suppliers.

Furthermore, semiconductor growth feeds the PLC ecosystem directly. Every new fab requires thousands of PLC nodes for process control, environmental monitoring, and material handling. This cascading demand pulls forgings through multiple tiers of the industrial supply chain , from the structural frames of CNC machines that produce PLC enclosures to the forged tooling used in connector and terminal block manufacturing.