Metalysis is preparing to increase production of high-value critical metal and alloy powders from its South Yorkshire operation, with capacity for niobium alloy C-103 targeted at 15 tonnes a year from the start of 2027. The company says it can now produce C-103 to customer specifications for demanding aerospace, space, defence, and high-temperature applications, adding another refractory material to a portfolio that already includes aluminium-scandium production and work on tantalum-based alloys.
C-103 sits at the specialised end of the metals market. Its annual volumes are small beside commodity steel or aluminium, but the niobium-hafnium-titanium alloy combines high-temperature strength with comparatively low density for a refractory material, making it useful for propulsion and other components exposed to severe thermal loading. A limited qualified supplier base can consequently turn a relatively modest quantity of material into a significant manufacturing constraint.
Metalysis is scaling production around the FFC Cambridge electrolysis process, originally developed at the University of Cambridge. Instead of melting and repeatedly processing elemental metals to form an alloy, the process reduces metal oxides in molten calcium chloride to produce a solid metallic sponge, which can then be crushed, milled, dried, and processed into powder with the characteristics required by downstream manufacturers.
The company’s production architecture is deliberately modular. Smaller Gen 1 and Gen 2 systems are used for research and process development, while Gen 3 and Gen 4 equipment is intended to move successful chemistries towards commercial output. That progression allows customers to qualify a material and establish its behaviour in processes such as additive manufacturing before substantially larger volumes are committed.
Qualification is often the slower part of introducing a new advanced material. Aerospace and defence manufacturers need consistent chemistry, particle distribution, morphology, consolidation behaviour, and component performance across repeated batches, particularly where finished parts are expected to operate under high thermal or mechanical loads. Metalysis has expanded its research capability alongside downstream powder-processing equipment so material can move through progressively larger reactor formats without changing the underlying reduction route.
The company remains small by conventional metals-industry standards, producing roughly one tonne of powder during the past year against existing capacity of around 12 to 25 tonnes annually depending on the density and product mix involved. Its next larger Gen 4 installation would provide capacity measured in tens of tonnes per year, and chief executive Nitesh Shah has indicated that commissioning such a unit would require investment of about £10 million.
Metalysis is seeking further capital as production expands, with its workforce of around 50 people also expected to increase. The proposed C-103 line is one element of that growth rather than a standalone project. Commercial production of high-scandium-loading aluminium-scandium powder began in late 2025, while other programmes include refractory materials for rocket-engine applications and European Space Agency-backed development of a more continuous titanium-production process.
The industrial position Metalysis is targeting lies between mineral extraction and finished component manufacture. Critical-minerals strategies frequently concentrate on new mines or the eventual manufacture of batteries, turbines, semiconductors, and defence systems, but raw oxides are of little use to those industries until they have been converted into qualified metals, alloys, powders, or chemical precursors. Processing capacity can therefore be as strategically constrained as the original mineral resource.
Feedstock dependence does not disappear simply because more processing is carried out in Britain. Specialist ores and oxides remain exposed to international prices, export controls, transport disruption, and concentration of upstream production. The commercial test for Metalysis is whether its process can maintain chemistry, morphology, yield, and delivery performance across repeated production batches at costs customers will accept.
The planned C-103 capacity provides a useful measure of that transition. Fifteen tonnes annually is negligible beside mainstream metals output, but it is significant for an alloy used in expensive components with long qualification cycles and restricted supply. If production reaches the target from 2027, the Rotherham operation will occupy a larger position in a comparatively small but strategically sensitive section of the advanced-manufacturing supply chain.
