Norsk Titanium RPD Technology Targets US Submarine Applications

Norsk Titanium

Norsk Titanium RPD technology is moving deeper into US defense applications after the company secured a $4.2mn contract to develop rapid plasma deposition for maritime and submarine use.

Norsk Titanium RPD technology will be developed over an 18-month period under the Defense Industrial Base Expansion, Development, and Growth Enterprise initiative. The work will focus on qualifying additive-manufactured products for highly critical naval applications.

Norsk Titanium RPD technology is already established around titanium alloys, but the new programme will also expand the process into nickel-based alloys. That broadens the potential market from corrosion-resistant structural components into higher-temperature and more demanding applications.

The programme is strategically important because submarine supply chains require highly qualified materials, long service lives and strict control over metallurgy and manufacturing consistency.

Titanium Additive Manufacturing Fits Maritime Corrosion Requirements

Titanium is especially valuable in marine environments because of its strong corrosion resistance in seawater.

Commercially pure titanium and alloys such as Grade 5 and Grade 7 can provide long-term durability where conventional steels would require greater corrosion protection or maintenance.

This makes titanium attractive for submarine and maritime components exposed to saltwater, pressure and difficult operating conditions.

Additive manufacturing can add another advantage. Near-net-shape production can reduce the amount of expensive titanium that must be machined away from forged or wrought stock.

That can improve material utilisation and shorten lead times for complex components, particularly where conventional manufacturing requires large forgings or extensive machining.

For defense programmes, reducing dependence on long-lead forgings can be strategically valuable. Qualified additive processes could provide an alternative route for components where supply capacity is constrained.

However, qualification remains the critical barrier. Submarine components operate in safety-critical environments, so mechanical properties, fatigue behaviour, defect control and repeatability must be demonstrated before widespread adoption.

Nickel Alloys Could Expand RPD Beyond Structural Titanium

The move into nickel-based alloys could significantly broaden Norsk Titanium's addressable market.

Nickel superalloys are widely used where components must retain strength, corrosion resistance and thermal stability under demanding conditions.

For naval applications, this could create opportunities in propulsion, high-temperature systems and specialised mechanical components alongside titanium structures.

The combination of titanium and nickel alloy capability would also strengthen Norsk Titanium's position as a broader defense manufacturing supplier rather than a single-material additive producer.

The US defense industrial base is increasingly focused on manufacturing resilience, particularly for components dependent on limited forging, casting or machining capacity.

RPD technology could support that objective if it can reduce lead times while meeting military qualification standards.

The longer-term significance therefore lies in process substitution. Norsk is not simply selling additive manufacturing equipment; it is trying to qualify a new production route for materials and components traditionally supplied through conventional metallurgical processes.

The Metalnomist Commentary

Norsk Titanium's submarine programme shows that additive manufacturing is moving into increasingly critical defense applications. If RPD qualifies successfully in both titanium and nickel alloys, the technology could reduce dependence on long-lead forgings and expand flexibility across the naval supply chain.