Alfa Laval pioneers recycled titanium for gasketed plate heat exchangers

Heavy industrial sectors—including marine shipping, chemical refining, offshore oil and gas, and nuclear power generation—rely extensively on plate heat exchangers fabricated from pure titanium to handle aggressive, highly corrosive fluids such as seawater, chlorinated compounds, and acidic chemical streams. While titanium delivers unmatched galvanic stability and pitting resistance, primary titanium production remains one of the most energy-intensive and carbon-heavy metallurgical processes in industrial manufacturing. Sourcing raw titanium sponge via the traditional pyrometallurgical Kroll process requires vast electrical power and chemical refining, generating a heavy upstream carbon footprint for every finished heat exchanger. However, introducing recycled titanium into cold-stamping workflows has historically been limited by ductility loss, interstitial element embrittlement, and microstructural inconsistencies that cause cracking during the deep-draw stamping of thin, complex herringbone plate patterns. Mitigating these embodied emissions without sacrificing mechanical formability requires disciplined closed-loop scrap recovery and precision remelting partnerships.

Closed-Loop Metallurgy and Formability Optimization
To address raw-material embodied emissions and accelerate circularity, Alfa Laval produced titanium heat exchanger plates containing 25 percent recycled material at its gasketed plate heat exchanger manufacturing facility in Jiangyin, China. The achievement increases the recycled titanium threshold from a previous baseline of 10 percent up to 25 percent.

Overcoming the mechanical limitations of secondary titanium required Alfa Laval to establish a dedicated closed-loop reclamation loop with an industrial titanium smelting partner. The manufacturing team systematically collected high-purity scrap and trim skeleton waste generated during plate-stamping operations at the Jiangyin plant and routed the feedstock to a primary titanium mill for segregated vacuum remelting. By tightly controlling melting and alloying parameters, the engineering team preserved the mechanical ductility and elongation required to cold-press ultra-thin plates into intricate channel corrugations without tearing or micro-fracturing.

Carina Resare, Head of R&D for the Gasketed Plate Heat Exchangers Business Unit at Alfa Laval, noted that the initiative proves high-quality secondary titanium can meet demanding industrial quality criteria. Resare stated that the project establishes a viable roadmap for reducing carbon emissions directly at the raw material extraction source.

Commercial Validation and Supply Chain Expansion
The initial manufacturing run constitutes a small-scale production batch, with the resulting gasketed plate heat exchangers scheduled for delivery to industrial customers within China for operational service validation.

Madeleine Gilborne, President of the Gasketed Plate Heat Exchangers Business Unit, emphasized that validating recycled titanium in real-world operating environments serves as a strategic commitment to decarbonizing critical process-industry supply chains. Gilborne indicated that broader commercial scaling across global manufacturing hubs will necessitate systemic alignment and expanded secondary titanium recycling networks with upstream material refiners.

Additional Context
This section details technical specifications and competitive benchmarking not included in the original product announcement.

In industrial heat transfer systems governed by standards such as ASME Section VIII Division 1 and ISO 15547 for plate-and-frame heat exchangers, heat transfer plates are predominantly pressed from commercially pure (CP) titanium grades—primarily ASTM B265 Grade 1 or Grade 2. These plates feature sheet thicknesses typically ranging from 0.4 millimeters to 0.6 millimeters and must undergo severe plastic deformation during single-stroke hydraulic pressing to form corrugated chevron patterns that maximize fluid turbulence and heat transfer coefficients. When recycling titanium scrap, interstitial contaminants—particularly oxygen, nitrogen, carbon, and hydrogen—act as severe interstitial solid-solution strengtheners that dramatically reduce tensile elongation. In Grade 1 titanium, oxygen content must remain strictly below 0.18 percent by weight to maintain an elongation capability exceeding 24 percent. Smelting scrap for heat exchanger plates requires advanced Vacuum Arc Remelting (VAR) or Electron Beam Cold Hearth Remelting (EBCHR) to prevent atmospheric gas pickup, ensuring the finished cold-rolled coil meets the surface finish and deep-draw drawability standards required to prevent localized stress thinning along the plate gasket grooves and port holes.

Within the global plate heat exchanger and industrial thermal equipment sector, Alfa Laval benchmarks directly against major thermal equipment manufacturers including Kelvion, Danfoss (including the Sondex plate portfolio), Tranter, and SPX FLOW (APV). While competing thermal manufacturers have developed low-carbon heat exchanger offerings focused primarily on recycled stainless steel (such as 304 or 316L alloys) or recycled aluminum brazed cores, circular metallurgy within commercially pure titanium components has historically lagged due to the specialized melting infrastructure required for reactive metals. By partnering directly with Chinese titanium sponge and coil mills to segregate stamped skeletal scrap into audited remelt batches, Alfa Laval establishes a verifiable chain-of-custody recycling model. This initiative positions the company ahead of tightening European Union Corporate Sustainability Due Diligence rules and international maritime decarbonization standards (such as IMO carbon intensity targets), offering marine scrubber and offshore cooling clients audited Scope 3 emission reductions without altering external exchanger footprints or gasket sealing performance.

Edited by Romila DSilva, Induportals Editor, with AI assistance.