Titanium’s exceptional properties make it essential for aerospace, medical, and high-performance applications. But those same properties that make titanium valuable also make it challenging to clean properly.
When improperly cleaning titanium, manufacturers often struggle with coating adhesion problems, stress corrosion cracking, and rejected parts. Use the wrong chemistry or process, and you risk hydrogen embrittlement, contamination, or adhesion failures that can compromise part performance.
Titanium presents a distinct set of challenges that set it apart from other metals. While it shares some similarities with stainless steel or aluminum, the cleaning approach must account for several critical factors that are unique to titanium and its alloys.
Titanium instantly forms a protective oxide film when exposed to air. This layer provides corrosion resistance, but oils, machining fluids, and handling residues can adhere to or become embedded in the oxide layer, compromising surface treatments.
If these contaminants aren’t removed, they’ll prevent proper bonding of coatings and adhesives.
Effective cleaning must remove both the visible soils and any contaminants harbored by the oxide layer without damaging the titanium substrate.
Use cleaners like AquaVantage® 815 GD for immersion and ultrasonic systems or AquaVantage® 1990 GD for spray wash processes that penetrate and remove soils without damaging the oxide layer. Elevated temperatures (140-180°F) improve effectiveness by reducing oil viscosity.
Titanium absorbs hydrogen during cleaning, especially with acidic solutions. This hydrogen can migrate into the metal structure, causing brittleness and cracking under stress. This scenario is known as a critical failure.
Hydrogen embrittlement risks are particularly acute when using acidic cleaners without proper controls.
The practical reality is that your chemistry selection and process parameters must be carefully managed. Exposure time, temperature, pH level, and the presence of inhibitors all play crucial roles in preventing hydrogen pickup during the cleaning operation.
Minimize acid exposure and always use properly inhibited formulations with strict time and temperature controls. For routine cleaning, stick with inhibited alkaline cleaners that are compatible with titanium and titanium alloys like AquaVantage® 815 GD or AquaVantage® 1990 GD.
Even when your cleaning chemistry is compatible with all metals, processing titanium in the same aqueous solution, alongside like aluminum or zinc, both of which are highly anodic alloys, creates galvanic corrosion risks.
The metals don’t even need to make direct contact with each other. If the bath allows electrical connectivity or ion migration between dissimilar metals, the presence of metals with different electrochemical potentials in the same bath is enough to cause problems.
Ideally, separate titanium from highly anodic alloys during cleaning. If that’s not feasible, isolate or ground parts and the tank to reduce galvanic potential. Select plastic or other non-conductive baskets or racks to minimize contact. Choose an inhibited, multi-metal cleaner like AquaVantage® 815 GD or AquaVantage® 1990 GD and validate performance and material compatibility before full-scale implementation.
Selecting the appropriate cleaning solution for your titanium parts depends on the specific soils you’re removing, the cleaning processes the parts will undergo, and the other materials in your production environment.
Alkaline cleaning solutions are the most common choice for titanium cleaning across aerospace, medical, and industrial applications. These formulations excel at removing the oils, greases, and organic contaminants that accumulate during machining and handling operations.
Strong alkaline detergents, like AquaVantage® 815 QR-NF and Alkaline Deruster HD, operate in the 12-14 pH range and deliver aggressive cleaning action against heavy greases, thick cutting fluids, carbon deposits, and printing inks.
These higher-pH cleaners safely process titanium while providing the muscle needed for heavily soiled parts. They’re typically used at elevated temperatures, often 140-180°F, where heat reduces oil viscosity and accelerates chemical reactions, dramatically improving cleaning efficiency.
Mild alkaline detergents, like AquaVantage® 815 GD and AquaVantage® 1990 GD, operate in the 9-11 pH range and are the preferred choice for many titanium cleaning operations.
They effectively remove machining oils, water-soluble coolants, particulates, and light oxide discoloration while presenting minimal risk to the metal substrate. This pH range provides an excellent balance between cleaning power and material safety, making these formulations ideal for mixed-metal washing systems without the hydrogen pickup risks associated with more aggressive chemistries.
Always use appropriate PPE including chemical-resistant gloves and eye protection when handling concentrated alkaline solutions.
When maximum material safety is paramount, such as cleaning delicate medical devices, precision aerospace components, or mixed-material assemblies containing sensitive elastomers or plastics, neutral pH detergents operating at 7-9 pH provide the safest approach.
These cleaners, like AquaVantage® 1696 GD, effectively remove light soils, dust, fingerprints, and water-soluble contaminants without any risk of chemical attack on titanium or co-processed materials.
Acidic cleaners, operating in the 1-6 pH range, are not intended for routine cleaning but rather for specific applications where oxide scale, heat treat discoloration, or mineral deposits must be removed. The hydrogen embrittlement risk makes acidic cleaning the most sensitive operation in titanium processing. These processes must follow well-defined procedures established by AMS and ASTM specifications, with rigorous control of exposure time, temperature, acid concentration, and inhibitor additives.
Never use acidic cleaners on titanium without proper technical guidance and established process parameters. When properly executed, however, acid treatments can restore titanium surfaces to a clean, oxide-free condition ideal for welding, bonding, or coating operations.
Acidic solutions require specialized PPE and ventilation. Follow all SDS requirements and your facility’s chemical handling procedures.
For titanium parts contaminated with thick greases, protective waxes, or heavy hydrocarbon residues that resist conventional aqueous cleaning, semi-aqueous formulations provide an effective solution.
Products like Nature-Sol Emulsion create stable emulsions that combine the solvency power needed to dissolve heavy organic soils with the safety and ease of use of water-based systems.
Semi-aqueous cleaners are particularly valuable as a pre-cleaning step before aqueous washing in multi-stage systems. They remove the bulk of heavy hydrocarbon contamination, allowing subsequent aqueous stages to focus on water-soluble soils and final precision cleaning.
This approach often proves more efficient and cost-effective than attempting to remove all soil types in a single cleaning stage.
Even with the right cleaning chemistry, certain practices can compromise the quality of titanium parts or create safety risks. Being aware of these common pitfalls helps ensure consistent cleaning results and protects your valuable titanium components.
Titanium cleaning isn’t one-size-fits-all. Your specific parts, soils, and downstream processes require tailored solutions.
Our technical team has decades of experience developing cleaning protocols for aerospace, medical, and industrial titanium applications.
Whether you’re establishing a new titanium cleaning process or troubleshooting an existing operation, we’re here to help. Contact Brulin today to discuss your titanium cleaning challenges and discover how our specialized formulations can improve your cleaning results, reduce process time, and ensure consistent part quality.
Contributors: Patrick Johnson (Director of Research & Development), Chris Jones (Global Business Development Manager), & Brandon Mikesell (Quality & Tech Support Chemist)
Originally Published: November 14, 2025