Titanium - Ultimate Performance at the Service of Industry
Titanium is one of the most fascinating and highest-performing materials available for demanding industrial applications. Its density of 4.51 g/cm3, approximately 60% less than steel, combined with mechanical strength comparable to certain alloy steels, produces a strength-to-weight ratio that exceeds almost all other structural materials. Added to this is near-total corrosion resistance in most industrial environments, exceptional biocompatibility and remarkable high-temperature stability.
Titanium grades and their applications
Titanium exists in several grades, from commercially pure titanium (grades 1 to 4) to titanium alloys (including the famous Ti-6Al-4V, grade 5). Commercially pure grades offer excellent corrosion resistance and good formability, but moderate mechanical strength. They are preferred for chemical equipment, heat exchangers, marine equipment and medical applications requiring maximum biocompatibility.
Ti-6Al-4V (grade 5), with its aluminum (6%) and vanadium (4%) content, is the most widely used titanium alloy. Its tensile strength (900 MPa minimum) is comparable to high-strength steels, at half the weight. It is the reference material for aeronautical components, orthopedic implants, high-performance sports equipment and defense applications.
Corrosion resistance: the metallic fortress
Titanium’s corrosion resistance in acidic environments, including hydrochloric acid, sulfuric acid, nitric acid and many organic acids, exceeds that of all other common metals, including the highest-performing stainless steels. This exceptional resistance is due to the spontaneous formation of an extremely stable and adherent titanium oxide (TiO2) layer that reforms instantly if mechanically damaged.
In seawater, titanium resists indefinitely without additional protection, making it the ideal material for long-duration subsea applications, seawater heat exchangers and desalination components. Unlike stainless steels that may be vulnerable to pitting corrosion in stagnant seawater, titanium is virtually immune to this type of degradation.
Applications in the chemical industry
The chemical industry is one of the most important users of titanium for its process equipment. Titanium heat exchangers are widespread in hydrochloric acid production plants, purified sulfuric acid, chlorine and many other corrosive chemical products. The virtually unlimited lifespan of this equipment in environments where stainless steel would last only a few years largely justifies titanium’s higher initial cost.
Titanium distillation columns, reactors, agitators and piping systems are used in processes involving strong oxidizing acids, concentrated chloride solutions at high temperature and other particularly aggressive media. ADI Laval fabricates process components in titanium for chemical industry clients who have identified corrosion as their primary equipment durability constraint.
Medical sector and implants
Titanium’s biocompatibility, combined with its corrosion resistance in body fluids and adapted mechanical properties, makes it the reference material for orthopedic implants: hip and knee prostheses, bone screws and plates, spinal cages and dental implants. Its elastic modulus (114 GPa) is closer to that of cortical bone (15-25 GPa) than steel (200 GPa), reducing the stress shielding phenomenon and promoting bone re-growth around the implant.
At ADI Laval, we fabricate medical components and instruments in titanium according to our clients’ specifications, with the level of traceability and documentation required for medical applications. Dimensional precision and surface finish quality are absolute quality criteria for these applications.
Titanium fabrication and welding: essential precautions
Titanium fabrication requires particular precautions that our team knows and rigorously applies. Titanium eagerly absorbs oxygen, nitrogen and hydrogen at elevated temperatures, which can cause metal embrittlement in heated zones during welding. To avoid this problem, titanium welding must be performed under adequate gas shielding, generally with high-purity argon covering not only the weld pool but also adjacent heated zones.
At ADI Laval, we have the equipment and procedures necessary to weld titanium in compliance with the highest quality standards. Our technicians are trained in the specificities of this material and apply documented procedures that guarantee the metallurgical integrity of every weld.
Grade Overview
| Grade | Characteristic |
|---|---|
| Gr. 1-4 (CP) | Commercially pure, excellent corrosion resistance |
| Gr. 5 (Ti-6Al-4V) | High strength alloy, aerospace and medical |
Technical Specifications
Industries & Typical Uses
- Chemical process equipment
- Aerospace components
- Medical implants and instruments
- Marine and subsea
- Heat exchangers
Frequently Asked Questions - Titanium
Is titanium really worth the premium over 316L for my application?
It all depends on your application. If your equipment is exposed to strong acids, hot seawater, concentrated chlorides at high temperature or other media where 316L degrades rapidly, titanium can be economically justified despite its significantly higher initial cost. The total cost of ownership (TCO) calculation, including replacements and maintenance, can often demonstrate that titanium is less expensive in the long run. If your conditions are less aggressive, grades like 316L or 2507 may offer a better performance/cost ratio.
Can ADI Laval fabricate medical-grade titanium parts (ASTM F136)?
Yes, we can fabricate medical-grade titanium parts, including Ti-6Al-4V ELI (Grade 23) conforming to ASTM F136, which is the standard for orthopedic and surgical applications. We provide complete raw material traceability, fabrication process documentation and required inspection reports. For parts intended for clinical use, verification of applicable regulatory requirements (Health Canada, FDA) and fabrication process validation are steps we can support with our ISO 9001 quality system.