Too many titanium grades making your head spin? TA, TC, TB – what do they actually mean?

Here is a simple way to remember:

• TA series = α-type → Corrosion resistance specialist

• TC series = α+β-type → High strength specialist

Below are six of the most common titanium grades, each with distinct characteristics and typical applications.

TA2 – Best Cost-Performance

Type: Commercially pure titanium (α-type)

Key features: Good corrosion resistance, excellent formability, economical

Typical applications: Chemical plants, seawater desalination, marine engineering structures

TC4 – Market Leader (≈80% Market Share)

Type: α+β titanium alloy

Key features: High strength, good toughness, excellent biocompatibility

Typical applications: Aircraft structures, engine components, artificial joints, medical implants

TA9 – Unbeatable Crevice Corrosion Resistance

Type: α-type (palladium-added)

Key features: Outstanding resistance to crevice corrosion in aggressive environments

Typical applications: Heat exchangers, chemical reactors, offshore equipment in harsh media

TA10 – Cost-Effective Corrosion Fighter

Type: α-type (molybdenum + nickel)

Key features: Better corrosion resistance than pure titanium, good value

Typical applications: Seawater piping systems, valves, pumps – the hidden champion of marine engineering

TC11 – High-Temperature Performer (Up to 500°C)

Type: α+β titanium alloy

Key features: Excellent high-temperature strength and thermal stability

Typical applications: Aeroengine high-pressure compressor disks and blades, missile structures

TA15 – Weldable High-Temperature Alloy

Type: Near-α titanium alloy

Key features: High aluminum equivalent, good high-temperature strength, excellent weldability

Typical applications: Large aircraft load-bearing structures, special aerospace welded components

How to Choose the Right Titanium Grade?

Best cost-performance for corrosion resistance → TA2 or TA10

Severe crevice corrosion / high-temperature acidic media → TA9

High strength + versatility (aviation, medical, industrial) → TC4

Long-term service at ~500°C → TC11

High-temperature performance with excellent weldability → TA15

For help selecting the right titanium grade for your application, contact our technical team. We are happy to advise.