Grades of Titanium (Grade 1 to Grade 12) – Properties, Uses & Complete Guide (2025 Edition)

Titanium is one of the most extraordinary engineering metals in the world. It offers a rare combination of:

High strength
Low density (lightweight)
Exceptional corrosion resistance
Biocompatibility
High-temperature performance
Non-magnetic with excellent fatigue strength

Because of these advantages, titanium is used in:

Aerospace
Chemical processing
Marine & desalination
Medical implants
Oil & gas
Heat exchangers
Power plants
Nuclear reactors

Titanium comes in multiple grades, each with different strength, corrosion resistance, and application suitability. This comprehensive guide explains:

Titanium Grades 1–12
Mechanical & chemical properties
Applications of each grade
How to choose the right titanium grade
FAQs
Why Moksh Tubes is a trusted supplier

Titanium Grades Categorization (Quick Overview)

Titanium grades fall into three categories:

Commercially Pure Titanium (Grades 1–4) – Best corrosion resistance, excellent ductility.
Titanium Alloys (Grades 5–12+) – High strength, heat resistance, ideal for aerospace.

Titanium grades vary based on:

Oxygen content
Alloying elements (Al, V, Mo, Sn, Zr, Fe)
Mechanical strength
Corrosion resistance
Weldability

Commercially Pure (CP) Titanium Grades (1 to 4)

Titanium Grade 1 – Softest & Most Corrosion Resistant

Properties:

Softest and most ductile CP titanium
Excellent formability
Highest corrosion resistance

Applications:

Heat exchangers
Chlorine processing systems
Marine equipment
Chemical reactors
Medical devices

Titanium Grade 2 – Most Widely Used CP Titanium

Properties:

Slightly stronger than Grade 1
Excellent corrosion resistance
High weldability

Applications:

Heat exchanger tubes
Desalination plants
Condensers
Seawater piping
Chemical plant equipment

Titanium Grade 3 – High Strength CP Titanium

Properties:

Higher strength than Grade 2
Good corrosion resistance
Moderate formability

Applications:

Heat exchangers
Industrial parts
High-pressure chemical systems

Titanium Grade 4 – Strongest CP Titanium

Properties:

Highest strength among CP grades
Good corrosion resistance
Lower ductility

Applications:

Aerospace components
Medical devices
High-strength heat exchanger parts

Alloyed Titanium Grades (5 to 12)

Titanium Grade 5 (Ti-6Al-4V) – The Most Popular Titanium Alloy

Composition: 6% Aluminum + 4% Vanadium

Properties:

Very high strength
Heat resistant up to 400°C
Excellent fatigue resistance

Applications:

Aerospace components
Turbine blades
Pressure vessels
Medical implants
Sports & racing equipment

Titanium Grade 7 – Most Corrosion-Resistant Alloy

Composition: Titanium + Palladium

Properties:

Best corrosion resistance among titanium grades
Excellent for reducing and oxidizing environments

Applications:

Chlorine service
Chemical plants
Heat exchangers & reactors
Pollution control systems

Titanium Grade 9 (Ti-3Al-2.5V) – Aerospace Tubing Alloy

Properties:

High strength-to-weight ratio
Excellent weldability
Corrosion resistant

Applications:

Aircraft hydraulic tubing
Exhaust systems
Marine & sports equipment

Titanium Grade 11 – Corrosion Alloy (Similar to Grade 7)

Properties:

Superior corrosion resistance
Excellent for harsh chemical environments

Applications:

Heat exchanger tubing
Acid storage tanks
Chemical plant piping

Titanium Grade 12 – Ti-Mo-Ni Alloy

Composition: Titanium + Molybdenum + Nickel

Properties:

High corrosion resistance in hot acids
Higher strength than CP grades
Excellent weldability

Applications:

Hot brine systems
Heat exchangers
Marine environments
Power plant condensers

Mechanical Property Comparison (Grades 1–12)

Grade	Tensile Strength (MPa)	Density	Corrosion Resistance	Strength
1	240	Very Low	⭐⭐⭐⭐⭐	⭐
2	345	Low	⭐⭐⭐⭐⭐	⭐⭐
3	450	Low	⭐⭐⭐⭐	⭐⭐⭐
4	550	Low	⭐⭐⭐⭐	⭐⭐⭐⭐
5	895	Medium	⭐⭐⭐⭐	⭐⭐⭐⭐⭐
7	240–450	Low	⭐⭐⭐⭐⭐	⭐⭐
9	620	Medium	⭐⭐⭐	⭐⭐⭐⭐
11	240	Low	⭐⭐⭐⭐⭐	⭐
12	500	Medium	⭐⭐⭐⭐⭐	⭐⭐⭐⭐

Corrosion Resistance of Titanium Grades

Titanium naturally forms a stable TiO₂ passive film, making it extremely corrosion-resistant. It withstands:

Chlorides
Seawater
Hypochlorites
Wet chlorine gas
Sulfuric acid
Organic acids

Grades 1, 2, 7, 11, and 12 are most commonly used for chemical and marine industries.

Applications of Titanium Across Industries

Aerospace Industry

Jet engine parts
Airframes
Fasteners
Hydraulic tubing

Chemical Processing

Heat exchangers
Reactor vessels
Acid piping
Chlorine equipment

Marine & Desalination

Seawater heat exchangers
Condensers
Saltwater piping

Medical & Healthcare

Implants
Surgical tools
Dental devices

Oil & Gas

Offshore components
Downhole tools
Risers

Power Plants

Condenser tubing
High-purity steam equipment

How to Choose the Right Titanium Grade

Corrosive chemicals: Grade 2, 7, 11, 12
High strength: Grade 5
Heat exchangers: Grade 2, 12
Aerospace: Grade 5, 9
Medical: Grade 5 (ELI)
Seawater: Grade 2, 12
High pressure: Grade 4 or Grade 5

FAQ's

Which titanium grade is strongest?

Titanium Grade 5 (Ti-6Al-4V).

Which grade is best for heat exchangers?

Grade 2 and Grade 12.

Which titanium is most corrosion-resistant?

Grade 7 and Grade 11.

Is titanium expensive?

Yes, but it offers long service life and low maintenance.

Which titanium is used in seawater?

Grade 2 and 12.

Grades of Titanium (Grade 1 to Grade 12) – Properties, Uses & Complete Guide (2025 Edition)