Grade 2 vs Grade 5 Titanium
Dec 10, 2025
What Is Grade 2 Titanium?
Grade 2 titanium is a commercially pure titanium (CP Ti), offering an excellent balance of corrosion resistance, formability, and moderate strength. It's widely used in marine, medical, and chemical processing applications.
Composition: ~99.2% titanium
Tensile Strength: ~344 MPa
Yield Strength: ~275 MPa
Corrosion Resistance: Excellent
Use Cases: Heat exchangers, pressure vessels, piping systems, medical containers
What Is Grade 5 Titanium (Ti-6Al-4V)?
Grade 5 titanium, or Ti-6Al-4V, is an alpha-beta titanium alloy that includes 6% aluminum and 4% vanadium. It's known for its high strength, heat resistance, and excellent strength-to-weight ratio.
Tensile Strength: ~950 MPa
Yield Strength: ~880 MPa
Corrosion Resistance: Very good
Use Cases: Aerospace components, high-performance machinery, bike frames, implants
Comparison Grade 2 and Grade 5 Titanium
| Property | Grade 2 | Grade 5 (Ti-6Al-4V) |
|---|---|---|
| Machinability | Easier to machine | More tool wear, slower cuts |
| Strength | Moderate (~344 MPa) | Very High (~950 MPa) |
| Hardness | Low (Rockwell B70–80) | High (Rockwell C35–40) |
| Weight | ~4.51 g/cm³ | ~4.43–4.51 g/cm³ |
| Price (USD/kg) | $15–$25 | $30–$60 |
| Overall Cost | Lower total cost | Higher material & machining cost |
Grade 2 is best for non-load-bearing applications where corrosion resistance and formability are key.
Grade 5 shines in structural and high-performance applications where strength and fatigue resistance matter most.
Grade 1 vs Grade 5 Titanium
Grade 1 is the softest and most ductile of all titanium grades. While its corrosion resistance is excellent (even slightly better than Grade 2), its strength is the lowest.
| Property | Grade 1 | Grade 5 |
|---|---|---|
| Tensile Strength | ~240 MPa | ~950 MPa |
| Corrosion Resistance | Excellent | Very Good |
| Formability | Excellent | Low |
| Machinability | Excellent | Moderate to Poor |
| Typical Uses | Medical, marine tanks | Aerospace, motorsport |
Summary:
Choose Grade 1 for maximum corrosion resistance and easy fabrication.
Choose Grade 5 when mechanical performance is critical.
Grade 2 vs Grade 4 Titanium
Grade 4 is the strongest of the commercially pure (CP) titanium grades. It maintains similar corrosion resistance to Grade 2, but with improved mechanical strength.
| Property | Grade 2 | Grade 4 |
|---|---|---|
| Tensile Strength | ~344 MPa | ~550 MPa |
| Yield Strength | ~275 MPa | ~483 MPa |
| Corrosion Resistance | Excellent | Excellent |
| Machinability | Good | Moderate |
| Typical Uses | Heat exchangers, implants | Surgical tools, pressure vessels |
Summary:
Choose Grade 2 for easier machining and forming.
Choose Grade 4 for high-stress applications needing more strength but not full alloyed-grade performance.
Difference of Titanium Grades
| Feature | Grade 1 | Grade 2 | Grade 4 | Grade 5 (Ti-6Al-4V) |
|---|---|---|---|---|
| Strength | Low | Moderate | High | Very High |
| Hardness | Very Low | Low | Moderate | High |
| Corrosion Resistance | Excellent | Excellent | Excellent | Very Good |
| Machinability | Excellent | Good | Moderate | Poor |
| Formability | Excellent | Excellent | Moderate | Low |
| Price | Low | Moderate | Higher | High |
| Typical Use Cases | Marine, Chemical | Medical, Tubing | Surgical, Stress Parts | Aerospace, Motorsports |
How to Choose the Right Titanium Grade?
Choose Grade 1 for the best corrosion resistance and easiest forming, where strength isn't critical.
Choose Grade 2 for general use: a solid balance between formability, corrosion resistance, and cost.
Choose Grade 4 when you need strength but want to stick with commercially pure titanium.
Choose Grade 5 for top-tier strength, fatigue resistance, and performance - even at higher cost.
By understanding these differences, you can make faster, smarter choices that balance performance, processing, and cost.
why choose us
We provide a comprehensive range of titanium materials and fabricated parts, including:
Titanium Tubes & Pipe: Seamless and welded tubing in commercial and aerospace grades (Gr1, Gr2, Gr5, Gr7, Gr9, Gr12), suitable for heat exchangers, condenser tubes, and piping systems.
Titanium Bars & Rods: Round bars, hex bars, and square bars in hot-rolled, forged, and cold-drawn conditions, available in various diameters and lengths.
Titanium Plate & Sheet: Plates, sheets, and strips in standard and custom dimensions, ideal for pressure vessels, chemical processing, and marine applications.
Titanium Wire & Foil: Fine wire for welding, fasteners, and medical applications, alongside ultra-thin foil for specialized industrial uses.
Precision Titanium CNC Machining Parts: Custom-engineered components, fittings, flanges, fasteners, and intricate parts machined from titanium billets, bars, or plates with tight tolerances.
For quotes, technical specifications, or to discuss your project requirements for titanium tubes, bars, plates, sheets, wire, foil, or custom CNC machined components, please contact our team.
Email us at: info@gneemetal.com
