Ti-6Al-7Nb vs Titanium Grade 2 (CP): 81% composition overlap. Some similarities but notable differences in alloying elements.
Ti-6Al-7Nb vs Titanium Grade 2 (CP)
Side-by-side chemical composition and mechanical property comparison.
Overview
Ti-6Al-7Nb
Alpha-beta titanium alloy with Nb replacing V — developed specifically to eliminate vanadium cytotoxicity concerns. Similar mechanical properties to Ti-6Al-4V but with superior biocompatibility and corrosion resistance in body fluids. ISO 5832-11 / ASTM F1295 for surgical implants. Trade name: IMI 367 (originally). Used for hip prostheses, knee replacements, fracture fixation plates, spinal devices, screws, and dental implants.
Titanium Grade 2 (CP)
3.7035
The workhorse commercially pure titanium grade. Best balance of strength, ductility, and corrosion resistance among CP grades. Excellent resistance to seawater, chlorides, and oxidizing acids. Used for heat exchangers, chemical processing, marine hardware, desalination, and medical implants.
| Ti-6Al-7Nb | Titanium Grade 2 (CP) | |
|---|---|---|
| Material Number | — | 3.7035 |
| Category | Titanium | Titanium |
| Standard | ISO 5832-11 | ASTM B265 |
Chemical composition (wt%)
| Element | Ti-6Al-7Nb | Titanium Grade 2 (CP) | Overlap |
|---|---|---|---|
| C | 0–0.08% | 0–0.08% | OK |
| Al | 5.5–6.5% | — | — |
| Ti | — | — | — |
| Nb | 6.5–7.5% | — | — |
Mechanical properties
| Property | Ti-6Al-7Nb | Titanium Grade 2 (CP) | Unit |
|---|---|---|---|
| tensile_strength | 900–1050 | ≥ 345 | MPa |
| yield_strength | 800–950 | ≥ 275 | MPa |
| elongation | 8–15 | ≥ 20 | % |
Compatibility Assessment
Ti-6Al-7Nb and Titanium Grade 2 (CP) share some characteristics (81% overlap) but have notable differences. They may be substitutable in some applications but not all. Verify suitability carefully.
Automated assessment based on composition analysis
Frequently Asked Questions
Is Ti-6Al-7Nb the same as Titanium Grade 2 (CP)?
Ti-6Al-7Nb and Titanium Grade 2 (CP) have a 81% composition overlap. For most purposes, they can be considered similar.
Can I replace Ti-6Al-7Nb with Titanium Grade 2 (CP)?
In many cases, yes. The compositions overlap significantly (81%). However, always verify mechanical property requirements and heat treatment compatibility for your specific application.
What is the difference between Ti-6Al-7Nb and Titanium Grade 2 (CP)?
The main differences are in the following elements: overall alloying content. Ti-6Al-7Nb is a Titanium grade, while Titanium Grade 2 (CP) is a Titanium grade.
Related Comparisons
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Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.