Ti-6Al-4V ELI (Grade 23) vs Titanium Grade 2 (CP): 79% composition overlap. Some similarities but notable differences in alloying elements.
Ti-6Al-4V ELI (Grade 23) vs Titanium Grade 2 (CP)
Side-by-side chemical composition and mechanical property comparison.
Overview
Ti-6Al-4V ELI (Grade 23)
R56401
Extra Low Interstitial version of Ti-6Al-4V (Grade 5) — the gold standard for surgical implants. Reduced O (≤0.13%), Fe (≤0.25%), and C (≤0.08%) versus Grade 5 enhance ductility, fracture toughness, and fatigue strength with some strength reduction. Biocompatible (ASTM F136), MRI-compatible, and spontaneously passivating. Used for orthopedic implants (hip/knee replacements, spinal fixation), dental implants, bone plates/screws, aerospace structural components requiring high damage tolerance, and cryogenic vessels down to -320°C. W.Nr. 3.7165.
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-4V ELI (Grade 23) | Titanium Grade 2 (CP) | |
|---|---|---|
| Material Number | R56401 | 3.7035 |
| Category | Titanium | Titanium |
| Standard | ASTM F136 | ASTM B265 |
Chemical composition (wt%)
| Element | Ti-6Al-4V ELI (Grade 23) | Titanium Grade 2 (CP) | Overlap |
|---|---|---|---|
| C | ≤ 0.08% | 0–0.08% | OK |
| V | 3.5–4.5% | — | — |
| Al | 5.5–6.5% | — | — |
| Ti | — | — | — |
Mechanical properties
| Property | Ti-6Al-4V ELI (Grade 23) | Titanium Grade 2 (CP) | Unit |
|---|---|---|---|
| tensile_strength | ≥ 860 | ≥ 345 | MPa |
| yield_strength | ≥ 795 | ≥ 275 | MPa |
| elongation | ≥ 10 | ≥ 20 | % |
Compatibility Assessment
Ti-6Al-4V ELI (Grade 23) and Titanium Grade 2 (CP) share some characteristics (79% 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-4V ELI (Grade 23) the same as Titanium Grade 2 (CP)?
Ti-6Al-4V ELI (Grade 23) and Titanium Grade 2 (CP) have a 79% composition overlap. For most purposes, they can be considered similar.
Can I replace Ti-6Al-4V ELI (Grade 23) with Titanium Grade 2 (CP)?
In many cases, yes. The compositions overlap significantly (79%). However, always verify mechanical property requirements and heat treatment compatibility for your specific application.
What is the difference between Ti-6Al-4V ELI (Grade 23) and Titanium Grade 2 (CP)?
The main differences are in the following elements: overall alloying content. Ti-6Al-4V ELI (Grade 23) 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.