Ti-6Al-4V ELI (Grade 23) vs Titanium Grade 1: 65% composition overlap. Moderate differences, generally not direct substitutes.
Ti-6Al-4V ELI (Grade 23) vs Titanium Grade 1
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 1
3.7025
The softest and most ductile commercially pure titanium grade. Lowest O content (0.18% max) for maximum formability. Used for plate heat exchangers, chemical plant vessels, explosive cladding, deep-drawn parts, and anodizing applications. Lower strength than Grade 2 but superior formability.
| Ti-6Al-4V ELI (Grade 23) | Titanium Grade 1 | |
|---|---|---|
| Material Number | R56401 | 3.7025 |
| Category | Titanium | Titanium |
| Standard | ASTM F136 | ASTM B265 |
Chemical composition (wt%)
| Element | Ti-6Al-4V ELI (Grade 23) | Titanium Grade 1 | Overlap |
|---|---|---|---|
| C | ≤ 0.08% | 0–0.08% | OK |
| V | 3.5–4.5% | — | — |
| Al | 5.5–6.5% | — | — |
| Ti | — | ≥ 99% | — |
Mechanical properties
| Property | Ti-6Al-4V ELI (Grade 23) | Titanium Grade 1 | Unit |
|---|---|---|---|
| tensile_strength | ≥ 860 | 240–310 | MPa |
| yield_strength | ≥ 795 | ≥ 170 | MPa |
| elongation | ≥ 10 | ≥ 24 | % |
Compatibility Assessment
Ti-6Al-4V ELI (Grade 23) and Titanium Grade 1 have moderate differences (65% overlap). They are generally not direct substitutes. Consider the specific requirements of your application.
Automated assessment based on composition analysis
Frequently Asked Questions
Is Ti-6Al-4V ELI (Grade 23) the same as Titanium Grade 1?
Ti-6Al-4V ELI (Grade 23) and Titanium Grade 1 have a 65% composition overlap. They are generally not directly interchangeable.
Can I replace Ti-6Al-4V ELI (Grade 23) with Titanium Grade 1?
Generally not recommended. The compositions differ significantly (65% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between Ti-6Al-4V ELI (Grade 23) and Titanium Grade 1?
The main differences are in the following elements: overall alloying content. Ti-6Al-4V ELI (Grade 23) is a Titanium grade, while Titanium Grade 1 is a Titanium grade.
View full data for each material:
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.