Ti-6Al-7Nb vs Titanium Grade 1: 65% composition overlap. Moderate differences, generally not direct substitutes.
Ti-6Al-7Nb vs Titanium Grade 1
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 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-7Nb | Titanium Grade 1 | |
|---|---|---|
| Material Number | — | 3.7025 |
| Category | Titanium | Titanium |
| Standard | ISO 5832-11 | ASTM B265 |
Chemical composition (wt%)
| Element | Ti-6Al-7Nb | Titanium Grade 1 | Overlap |
|---|---|---|---|
| C | 0–0.08% | 0–0.08% | OK |
| Al | 5.5–6.5% | — | — |
| Ti | — | ≥ 99% | — |
| Nb | 6.5–7.5% | — | — |
Mechanical properties
| Property | Ti-6Al-7Nb | Titanium Grade 1 | Unit |
|---|---|---|---|
| tensile_strength | 900–1050 | 240–310 | MPa |
| yield_strength | 800–950 | ≥ 170 | MPa |
| elongation | 8–15 | ≥ 24 | % |
Compatibility Assessment
Ti-6Al-7Nb 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-7Nb the same as Titanium Grade 1?
Ti-6Al-7Nb and Titanium Grade 1 have a 65% composition overlap. They are generally not directly interchangeable.
Can I replace Ti-6Al-7Nb 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-7Nb and Titanium Grade 1?
The main differences are in the following elements: overall alloying content. Ti-6Al-7Nb 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.