Ti-6Al-2Sn-4Zr-2Mo vs Ti-6Al-7Nb: 94% composition overlap. Very similar materials, likely interchangeable for most applications.
Ti-6Al-2Sn-4Zr-2Mo vs Ti-6Al-7Nb
Side-by-side chemical composition and mechanical property comparison.
Overview
Ti-6Al-2Sn-4Zr-2Mo
Near-alpha high-temperature titanium alloy. Better creep resistance than Ti-6Al-4V at temperatures above 400°C — usable to 550°C continuous. Sn and Zr are alpha-stabilizers providing solid-solution strengthening without eutectoid decomposition. THE jet engine compressor disc alloy (stages 2-7 typically). Also used for afterburner structures, blisks, and gas turbine components. Si addition (0.06-0.10%) further improves creep.
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.
| Ti-6Al-2Sn-4Zr-2Mo | Ti-6Al-7Nb | |
|---|---|---|
| Material Number | — | — |
| Category | Titanium | Titanium |
| Standard | ASTM B381 | ISO 5832-11 |
Chemical composition (wt%)
| Element | Ti-6Al-2Sn-4Zr-2Mo | Ti-6Al-7Nb | Overlap |
|---|---|---|---|
| C | — | 0–0.08% | — |
| Si | 0.06–0.1% | — | — |
| Mo | 1.8–2.2% | — | — |
| Al | 5.5–6.5% | 5.5–6.5% | OK |
Mechanical properties
| Property | Ti-6Al-2Sn-4Zr-2Mo | Ti-6Al-7Nb | Unit |
|---|---|---|---|
| tensile_strength | 900–1000 | 900–1050 | MPa |
| yield_strength | 830–900 | 800–950 | MPa |
| elongation | 10–15 | 8–15 | % |
Compatibility Assessment
Ti-6Al-2Sn-4Zr-2Mo and Ti-6Al-7Nb have very similar compositions (94% overlap) and are likely interchangeable for most applications. Verify mechanical properties for your specific use case.
Automated assessment based on composition analysis
Frequently Asked Questions
Is Ti-6Al-2Sn-4Zr-2Mo the same as Ti-6Al-7Nb?
Ti-6Al-2Sn-4Zr-2Mo and Ti-6Al-7Nb have a 94% composition overlap. For most purposes, they can be considered similar.
Can I replace Ti-6Al-2Sn-4Zr-2Mo with Ti-6Al-7Nb?
In many cases, yes. The compositions overlap significantly (94%). However, always verify mechanical property requirements and heat treatment compatibility for your specific application.
What is the difference between Ti-6Al-2Sn-4Zr-2Mo and Ti-6Al-7Nb?
The main differences are in the following elements: overall alloying content. Ti-6Al-2Sn-4Zr-2Mo is a Titanium grade, while Ti-6Al-7Nb 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.