Ti-5Al-2Sn-2Zr-4Cr-4Mo, better known as Ti-17 and also designated Ti-5-2-4-4 (UNS R58650), is a beta-rich alpha-beta titanium alloy developed by General Electric as a high-strength, deep-hardening alloy for fan and compressor discs and other large components. It offers higher tensile and creep strength than Ti-6Al-4V, with a lower density and higher modulus than most beta titanium alloys. It is produced by plasma cold-hearth melting followed by vacuum arc remelting, and supplied as forging billet or forged and rolled bar; the billet is certified to AMS 4995.
Table of Contents
What is Ti-5Al-2Sn-2Zr-4Cr-4Mo (Ti-5-2-4-4) Round Bar?
Ti-5Al-2Sn-2Zr-4Cr-4Mo (Ti-5-2-4-4) is a beta-rich alpha-beta titanium alloy (UNS R58650). Aurico Alloys LLP supplies it as round bar from Mumbai, India, cut to size and certified to EN 10204 3.1. Material is supplied against the AMS / ASTM specification for the form ordered.
Size Range & Supply
| Grade / Designation | Ti-5Al-2Sn-2Zr-4Cr-4Mo (Ti-5-2-4-4) |
|---|---|
| UNS Number | R58650 |
| Product Form | Round Bars |
| Size Range | Made to order; quoted against the mill programme in force at the time of enquiry. |
| Condition / Finish | Annealed; pickled or ground to requirement. |
| Certification | EN 10204 3.1 mill test certificate. |
| Packaging | Wooden cases or as required for export. |
The applicable specification for this form is shown in the Equivalent Grades & Standards table below.
Equivalent Grades & Designations
| Property | Value |
|---|---|
| UNS number | R58650 |
| Density | 4.658 g/cm3 |
| Beta transus | 1635 °F |
| Rod and bar specification | Mill specification |
Identifiers and physical constants for Titanium Ti-5-2-4-4. A dash means no such designation is published for this grade.
Chemical Composition of Ti-5Al-2Sn-2Zr-4Cr-4Mo (Ti-5-2-4-4) Round Bar
| Element | Min (%) | Max (%) |
|---|---|---|
| Aluminium (Al) | 4.5 | 5.5 |
| Tin (Sn) | 1.5 | 2.5 |
| Zirconium (Zr) | 1.5 | 2.5 |
| Molybdenum (Mo) | 3.5 | 4.5 |
| Chromium (Cr) | 3.5 | 4.5 |
| Oxygen (O) | 0.08 | 0.13 |
| Nitrogen (N) | — | 0.04 |
| Hydrogen (H) | — | 0.0125 |
| Iron (Fe) | — | 0.3 |
| Titanium (Ti) | — | Balance |
Composition limits for Titanium Ti-5-2-4-4. These are specification limits for the grade, not measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Applications & Uses of Ti-5Al-2Sn-2Zr-4Cr-4Mo (Ti-5-2-4-4)
| Industry / Application | Use |
|---|---|
| Aero-engine discs | Deep-hardening, high-strength fan and compressor discs. |
| Large forgings | Sections that need through-thickness hardenability and creep strength. |
Frequently Asked Questions
Global Export
We ship Ti-5Al-2Sn-2Zr-4Cr-4Mo (Ti-5-2-4-4) Round Bar worldwide from Mumbai. See every destination on our export markets page.
Supply Across India
We deliver across India from our Mumbai stockyard. See every city on our supply locations page.