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Titanium Grade 2 vs Grade 5

Comparison

Quick Answer

Titanium Grade 2 (UNS R50400) is commercially pure titanium; Grade 5 (UNS R56400) is Ti-6Al-4V with about 6% aluminium and 4% vanadium. Vanadium shows on any handheld XRF and separates them. Grade 2 comes mostly from chemical plant, Grade 5 from aerospace machining, and melters keep the two apart.

Summary

Commercially pure titanium is chosen for corrosion resistance; Grade 5 for strength. Both are non-magnetic and both are about 4.4–4.5 g/cm³, so density will separate them from nickel alloys but not from each other.

Melters keep CP and alloyed titanium apart. Vanadium is the quick check. See Titanium Grade 2 scrap and Titanium Grade 5 scrap.

Side by Side

Titanium Grade 2Titanium Grade 5
TypeCommercially pureAlpha-beta alloy
AlloyingNone (iron about 0.3%)Aluminium 6%, vanadium 4%
Key XRF markerNo alloying elementsVanadium about 4%
Typical serviceHeat exchangers, desalination, chemical pipingAircraft structures, fasteners, risers
Common scrap formsTube, pipe, plateTurnings, solids, forgings

Composition Compared

Nominal compositions compared element by element. Values are the nominal figures from each grade page; change either grade to compare others.

vs
ElementTitanium Grade 2Titanium Grade 5Difference
Ti Titanium99.7%89.75%+9.95
Al Aluminium0%6%-6
V Vanadium0%4%-4
Fe Iron0.3%0.25%+0.05

On a handheld XRF: the clearest differences between Titanium Grade 2 and Titanium Grade 5 are titanium (99.7% vs 89.75%) and vanadium (0% vs 4%). Light elements such as aluminium, silicon, carbon and nitrogen need a light-element instrument, OES or a laboratory.

On the XRF

Titanium Grade 2 UNS R50400

Ti99.7%
Fe0.3%

Titanium Grade 5 UNS R56400

Ti89.75%
Al6%
V4%
Fe0.25%

Switch the grade to see how the fingerprint changes. See how XRF sorts nickel alloys.

FAQ

What is the main difference between Titanium Grade 2 and Grade 5?

Titanium Grade 2 is commercially pure; Grade 5 is Ti-6Al-4V with about 6% aluminium and 4% vanadium. Composition compared, and why scrap is kept apart.

Can Titanium Grade 2 and Titanium Grade 5 scrap be mixed?

No. Keep them separate. A remelter needs Titanium Grade 2 and Grade 5 kept apart; a mixed lot is either sent back for sorting or valued at the lower of the two.

What are the UNS numbers of Titanium Grade 2 and Titanium Grade 5?

Titanium Grade 2 is UNS R50400 and Titanium Grade 5 is UNS R56400.

Can Titanium Grade 2 and Titanium Grade 5 scrap be sold in one lot?

Not without losing value. They differ most in titanium and aluminium, so a melter making either grade wants the other kept out. Mipra Steel buys and sells them as separate lots.

Sources and Review

Composition figures on this page are the nominal values from each grade's own page on this site, where the producer datasheet or standard is named in full. The comparison widget reads the same values. The sources behind the grades are listed below.

Published by Mipra Steel, Khetwadi, Mumbai · Last updated

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