What Is The Difference Between Titanium Steel, Pure Titanium, And Titanium Alloys?

Mar 28, 2024

Titanium sponge is loose and porous, with very low strength, and cannot be used directly as a titanium material. It is the most upstream material of titanium material and is processed into various shapes of plates, wires and tubes. It is melted, forged and rolled. Titanium sponge has a titanium content close to 100%. But titanium is too active to react easily with oxygen, nitrogen and hydrogen in the air, so it is almost impossible to reach 100% purity.

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Titanium content is generally above 95%, becoming industrially pure titanium. Pure titanium is divided into TA1-TA4 according to its titanium content and impurity content. we usually see TA1 and TA2. impurities are mainly oxygen, nitrogen, hydrogen, carbon, iron, etc. The higher the titanium content, the more pure it is. The higher the titanium content, the softer it is, the lower the strength we talk about, but its toughness is also better. So when we make titanium belt buckles and titanium jewelry, we will use TA1 material in the place where the force is not very strong, while shafts and tiny screws like this, we will use TA2 material. When we make pure titanium cups, we cannot use TA2. the higher the purity, the better. Especially the lower the hydrogen content. Otherwise, the toughness is not enough, easy to rupture, or obvious stretching lines, or pockmarks, scrap rate is quite high.

Titanium alloy parts are made by combining titanium with other metals and non-metals. These metals and non-metals such as aluminum, molybdenum, vanadium, chromium, iron, zirconium, tin, oxygen, carbon and so on. Titanium alloys are further divided into TA, TB and TC series according to their metallurgical structure.

Take the commonly used TC4 titanium alloy as an example, its titanium content is 90%, aluminum 6%, vanadium 4%, so it is also called titanium 6 aluminum 4 vanadium.TC4 titanium alloy is the earliest developed and most widely used titanium alloy in the world, and it is also the earliest titanium alloy used for medical treatment. Its production accounts for more than 80% of the world's total output of various titanium alloy products, especially in the aerospace industry. It has a high corrosion resistance, high strength than pure titanium, toughness is good, processing and welding is relatively easy, so the overall performance is excellent, and also like pure titanium is not cause allergies.

Is pure titanium or titanium alloy better? This is not decisive, different materials for different products, in general, in addition to the shape factor, titanium alloy material costs more than pure titanium. Of course, titanium tubing here is a conventional label based on titanium to which other metals and non-metals are added, rather than adding a little titanium to other metals containing a little titanium to pretend it is a titanium alloy.