Titanium alloy is an important structural metal with high strength, good corrosion resistance and heat resistance. It is mainly used for components such as motors and pressurizers. So, what are the types of titanium alloy? What is the difference between titanium and stainless steel?

Types of titanium alloys: At room temperature, titanium alloys have three types of matrix organization, titanium can be divided into the following three categories: α-alloys, (α + β) alloys and β-alloys. In China, they are denoted by TA, TC and TB respectively.

I. α-alloys: It is a single phase alloy composed of α phase solid solution, whether at general temperature or at higher temperature of practical application, it is α phase, with stable organization, higher wear resistance than pure titanium, and strong oxidation resistance. In the temperature of 500 ° C ~ 600 ° C, still maintains its strength and creep resistance, but can not be strengthened by heat treatment, room temperature strength is not high.

II. β alloy it is β-phase solid solution composed of single-phase alloy, not heat-treated that has a high strength, quenching, aging the alloy is further strengthened, the room temperature strength of up to 1372 ~ 1666 MPa; but the thermal stability is poor, should not be used at high temperatures.

III. α+β alloy It is a dual-phase alloy with good comprehensive performance, good organizational stability, good toughness, plasticity and high-temperature deformation properties, good hot pressure processing, quenching, aging to make the alloy strengthened. The strength after heat treatment is about 50% to 100% higher than that of the annealed state; the high temperature strength is high, and it can work for a long time under the temperature of 400°C to 500°C. Its thermal stability is second to that of α alloy.

Titanium vs Stainless Steel

1, there is a difference in color. Titanium is a little dark, through a kind of cold color, think cool, titanium is a little darker than steel. Steel is white, miserable white kind. The two colors are very visible.

2, there can be a difference with nitric acid bubble. Titanium does not react, stainless steel will react strongly once put down.

3, titanium can be scratched on the tile gray-black marks to, but stainless steel can not be scratched marks to.

4, titanium corrosion resistance is good: below 550 ° C easy to form a dense oxide film, so it is not easy to be further oxidized, on the night air, seawater, steam, and some acids, alkalis, soft media have a high resistance to loss of corrosion thing.

5, titanium thermal strength: titanium alloy melting point of 1660 ° C, higher than iron, has a high thermal strength, can be below 550 ° C things, while at the same time in the low temperature appears better toughness. The above is the type of titanium alloy and the difference between titanium and stainless steel where the relevant introduction, I hope to enhance your understanding of these metals!