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What are the differences between pure titanium and titanium alloys?

What are the differences between pure titanium and titanium alloys? Those who understand this field know that in titanium metals, including Shanghai titanium plates, titanium rods, titanium pipes, etc., pure titanium and titanium alloys are included. So, are there any differences between these two titanium metals? What are these differences?

The significant difference between pure titanium and titanium alloys is that titanium alloys add chemicals such as Al, Mo, Cr, Sn, etc. to pure titanium, and it is precisely because of these chemicals that these two titanium metals differ in performance. This article focuses on the analysis and introduction of pure titanium in terms of classification, performance, and use.

1、 Classification of pure titanium

According to the impurity content, titanium is divided into high-purity titanium (with a purity of 99.9%) and industrial pure titanium (with a purity of 99.5%). Industrial pure titanium has three grades, represented by TA+sequential numbers 1, 2, and 3. The higher the number, the lower the purity.

2、 Performance of pure titanium

Ti: 4.507 g/cm3, Tm: 1688 ℃. Having an isomeric transformation with a dense hexagonal structure at ≤ 882.5 ℃ α Phase, body centered cubic structure at ≥ 882.5 ℃ β Xiang.

Pure titanium has low strength, but high specific strength, good plasticity, good low-temperature toughness, and high corrosion resistance. Titanium has good pressure processing performance but poor cutting performance. Titanium can burn when heated in nitrogen, so argon gas protection should be used for heating and welding.

3、 The use of pure titanium

The impurity content has a significant impact on the performance of titanium, and a small amount of impurities can significantly improve the strength of titanium. Therefore, industrial pure titanium has high strength, close to the level of high-strength aluminum alloys, and is mainly used to manufacture petrochemical heat exchangers, reactors, ship parts, aircraft skins, etc. that operate at temperatures below 350 ℃.

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