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1. reference criteria (1) tension test method of gb 228 metal (2) gb 224 metal pipe hydraulic test method (3) flattening test method of gb 226 metal tube

(1) increasing the production capacity and reducing the production cost of electrolytic copper have better economic benefits. (2) the contamination of copper electrolyte can be avoided because titanium seed plate does not need to be coated with separating agent. (3) the crystal structure of electrolytic copper made of titanium seed plate is compact, the surface is smooth and smooth, and the quality is excellent.

there are two standards for the implementation of titanium plate, the national standard is gb/t3621-2007, gb/t13810-2007, and the american standard is astm b265, astm f136, astm f67, ams4928.

national standards: gb/t 2965-2007, gb/t 13810, q/bs5331-91 american standards: astm b348, astm f136, astm f67, ams4928

titanium alloys can be classified into three types according to their phase composition: alpha alloys, (alpha beta) alloys and beta alloys. china is represented by ta, tc and tb, respectively.

alpha alloys contain a certain amount of stable alpha phase elements, which are mainly composed of alpha phase in equilibrium state. alpha alloys have low specific gravity, good thermal strength, good weldability and excellent corrosion resistance. the disadvantage is low room temperature strength. alpha alloys are usually used as heat-resistant and corrosion-resistant materials. alpha alloys can also be divided into total alpha alloys (ta7), near alpha alloys (ti-8al-1mo-1v) and alpha alloys (ti-2.5cu) with a small amount of compounds.