Zirconium Technical Data & Applications
Zirconium data and fabrication resources.
Zirconium Alloys: Zircadyne® 702 and Zircadyne® 705
Zircadyne® alloys are composed of 95.5% to 99.2% zirconium and hafnium with a maximum hafnium content of 4.5%. Zircadyne mill products are available in two chemical grades each sharing excellent corrosion resistance and also having slightly different physical and mechanical properties. Zircadyne 702 Zirconium is commercially pure. Zircadyne 705 zirconium is alloyed with niobium to increase its strength and improve its formability. Table 1 shows the chemical composition of Zircadyne alloys. The presence of hafnium in Zircadyne alloys does not significantly influence the physical, mechanical, or corrosion properties. Zirconium, a reactive metal, has a high affinity for oxygen that results in the formation of a protective oxide layer in air at room temperature. This protective oxide gives Zircadyne alloys their superior corrosion resistance and this oxide layer can be enhanced through a heat-treating process. A properly formed enhanced oxide layer serves as an excellent bearing surface against a variety of materials, imparts impressive erosion resistance in high-velocity systems, and can improve the corrosion resistance in certain aggressive environments.
Zircadyne 702/705 in Hydrochloric Acid
Hydrochloric acid is a very important industrial chemical, with numerous diverse uses throughout the chemical processing industry. It is a strong reducing acid and is employed as an intermediate reactant in the production of many everyday products. Some of the principal applications for hydrochloric acid use are shown in Table 1.
The majority of hydrochloric acid is produced as a byproduct of petrochemical production or is co-produced in a variety of chemical reactions involving chlorine or chlorine-compounds with hydrogen containing materials. There are also a few chemical facilities that produce hydrochloric acid by burning chlorine and hydrogen to form gaseous HCl. This gas is then absorbed into water to produce the aqueous solution. Commercially pure hydrochloric acid is available at concentrations up to 37%
Sandvik Zirconium Zr 702: Tube and Pipe, Seamless
Sandvik Zr 702 is a zirconium grade characterized by immunity to stress corrosion cracking and high resistance to pitting and crevice corrosion. The grade has very good corrosion resistance in most organic acids, excellent corrosion resistance in mineral acids, good corrosion resistance in strong alkalis, and moderate mechanical strength. Sandvik Zr 702 main characteristics: High heat transfer efficiency; Very low thermal expansion; Immunity to stress corrosion cracking (SCC); High resistance to localized (pitting and crevice) forms of corrosion; Very good corrosion resistance in most organic acids; Exceptional corrosion resistance in mineral acids; Good corrosion resistance in strong alkalis. Sandvik Zr 702 is used in environments where even the best stainless steels are not sufficiently corrosion-resistant. Zirconium is in many cases the ideal choice from both technical and economical point of view (the price/life-time relation).
Zirconium in Organic Applications
Laboratory studies and case histories have established zirconium as the most corrosion resistant material of construction in many production methods involving organic media. In fact, zirconium plays a pivotal role in production of a wide range of organic materials including formic, acetic, hydroxyacetic, lactic and methacrylic acids, urea, methyl methacrylate, rayon, and various alcohols and phenolic resins. The ability of zirconium to withstand high temperatures and concentrations coupled with the fact that the zirconium ions are colorless allows its use in dye manufacturing and other areas where the color of the final product is critical. Zirconium also appears to be nontoxic and biocompatible
Zirconium has excellent corrosion resistant in most organic media. Exceptions are chlorinated hydrocarbons and organic solutions that contain halogens or halides in the absence of adequate water. Under these conditions zirconium can experience high corrosion rates or suffer from hydriding.
Zirconium in Sulfuric acid Applications
In the chemical industry, sulfuric acid has many diverse applications. The largest quantities are used in the manufacture of phosphate and nitrogen based fertilizers. The petrochemical sector utilizes sulfuric acid in alkylation and paraffin refining. The inorganic branch of the chemical industry uses sulfuric acid in the production of chromic and hydrofluoric acids, aluminum sulfate and sodium sulfate.The organic arm employs sulfuric acid in the manufacture of explosives, soaps, detergents, dyes, isocyanates, plastics, pharmaceuticals, etc. Everywhere one turns in today’s world we encounter products which use sulfuric acid in their manufacturing process.
Zirconium Surplus Materials For Sale
We have an extensive inventory of surplus Zirconium materials for sale. If you need Zirconium for repairs, upgrades, or new projects, look no further. Give us a call, or send us an e-mail.