Product Profile of Titanium Alloys

Steel Mart offers Titanium and Titanium Alloys. Steel Mart is an ISO 9001-2000 certified company. The Titanium Alloys are used in aerospace, energy, and chemical industries. The combination of high strength-to-weight ratio, excellent mechanical properties and corrosion resistance makes titanium the best material choice for demanding applications such as static and rotating gas turbine engine components. Some of the most critical and highly-stressed civilian and military airframe parts are made of these alloys.

Titanium also finds applications in nuclear power plants, food processing plants, oil refinery heat exchangers, marine components and medical prostheses. As aircraft engine manufactures seek to use cast titanium at higher operating temperatures, Ti-6Al-2Sn-4Zr-2Mo and Ti-6Al-2Sn-4Zr-6Mo are being specified more frequently. Other advanced high-temperature titanium alloys are used for service up to 595degree C, such as Ti-1100 and IMI-834 are being developed as castings. The wrought products are the most readily available product form of titanium-base materials, although cast and powder metallurgy [P/M] products are also available for applications that require complex shapes or the use of P/M techniques.

Powder metallurgy of titanium is restricted to space and missile applications. Titanium-base products have the combination of low density [4.5 g/cm3] and high strength. The strengths vary from 480 MPa for some grades of commercial titanium to about 1100 MPa for structural titanium alloy products and over 1725 MPa for special forms such as wires and springs. Another important characteristic of titanium- base materials is the reversible transformation of the crystal structure from alpha [a, hexagonal close-packed] structure to beta [b, body-centered cubic] structure when the temperatures exceed certain level. Pure titanium wrought products, which have minimum titanium contents ranging from about 98,635 to 99, 5 wt% and are used primarily for corrosion resistance.

Titanium and Titanium Alloys has the following
Advantages:

• Good strength

• Resistance to erosion and erosion-corrosion

• Very thin, conductive oxide surface film

• Hard, smooth surface that limits adhesion of foreign materials

• Surface promotes drop wise condensation

• Titanium-palladium alloys with nominal palladium contents of about 0,2% Pd are used in applications requiring excellent corrosion resistance in chemical processing or storage applications

• The most widely used titanium alloy is the Ti-6Al-4V alpha-beta alloy

Other titanium alloys are designed for particular application areas like:

• Alloys Ti-5Al-2Sn-2Zr-4Mo-4Cr [commonly called Ti-17] and Ti-6Al-2Sn-4Zr-6Mo for high strength in heavy sections at elevated temperatures

• Alloys Ti-6242S, IMI 829, and Ti-6242 [Ti-6Al-2Sn-4Zr-2Mo] for creep resistance

• Alloys Ti-6Al-2Nb-ITa-Imo and Ti-6Al-4V-ELI are designed both to resist stress corrosion in aqueous salt solutions and for high fracture toughness

• Alloy Ti-5Al-2,5Sn is designed for weldability, and the ELI grade is used extensively for cryogenic applications

• Alloys Ti-6Al-6V-2Sn, Ti-6Al-4V and Ti-10V-2Fe-3Al for high strength at low-to-moderate temperatures