Versatile ATI 425 titanium alloy

Citation

(2004), "Versatile ATI 425 titanium alloy", Aircraft Engineering and Aerospace Technology, Vol. 76 No. 1. https://doi.org/10.1108/aeat.2004.12776aad.005

Versatile ATI 425 titanium alloy

Versatile ATI 425 titanium alloy

Keywords: Alloys, Titanium, Materials

Allegheny Technologies Incorporated (NYSE: ATI) announces ATI 425 titanium, described as an innovative new titanium product that is an alternative to the most common high-strength titanium alloy and an addition to ATI's wide range of high-strength titanium alloys. ATI 425 titanium claims strength comparable to Ti-6Al- 4V; yet, unlike Ti-6Al-4V titanium, ATI 425 titanium is both hot and cold workable. As a result, ATI 425 titanium can be produced in a variety of forms, including sheet, coil, strip, precision rolled strip product, plate, seamless tube and pipe as well as cast and engineered products.

“ATI 425 titanium is the result of our new product development and Coordinated Business Development initiatives,” said Jim Murdy, Allegheny Technologies' President and Chief Executive Officer. “We recognized that the market needed a high-strength, lightweight material that provides certain advantages compared to the existing specialty materials. Because ATI 425 titanium is both hot and cold workable, we can provide nearly all required product forms to a variety of end-use markets using ATI's extensive array of finishing capabilities.”

ATI 425 titanium is covered by ATI's issued patents and pending patent applications. Target markets for the proprietary ATI 425 titanium include aerospace, defence, industrial, medical and recreation in applications where high- strength, lightweight materials are required. In addition, the alloy's corrosion resistance to saltwater environments (similar to that of Ti-6Al-4V) makes it a candidate material in marine-related applications.

One of the key strengths claimed of ATI 425 titanium is that it is comparatively easy to produce and form due to its workability during the production and forming processes. Tests have reportedly shown that ATI 425 titanium can be fabricated more easily than Ti-6Al-4V. Duplex annealed ATI 425 titanium plate exhibited good fracture toughness; cold rolled and annealed ATI 425 titanium sheet has been bent to radii of 2.5 times its thickness. ATI 425 titanium is also heat treatable and can be solution-treated and aged to higher strength levels. Initial results are said to indicate that the alloy is weldable and that annealed welds are ductile.

Allegheny Technologies plans further development of ATI 425 titanium products for a wide variety of uses.

Details available from: Allegheny Technologies. Tel: +1 541 924 6896; Web site: www.alleghenytechnologies.com