Sports Equipment
Easton launched the "Redline" in February 1997 as their premier line of high performance baseball and softball bats using Ashurst's scandium - aluminum alloy. The use of scandium - aluminum alloys have allowed Easton to achieve strength increases that allow for the production of bats with thinner walls, less weight, greater trampoline effect and enhanced performance. The significantly refined grain size resulted in a strength increase to 97 ksi (670 MPa) yield strength, for the conventional 7x7x type aluminum alloy.  Easton's international advertising and promotional campaign for Redline included the use of these bats to win the world championship softball competition this year.Sc500 is Easton's designation for the alloy used for the aluminum shell in the Easton Redline. This change has been called the most significant change in alloy design for a softball bat since the introduction of C405 back in 1996. The composition for this alloy does not fall exactly in the range for any of the common 7xxx alloys but is most similar to 7055. The addition of Sc to Al in dilute quantities is responsible for increased strength from Al₃Sc precipitation, enhanced weldability, and significant resistance to recrystallization. Resistance to recrystallization means that Al alloys containing Sc will have a finer and more consistent grain size retaining a higher degree of "work" in the microstructure (higher dislocation content) after wrought processing and heat treatment than comparable alloys without Sc. This translates into significantly higher strengths and better overall properties than for a comparable alloy without Sc. The effects of Sc are enhanced in the presence of Zr due to the precipitation of fine Al₃(Zr_xSc_1-x) precipitates. Because this alloy contains both Sc and Zr it was obviously developed to take advantage of this synergistic strengthening effect.
 

In September 1997, STX, the market leader in lacrosse stick sales, contracted for the delivery of several thousand lacrosse sticks made of an Ashurst scandium - aluminum alloy developed for greater strength and lower weight.  Developments are also underway for scandium - aluminum tennis raquets and climbing equipment.

Ashurst GTA welding electrodes are commercially packaged with Easton's most advanced new mountain bike frame. This frame is made from a high strength weldable Al-Sc alloy and the welding filler rods are packaged with the frame components to help ensure the optimum bike performance. Tests have shown a three-fold increase in fatigue strength on these bike frames.  Below is a picture of the Dagger's newest bike using Easton's frame.

Aerospace Applications
Daimler Benz Aerospace are considering the use of Sc-containing Al-alloys in the new generations of Airbus airplanes.  Combinations of Al-Al₃Sc composites and scandium - aluminum alloys are currently being tested at Damiler Benz's research facilities. They hope to take advantage of  7x7x wrought aluminum and aluminum-scandium products exceptional as-extruded or drawn yield and tensile strength proven up to 100ksi (700 MPa).  Shown below is a Al-Al₃Sc composite tube.
 
 

Welding Wire
Advantages of aluminum welding wire with scandium addatice are :
    reduced hot cracking
    reduced grain size
    increased weld strength
The 5025 aluminum alloy designation from the Aluminum Association has been reccomended for its welding filler metal products. Gas Metal Arc (GMA) welding wire is available in various diameters and 1, 5 and 16 pound spools. Gas Tungsten Arc (GTA) welding rod is available in various diameters as well. These products have met the quality certification testing requirements of AWS A5.10.   The 5025 welding filler metal reduces hot cracking in many 7xxx alloys and is especially effective when used in conjunction with weldable high strength Al-Sc alloys. The 5025 alloy also provides enhanced weld strength, especially in 7xxx series alloys.

The superior welding capabilites of the 5025 allow are shown below in comparison to traditional aluminum welding (shown on left).

Additional Products
2% Sc master alloy ingot
Cast extrusion billets of Al-Sc alloys
Seamless tube of Al-Sc alloys
Extruded, drawn, or swaged product forms

Russian Al-Sc alloys
Listed below are some of the Al-Sc alloys that are currently produced in Russia and exported.

Al-Mg-Sc alloys These alloys are in many ways equivalent to the 5xxx series. In order to control the microstructure, they have small additions of Sc, Zr, in some qualities also Ti, Mn, REM and other elements.
1515 - contains 1 % Mg, additions of Sc, Zr, and also some REM
1523 - contains 2% Mg, otherwise as 1515 1535 - contains 4.5% Mg, otherwise as 1515
1570 - contains 6% Mg, additions of Sc, Zr, Mn, Be
1571 - contains 6% Mg. Special alloy for welding wire Al-Zn-Mg-Sc alloys

This series of wrought, age hardenable and weldable alloys are almost similar to the 7xxx series, except for the Sc addition.
1970 - Zr/Mg ratio of 2.6, typically 5%Zn and 1.7 Mg, additions of Cu, Sc, Zr and Ti
1975 - Close to 1970, but lower Sc content (ca. 0.07% Sc) 1981 - Close to AA7012, 1%Cu
1987 - Has superplastic properties Al-Mg-Li-Sc alloys Age hardenable and weldable.
1421 - contains 5% Mg, 2%Li, 0.15%Sc, 0.17%Zr 1423 - contains 3.5% Mg, otherwise as
1421 Al-Cu-Li-Sc alloys High strength and weldable. 1460 - contains 3%Cu, 2%Li, 0.1%Sc, 0.1%Zr