Aluminum Titanium (AlTi) Master Alloy

The addition of titanium at very low levels is a traditional method of grain refining aluminum and its alloys. Certain international standard specifications do include mandatory limits for titanium, particularly the foundry alloys, but in most cases its presence is optional.

Today this practice has been largely overtaken by advances in highly efficient grain refining techniques involving titanium in combination with boron (see KBM Affilips AlTiB).

However, titanium additions often continue to be favoured in cases where the exclusion of hard intermetallic particles is considered to be paramount, such as foil stock, lithographic sheet and automotive trim. Titanium is most easily introduced as AlTi master alloy either in ingot form or as rod for continuous addition into the launder outside the furnace. N.B.

Such additions can be accomplished using the KBM Affilips engineered rod feeder.

Composition of Aluminum Titanium Master Alloy

The following table shows the various AlTi alloys supplied by KBM Affilips:

Alloy Composition
AlTi5

5% Ti
balance Al

AlTi6

6% Ti
balance Al

AlTi10

10% Ti
balance Al

Ti80

80% Ti
balance Al and/ or flux

This information has been sourced, reviewed and adapted from materials provided by KBM Affilips.

For more information on this source, please visit KBM Affilips.

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