ELKEM MATERIALS INC. offers a new high-aluminum inoculant that, according to the experience of foundries maximizes chill reduction, reduces casting porosity, and increases the tensile strength of gray-iron castings. The new Superseed® Extra Al Inoculant contains a special combination of aluminum, strontium, and zirconium that eliminates chilled white iron in thin sections and corners, increasing the machinability of gray-iron castings.
This new inoculant also achieves strong chill reduction without relying on calcium, as in other inoculation practices. As a result, this low-calcium inoculant generates very little slag, reducing the slag build-up in iron being transferred to pouring equipment and minimizing the possibility of casting defects.
Elkem’s specialty inoculants, nodularizers, cover conditioners, preconditioners, and ferrosilicon products help foundries achieve superior-quality castings that meet user requirements, including chill-free iron, improved graphite structure and mechanical properties, lack of porosity from shrinkage, and lower total costs.