Tenbloc® inserts

Tenbloc® is a unique in the mould inoculant block without a binder or other additive, which provides consistent, reliable and cost effective inoculation for ductile and grey irons. This assists foundries to produce castings with improved metallurgical structures and mechanical properties.

Careful selection of the raw materials ensures Tenbloc®  has uniform and consistent chemistry, providing homogeneous nucleation of the iron and is available in a wide range of analytical grades which can be tailored to suit specific foundry requirements for both ductile and grey iron.

Typical grades are:

TENBLOC® Std - Formulated to give good nodule count and shape and freedom from carbide in ductile iron

TENBLOC® Std+Zr - Adding Zr to the Std grade effectively controls carbide formation particularly in thin sections where increased undercooling can cause problems.

TENBLOC® Low Al – Restricting Al to <1% makes the Low Al grade well suited for grey iron inoculation minimising the risk of hydrogen pin-holing.

TENBLOC® Low Al+Zr - Adding Zr to the Low Al grade effectively controls carbide formation particularly in thin sections where increased undercooling can cause problems.

TENBLOC® MZ – MZ is suitable for both ductile and grey iron. The controlled amounts of Al, Ca and Zr give a strong inoculating effect and Mn increases the solubility of the block even when the pouring temperatures are low.

TENBLOC® Alternate Grade Availability: Many different grades can be produced and developed to suit specific foundry requirements. Elements such as Ba, Bi, Ce, La and Sr can be added, following discussions with our technical personnel. Smaller trial quantities can be produced for initial trials to determine the best analysis to give the required metallurgical properties in the finished casting.

Close control of all stages of production gives Tenbloc a number of advantages:

  • It is free from impurities, eliminating the introduction of undesirable elements in the iron.
  • There are no slag inclusions, gas holes or porosity.
  • The unique metallurgical bond formed during production is important for immediate and controlled dissolution.