Stopper Rods

We have developed a new range of stopper rods (or monoblock stoppers) for ferrous foundry applications.

Leaflets & Shapes

Our various laboratory trials resulted in an alumina graphite composition which is now used primarily for grey and ductile iron applications. Our ceramic-bonded stopper rods have a refractoriness of 1600 – 1700°C with significant strength and erosion resistance making them the right choice for Auto Pour applications i.e. unheated tundish systems as well as press-pour systems.

Our advanced technology of material processing results in a homogenous structure, which yields excellent performance within customer applications.

Chemical Composition
C 32-36% 
SiO₂ 12-16%
Si 4-6%
Al2O3 33-37%
Na₂0, K₂0, Fe2O3, B2O3 & others 8-10%
Physical Properties
Density 2.2-2.3 g/cm²
Porosity (in water) 15-17%
Cold compression strength (CCS) 20-24 MPa

To see how our stopper rods can be used for your application, please contact us today.