Cotronics Castable ceramic cement

Castable ceramic cement Cotronics products available in six refractory compositions: Alumina, Ceramic Foam, Silica, Silicon Carbide and Zirconia.

Castable cement Cotronics 740, 750, 760, 770, 780 and RTC-60

Parts as small as an inch to parts measuring over 6 ft. in length, and over 2000 pounds in weight, are easy to make.

Just mix and pour into any non-absorbent mold and let harden overnight to produce highly detailed ceramics, usable to 2200ºC.

Now an unlimited number of high temps. Problems can be solved with ceramics using an in-house process.

  • 740 - 1260 °C : Al2O3/SiO2 insulating foam
  • 750 - 1480 °C : Shock resistant
  • 760 - 2200 °C : Ultra-high temperature
  • 770 - 1480 °C : Corrosion resistance
  • 780 - 1650 °C : Alumina for general purpose
  • RTC 60 - 1760 °C : High purity alumina

Castable ceramic cement (292.63k)

Technical data sheet castable ceramic cement.

Rescor 750 Moldable Ceramic

Rescor 750 - Moldable Ceramic, Fused Silica

Cotronics Rescor® 750 is a  ceramic casting cement for high temperature applications.  The product has excellent electrical and mechanical properties and very good thermal stability. It is a liquid  silicate cement with a temperature resistance of up to 1480°C. It is not very dilatable and does not conduct heat well. It is available in 4L, 23L and 39L pots.  For larger sizes, please contact us.
Full description
Back to top

FAQs that can help you in this category

What is the difference between a castable ceramic cement and a potting cement?

A castable ceramic cement has low viscosity, enabling casting or pouring in moulds of complex shapes. It is formulated to limit segregation, to ensure effective dimensional reproducibility, and to produce a ceramic part. Potting cement is used to encapsulate or fix components in an assembly.

At Final Advanced Materials castable cements are optimised for the manufacture of parts (final density 2.0–3.0 g/cm³), while potting cements are designed to prioritise adhesion in assemblies (housings, resistor overmoulding, etc.).

Which high-temperature ceramic cement should I choose to manufacture foundry moulds?

For foundry moulds Final Advanced Materials produces alumina, silicon carbide, silica or zirconia-based cements, which are suited for temperatures between 1,200 and 2,200°C. Zirconia formulations are particularly suitable if a very high resistance to chemicals is required. Alumina cements have better mechanical resistance (>40 MPa in compression). SiC cement is a very good option for molten metal casting, launders, crucibles or nozzles. The choice depends on the cast metal and the temperature (e.g.: aluminium ~700°C, steel >1,500°C) and the thermal shock resistance.

What is the compression resistance of casting cements?

The ceramic casting cements produced by Final Advanced Materials have standard compression resistances of 10 to 40 MPa, depending on the formulation and porosity. Thermal shrinkage is generally low, reducing internal stresses and cracking. Dense alumina-based formulations offer the best mechanical performance, while more insulating systems have a lower resistance, but reduced thermal conductivity (<0.15 W/m·K).

Epoxy resin or ceramic cement: which moulding resin should I choose for a given application?

The choice depends mainly on the temperature and the mechanical stresses.

Final Advanced Materials' high-temperature epoxy resins are generally limited to temperatures ranging between 150 and 350°C, have a good mechanical resistance (typical sheer-stress 10–30 MPa) and a degree of elasticity.

However, the ceramic cements produced by Final Advanced Materials can be used up to 2,200°C, depending on the grade (alumina, zirconia, silicon carbide, silica). They have excellent temperature resistance, but remain fragile (brittle behaviour, no elasticity).

Environmental constraints are important factors which must also be taken into account.