Suprex crucibles are carbon-bonded silicon carbide crucibles, which are characterized by excellent thermal conductivity and high chemical erosion resistance. Based on application and furnace type respective types of Suprex are available.

Leaflets Shapes


Suprex B: Recommended for copper and copper alloys in fuel fired furnaces

Suprex R: Recommended for aluminium /aluminium alloys melting and zinc oxide producing in fuel fired furnaces

Suprex E: Recommended for aluminium /aluminium alloys and zinc melting and holding in electric resistance furnaces

Suprex Typical Metal Casting Temperature 

Suprex B 800°C - 1400°C (1472°F - 2550°F)

Suprex R 700°C - 1000°C (1292°F - 1830°F) 

Suprex E 450°C - 900°C (842°F - 1652°F) 

Suprex E - Plus 450°C - 900°C (842°F - 1652°F) 

Performance Characteristics

  • Fast melting speed through high consistent thermal conductivity
  • Excellent thermal shock resistance
  • High resistance to oxidation
  • Good erosion resistance
  • Good resistance to corrosive attack by chemical treatment agents


Suprex B crucibles are finished with a brown coloured coating

Suprex R crucibles are finished with a red coloured coating

Suprex E crucibles are finished with a grey coloured coating

Suprex E-Plus crucibles are finished with a grey coloured coating

Pattern Range

Suprex crucibles are available in a comprehensive range of shapes and sizes to suit most end user requirements.

For available sizes and shapes click here.


Excel and Himelt crucibles are manufactured from premium grade raw materials under an ISO 9001:2015 quality management system.

For more information, contact us today