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Ceramic rollers: Nova 421

Nova 421

Ceramic refractory roller consisting of alumina and mullite, particularly versatile in its applications due to its resistance to high temperatures and sudden temperature variations.

Typical Use: 

  • Single-firing

Identification with Brown-coloured ends (upon request) and marking with the lot number and ceramic roller grade.

CHEMICAL-PHYSICAL PROPERTIES

Chemical Analysis:    Al2 O3                       74 - 76  %      

                                  Si O2                         20 - 22  %  

                                  Fe2 O3                      0,5 - 0,9 %

Bulk density                             2,30 - 2,40 Kg/dm3

Apparent porosity                                 25    - 28      %

Water absorption                                10   - 11,5      %

Modulus of rupture R.T                        > 36 N/mm2

Thermal expansion at 1000° C           0,52 - 0,57     %

Thermal shock resistance                  VERY GOOD

 

Data reported on this bulletin are the average of values obtained in our laboratory and do not constitute guarantee.

Dowload our Technical Data Sheet 

 
 
VAT Number : IT 06803790010 | Info societarie