Alumina porous (KR-98-VG)

98% Al2O3

With over 35 years of expe­ri­ence as a ceram­ics manu­fac­turer in Germany, we under­stand exactly what matters when it comes to high-qual­ity high-temper­a­ture ceram­ics. Our KR-98-VG is a specially devel­oped alumina ceramic featur­ing an open poros­ity of approx­i­mately 23%, which makes it signif­i­cantly more resis­tant to ther­mal shock than denser materials—allowing it to better with­stand rapid heat­ing and cool­ing cycles.

In the steel indus­try, a vari­ety of alloys are processed, includ­ing those contain­ing elements such as lead, chromium, iron, copper, manganese, nickel, and bismuth. The high temper­a­tures and aggres­sive melts place demand­ing require­ments on the mate­ri­als used. This is where KR-98-VG proves its value: it is commonly used as a protec­tive crucible and is also suit­able for manu­fac­tur­ing thick-walled compo­nents that reli­ably perform in high-temper­a­ture envi­ron­ments due to their high mechan­i­cal strength.

The key advan­tage of KR-98-VG lies in its compo­si­tion of pure corun­dum, a partic­u­larly hard and chem­i­cally resis­tant form of aluminum oxide. This mineral ensures that the ceramic is not only heat-resis­tant but also highly durable against glass melts and extreme stresses encoun­tered in indus­trial processes.

With KR-98-VG, we offer a prod­uct specif­i­cally tailored to meet the chal­lenges of the steel indus­try and other high-temper­a­ture appli­ca­tions. When it comes to supply­ing ceram­ics you can depend on, we are your trusted part­ner.

SPECIAL PROPERTIES

  • high mechan­i­cal strength
  • high corro­sion resis­tance
  • temper­a­ture resis­tance up to over 1750 °C
  • good ther­mal insu­la­tion
  • high elec­tri­cal insu­la­tion capac­ity
  • chem­i­cally resis­tant to copper, chromium, bismuth, manganese, iron, etc.

Directional Analysis

Vibra­tion cast corun­dum
> 98% (porous)
Qual­ity KR-98-VG
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