Magnesia Carbon Brick

Carbon-bonded magnesia brick combining the slag resistance of magnesia with the thermal conductivity and low expansion of carbon, in grades MT10A to MT18A by carbon content.

Grades / types: MT10A, MT12A, MT14A, MT16A, MT18A

Product overview

Magnesia carbon brick makes use of the strong slag erosion resistance of magnesia together with the high thermal conductivity and low expansion of carbon. This compensates for the poor spalling resistance of magnesia raw materials.

The brick has good high-temperature performance, strong slag resistance, good thermal shock resistance and a low high-temperature creep rate.

Key characteristics

Strong slag erosion resistance from magnesia
High thermal conductivity and low expansion from carbon
Good spalling resistance
Good thermal shock resistance
Low high-temperature creep rate

Technical data

Physical and chemical specification
Property	Unit	MT10A	MT12A	MT14A	MT16A	MT18A
MgO	%	≥80	≥78	≥76	≥74	≥72
C	%	≥10	≥12	≥14	≥16	≥18
Apparent Porosity	%	≤4	≤4	≤3.5	≤3.5	≤3.0
Bulk Density	g/cm³	≥3.02	≥2.97	≥2.95	≥2.92	≥2.89
Cold Crushing Strength (CCS)	MPa	≥40	≥40	≥38	≥35	≥35
Hot Modulus of Rupture (HMOR) (1400℃×0.5h)	MPa	≥6	≥6	≥10	≥8	≥10