Refratechnik Cement GmbH Rudolf-Winkel-Strasse 1 D37079 Gottingen Tel.+49 55169410 Fax.+49 551 6941104 e-mail
[email protected] www.refra.com
REFRATECHNIK
REFRAMAG ®AF Raw material basis Magnesia-Spinel
Physical properties Bulk density g/cm3
2.85--3.00
Apparent porosity %
15--17
Cold crushing strength 2
N/mm
65
Refractoriness under load ℃ ta
>1700
te
>1700
Pyrometric cone equivalent S.C.
>42
Thermal expansion lin.-% at 400 ℃
0.4
at 800 ℃
0.9
at 1200 ℃
1.5
thermal shock resistance 950 ℃/air
100
Thermal conductivity W/mK at 300 ℃
4.0
at 700 ℃
3.0
at 1000 ℃
2.8
Chemical analysis weight % MgO
82--87
Al2O3
11--14
Fe2O3 approx.
0.8
CaO approx.
1.4
SiO2 approx.
0.9
Mortar % weight of brick AG-R mortar
1.5--4%
The stated values are qual-ity characteristics deter-mined for machine-pressed standard shapes in accordance with or with reference to DIN specifications. They are typical standard values, which cannot be considered as binding specifications. All prevopusly published technical data are replaced by the values stated herein and thus become invalid. kindly follow our storage instructions. State 12/2002
