Grade	IN-23	IN-26	IN-28	IN-30
Working TEMP (°F)	2300	2600	2800	3000
Working TEMP (°C)	1260	1427	1538	1649
Denisty (lb/ft3) Kg/m3	(36) 577	(50) 801	(55) 881	(64) 1025
Cold crushing strength (Mpa) lb/in2	(1.65) 240	(1.79) 260	(6.34) 920	(2.83) 410
Modulus of Rupture (Mpa) lb/in2	(.85) 124	(1.38) 200	(3.10) 450	(1.52) 220
Permanent Linear Change %
(after heating 24 hours @)
2246°F (1230°C)	0.0
2550°F (1399°C)		-0.4
2750°F (1510°C)			-0.9
2950°F (1620°C)				-1.3
Thermal Conductivity (Btu-in/ft2,hr,°F) W/mk
752°F	1.25	1.88	1.81	2.72
400°C	0.18	0.27	0.26	0.39
1112°F	1.39	2.09	2.02	2.93
600°C	0.20	0.30	0.29	0.42
1472°F	1.60	2.30	2.16	2.30
800°C	0.23	0.33	0.31	0.43
1832°F	1.81	2.51	2.37	3.07
1000°C	0.26	0.36	0.34	0.44

 

Grade	IN-23	IN-26	IN-28	IN-30
Silica - SiO2	39.7%	39.1%	31.3%	24.8%
Alumina Al2O3	56.3%	57.2%	65.8%	73.0%
Titania - TiO 2	1.5%	1.1%	0.8%	0.4%
Iron Oxide - Fe2O3	0.7%	0.7%	0.7%	0.7%
Lime - CaO	0.4%	0.5%	0.2%	0.2%
Magnesia - MgO	0.4%	0.4%	0.2%	0.2%
Soda - Na2O	0.1%	0.2%	0.3%	0.1%
Potash - K2O	0.9%	0.8%	0.5%	0.6%

Data are avarage results of test conducted under standard procedures and are subject to variation. Results should not be used for specification purposes. Note: A material safety data sheet is available upon request. The information, recommendations and opinions set forth herein are offered solely for your consideration, inquiry and verification, and are not, in part or total, to be construed as constituting a warrant or representation for which we assume legale responsibility. Nothing contained herein is to be interpreted as authorization to practice patented invention without a license.