The Mullite Insulating Fire Brick (WAM-28) , Refractory Brick

• Customization: Available
• Refractoriness (℃): 1580< Refractoriness< 1770
• Feature: Long Time Materials
• Model NO.: WAM-28
• Shape: Brick
• Material: Mullite
• Size: According to The Drawing
• Transport Package: Carton, Wooden Pallet
• Specification: SGS&ISO
• Trademark: WAM
• Origin: China
• HS Code: 69022000
• Production Capacity: 8, 000, 000 PCS/Year

Product Description

Mullite insulating bricks characteristics and advantages:
1. Lower content of iron, alkaline and impurities, good high temperature properties.
2. Homogeneous structure, light weight, energy saving because lower heat storage in the furnace during cooling cycles.
3. High strength, good thermal shock resistance under high temperature.
4. Precise sizes due to grinding and shaping after sintering, which meets the requirement of construction.
5. Max service temp: Up to 1730C (3160F)

Physical and Chemical Properties of insulating  brick
Index /brand		WAM-20	WAM-23	WAM-25	WAM-26	WAM-28	WAM-30	WAM-32
Classification temperature  o C		1230	1260	1350	1430	1540	1650	1760
F		2246	2300	2462	2606	2804	3002	3200
Bulk density   kg/m 3		520	580	800	800	890	1030	1250
Ib/ft 3		32	36	50	50	55.5	64	78
Modulus of rupture    MPa		0.7	0.9	1.4	1.5	1.6	1.7	2
Ib/in 2		102	131	203	218	232	247	290
Cold crushing strength   MPa		1.2	1.2	2.0	2.0	2.6	2.8	3.4
Ib/in 2		174	174	363	348	377	406	493
Permanent Liner Change   %		-0.1	-0.1	-0.5	-0.5	-0.8	-0.9	-0.9
o C x hour		1230X24	1230X24	1350X24	1400x24	1510x24	1620x24	1730x24
	400 o C	0.17	0.17	0.24	0.24	0.30	0.40	0.49
Thermal conductivity	600 o C	0.19	0.19	0.28	0.27	0.32	0.42	0.50
(W/m. k)	800 o C	0.22	0.22	0.32	0.30	0.35	0.44	0.51
	1000 o C	0.24	0.25	0.37	0.32	0.38	0.45	0.53
	1200 o C	--	--	--	0.35	0.39	0.47	0.55
Al2O3   %		45	45	45	55	65	72	76
Fe2O3    %		0.7	0.7	0.65	0.6	0.3	0.3	0.3
SiO2     %		50	50	50	42	33	26	22
TiO2    %		1.3	1.2	1.3	1.1	0.9	0.5	0.3
CaO+ MgO   %		0.5	0.7	0.6	0.3	0.2	0.3	0.2
K2O+ Na2O    %		1.0	1.3	1.1	1.1	0.8	0.2	0.1
The above datas are subject to normal manufacturing variations and change without notice. Results should not be used for specification purpose.