Insulating Fire Bricks

Insulating fire bricks (IFBs) are called soft bricks; compared to hard bricks or Fireclay bricks, they are light in weight. They can be easily cut by handheld hack saw or other hand tools like chisel. Insulating firebricks have high porous rate and have excellent insulating properties. KT insulating firebricks are white in color and have precise dimensions.

KT Refractories offers a complete range of insulating firebrick (IFB) that offer excellent performance and value for a wide variety of industries and applications. Different grades of insulating firebrick are manufactured according to international standards, and are suitable to operate in various temperatures and atmospheres up to 3000°F. Excellent Features of Insulating Firebrick are listed at the lower right side of this page.

For higher temperature insulation, we also distribute Alumina Bubble Bricks for higher hot strengths.

Call KT Refractories at 1-877-365-2995 to order Insulating Firebrick (IFB) today!

Or buy online today:

Insulating Fire Bricks Data Chart:

Item

Classification Temperature

Bulk Density

Cold Crushing Strength

Modulus of Rupture

Permanent Linear Contract

Thermal Conductivity (W/m.k)

400°C

600°C

800°C

1000°C

1200°C

KT-HMQ series Insulating Fire Bricks

KT-HMQ-23

1260°C

/2300°F

0.48g/cm³

1 MPa

0.9 MPa

1230°C

24h
-0.1%

0.13

0.15

0.17

0.19

----

KT-HMQ-26

1430°C

/2600°F

0.79/cm³

1.5 MPa

1.0 MPa

1400°C

24h
-0.2%

0.25

0.27

0.30

0.33

0.35

KT-HMQ-28

1540°C

/2800°F

0.89/cm³

2.0 MPa

1.5 MPa

1510°C

24h
-0.4%

0.30

0.32

0.34

0.36

0.38

KT-HMQ-30

1650°C

/3000°F

1.02/cm³

2.5 MPa

1.8 MPa

1620°C

24h
-0.7%

0.37

0.39

0.42

0.45

0.48

KT-JM series Insulating Fire Bricks

KT-JM23

1260°C

/2300°F

0.60g/cm³

1.2 MPa

0.9 MPa

1230°C

24h
-0.1%

0.17

0.19

0.22

0.25

---

KT-JM26

1430°C

/2600°F

0.8/cm³

2.4 MPa

1.5 MPa

1400°C

24h
-0.5%

0.24

0.27

0.30

0.33

---

KT-JM28

1540°C

/2800°F

0.89/cm³

2.6 MPa

1.6 MPa

1510°C

24h
-0.8%

0.30

0.32

0.35

0.38

0.39

KT-JM Series of Insulating Fire Brick Data Details:

Description	KT-JM23	KT-JM26	KT-JM28	KT-JM30
Chemical Composition (%)
Al2O3	42	56	67	73
SiO2	55	41	30	24
Fe2O3	≤1	≤0.8	≤0.7	≤0.7
K2O + Na2O	1.1	1.7	1.7	1.7
Physical Properties
Density (kg/m3)	600	800	900	1000
Classification Temperature (°C)	1300	1400	1500	1550
Cold Crushing Strength (MPa)	1.2	1.8	2.5	3.3
Modulus of Rupture (MPa)	1	1.7	2.3	3.1
Permanent Linear Change (%) x 24 hrs	≤0.6	≤0.6	≤0.8	≤0.9
Thermal Expansion (%) 1000°C	0.5	0.52	0.52	0.53
Thermal Conductivity (W/mK)
350°C	0.18	0.25	0.33	0.38
400°C	0.2	0.29	0.35	0.4
600°C	0.24	0.32	0.37	0.42
800°C/1472°F	0.22	0.30	0.35
1000°C/1832°F	0.25	0.32	0.38

Excellent Features

High heat resistance and durability

Excellent insulating properties

Excellent resistance to thermal shock

Low thermal conductivity

Low heat storage

Excellent construction/compressive strength

Particularly suited to high temperature applications above 1600°C or 2800°F

Structural integrity can withstand erosive and abrasive environments

Low impurity

Precise dimensions

Typical Applications of IFB:

Glass Industries

Ceramics Industries

Electrolytic Aluminum Industries

Iron and Steel Industries

Non-Ferrous Metals Industries

Power Generation Industries

Primary hot surface linings

Sulfur recovery equipment

Cracking furnace, conversion furnace

Heating equipment, heating furnace, even-heating furnace, heat-processing furnace

KT Refractories US Company

Insulating Fire Bricks

Insulating Fire Bricks Data Chart:

KT-JM Series of Insulating Fire Brick Data Details:

Excellent Features

Typical Applications of IFB:

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