Insulating Firebrick Specification
SP Group
SP Group is greatest thermal insulation by lightweightization to limit.
Brand Name
| Temperature at which reheat shrinkage is not more than 0.5% (℃)
| Bulk
Density | Crushing Strength (MPa)
| Thermal
Conductivity (W/m·K)at350±10℃ |
SP13
| 1300
| under 0.45
| over 1.0
| under 0.17
|
SP14
| 1400
| under 0.50
| over 1.0
| under 0.20
|
SP15
| 1500
| under 0.55
| over 1.0
| under 0.21
|
SP155
| 1550
| under 0.60
| over 1.5
| under 0.22
|
SP160
| 1600
| under 0.65
| over 1.5
| under 0.24
|
SP165
| 1650
| under 0.70
| over 1.5
| under 0.26
|
RA Group
RA group is lightweight, has few impurities, excellent in thermal stability, and can be used for open flame.
Brand Name
| Temperature at which reheat shrinkage is not more than 0.5% (℃)
| Bulk
Density | Crushing Strength (MPa)
| Modulus of Rupture(MPa)
| Thermal
Conductivity (W/m·K) at350±10℃ | Fe2O3(％)
|
RA12
| 1200
| under 0.50
| over 0.8
| over 0.6
| under 0.18
| under 1.2
|
RA13
| 1300
| under 0.55
| over 1.0
| over 0.8
| under 0.19
| under 1.2
|
RA14
| 1400
| under 0.70
| over 2.0
| over 1.0
| under 0.24
| under 1.0
|
RA15
| 1500
| under 0.75
| over 2.0
| over 1.0
| under 0.27
| under 1.0
|
RA155
| 1550
| under 0.85
| over 3.0
| over 1.0
| under 0.32
| under 1.0
|
RA165
| 1650
| under 0.90
| over 3.0
| over 1.0
| under 0.38
| under 1.0
|
RA180
| 1800
| under 1.30
| over 7.0
| -
| under 0.73
| under 1.0
|
RB Group
RB Group has intensity more than same characteristic as RA Group.
Brand Name
| Temperature at which reheat shrinkage is not more than 0.5% (℃)
| Bulk
Density
| Crushing Strength (MPa)
| Modulus of Rupture(MPa)
| Thermal
Conductivity (W/m·K) at350±10℃ | Fe2O3(％)
|
RB13
| 1300
| under 0.80
| over 3.0
| over 1.0
| under 0.26
| under 1.2
|
RB14
| 1400
| under 0.90
| over 4.0
| over 1.5
| under 0.30
| under 1.0
|
RB15
| 1500
| under 1.00
| over 4.0
| over 1.5
| under 0.35
| under 1.0
|
RB155
| 1550
| under 1.00
| over 4.0
| over 1.5
| under 0.40
| under 1.0
|
RB165
| 1650
| under 1.20
| over 6.0
| over 2.0
| under 0.53
| under 1.0
|
RB180
| 1800
| over 1.40
| over 9.0
| -
| under 0.82
| under 1.0
|
RB-H Group
Strength more than RB Group.
Brand Name
| Temperature at which reheat shrinkage is not more than 0.5% (℃)
| Bulk
Density | Crushing Strength (MPa)
| Modulus of Rupture(MPa)
| Thermal
Conductivity (W/m·K) at350±10℃ |
RB13
| 1300
| under 0.90
| over 6.0
| over 2.0
| under 0.32
|
RB14H
| 1400
| under 1.10
| over 8.0
| over 2.0
| under 0.40
|
RB15H
| 1500
| under 1.20
| over 9.0
| over 2.0
| under 0.52
|
LE Group
LE Group is good for thermal spalling resistance in lining use.
Brand Name
| Temperature at which reheat shrinkage is not more than 0.5% (℃)
| Bulk
Density | Crushing Strength (MPa)
| Thermal
Conductivity (W/m·K) at350±10℃ | Fe2O3(％)
|
LE13
| 1300
| under 0.80
| over 2.0
| under 0.28
| under 1.0
|
LE14
| 1400
| under 0.90
| over 2.5
| under 0.33
| under 1.0
|
LE17
| 1700
| under 1.25
| over 6.0
| under 0.67
| under 1.0
|
TD Group
TD group combines thermal insulation and intensity.
Brand Name
| Temperature at which reheat shrinkage is not more than 0.5% (℃)
| Bulk
Density | Crushing Strength (MPa)
| Thermal
Conductivity (W/m·K) at350±10℃ |
TD13
| 1300
| under 0.50
| over 3.0
| under 0.19
|
TD14
| 1400
| under 0.55
| over 3.0
| under 0.22
|
G Group
G group reduces impurities, such as iron, as much as possible, and suitable for use in atmosphere.
Brand Name
| Temperature at which reheat shrinkage is not more than 0.5% (℃)
| Bulk
Density | Crushing Strength (MPa)
| Thermal
Conductivity (W/m·K) at350±10℃ | Fe2O3(％)
|
RA13G
| 1300
| under 0.55
| over 1.0
| under 0.19
| under 0.5
|
RB13G
| 1300
| under 0.80
| over 3.0
| under 0.26
| under 0.5
|
A Group
A group is lightweight, thermal insulation is high, but intensity is small.
Brand Name
| JIS Classification
| Temperature at which reheat shrinkage is not more than ±2% (℃)
| Bulk
Density
| Thermal
Conductivity (W/m·K) at600±10℃ |
A1
| 900-0.50-0.23
| 900
| under 0.50
| under 0.23
|
A2
| 1000-0.50-0.24
| 1000
| under 0.50
| under 0.24
|
A4
| 1200-0.55-0.32
| 1200
| under 0.55
| under 0.32
|
A5
| 1300-0.60-0.34
| 1300
| under 0.60
| under 0.34
|
A6
| 1400-0.70-0.36
| 1400
| under 0.70
| under 0.36
|
A7
| 1500-0.75-0.38
| 1500
| under 0.75
| under 0.38
|
B Group
B group is a little heavy, combines intensity and thermal insulation.
Brand Name
| JIS Classification
| Temperature at which reheat shrinkage is not more than ±2% (℃)
| Bulk
Density
| Thermal
Conductivity (W/m·K) at600±10℃ |
B1
| 900-0.70-0.26
| 900
| under 0.70
| under 0.26
|
B2
| 1000-0.70-0.28
| 1000
| under 0.70
| under 0.28
|
B4
| 1200-0.80-0.37
| 1200
| under 0.80
| under 0.37
|
B5
| 1300-0.80-0.39
| 1300
| under 0.80
| under 0.39
|
B6
| 1400-0.90-0.42
| 1400
| under 0.90
| under 0.42
|
B7
| 1500-1.00-0.50
| 1500
| under 1.00
| under 0.50
|
C Group
C group is used for the place which requires load.
Brand Name
| JIS Classification
| Temperature at which reheat shrinkage is not more than ±2% (℃)
| Bulk
Density
| Thermal
Conductivity (W/m·K) at600±10℃ |
C1
| 1300-1.10-0.50
| 1300
| under 1.10
| under 0.50
|
C2
| 1400-1.20-0.60
| 1400
| under 1.20
| under 0.60
|
C3
| 1500-1.25-0.68
| 1500
| under 1.25
| under 0.68
|
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