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SOFT BRICKS or Insulating Firebrick

Zetner KilnORDER YOUR BRICKS NOW FOR SPRING KILN BUILDING PROJECTS And Save !!!
Refractory shapes include precast cement and fused or sintered refractory products that are formed prior to installation in furnaces, boilers or other high temperature equipment.  Refractories are hard, heat resistant materials and products such as alumina, silicon carbide, fire clay, bricks, precast shapes, cement or monolithics and ceramic kiln furniture.  Ceramics and refractories have high melting points are suitable for applications requiring wear resistance, high temperature strength, electrical or thermal insulation or other specialized characteristics.

R
efractory
bricks, blocks, and tiles are stacked to form insulating furnaces, boilers or other thermal process vessel walls.  The bricks are usually cemented together with refractory mortar.


Shown right is a new gas kiln made with G series soft bricks from Sheffield Pottery by John Zetner of New Hampshire Potters Guild.

Please note:
BRICKS SHIPPED UPS GROUND CARRY A $0.50 /BRICK PACKING FEE AND A $3.00 MINIMUM PACKING FEE.

  • Bricks carry a $0.50 per brick double box safe packing fee when going UPS.
  • There is a $3.00 minimum on this packing fee.
  • ie. 1-6 bricks carry a flat $3.00 packing fee. Add $0.50 per brick for 7+ bricks.
  • NOTE: This does not apply to large quantities of bricks which ship palletized via our truck or common carrier.

Discounts apply for orders over 500 bricks.



INSULATING BRICKS/SOFT BRICKS 2 1/2  
CHOOSE SOFT BRICKS FOR INDOOR OR WELL COVERED AREAS
Note: Soft bricks can be cut down with an ordinary cartpenter's hand saw to create custom shapes where you need them.
Discounts will be applied to orders of over 500 bricks according to schedule below:
ITEM CODE     BRICK     <500     >500      
STRAIGHTS 9 X 4 1/2 X 2 1/2              
NC20               G-20            
NC23               G-23     Call for 500 brick Discounts     
NC26               G-26            
NC28               G-28            
WEDGES AND ARCHES**              
NC20W/NC20A   G-20          
NC23W/NC23A   G-23   Call for 500 brick Discounts        
NC26W/NC26A   G-26          
NC28W/NC28A   G-28          

SOFT BRICKS 3              

STRAIGHTS 9 X 4 1/2 X 3              
NC203              G-20-3          
NC233              G-23-3   Call for 500 brick Discounts       
NC263              G-26-3          
NC283              G-28-3          
WEDGES AND ARCHES**              
NC203W/NC203A G-20-3        
NC233W/NC233A G-23-3  Call for 500 brick Discounts      
NC263W/NC263A G-26-3        
NC283W/NC283A G-28-3        
** Wedges and Arches must be specified by number. 

  



Insulating Fire Brick Technical Data     Data Updated 05/10/06
Typical Data
STANDARD ASTM C 155 GRADES
Grade
NC-20
NC-23
NC-26
NC-28
Temperature Use Limit
(normal oxidizing atmosphere)
F
2000
2300
2600
2800
Density, Avg.
ASTM C 134
lb/ft3
35
36
46
55
lb/BEq
2.0
2.1
2.7
3.2
Modulus of Rupture
ASTM C 133
lb/in2
90
110
175
210
Cold Crushing Strength
ASTM C 133
lb/in2
105
145
220
250
Permanent Linear Change
ASTM C 210
%

24 hrs at soaking temp: F

  1950

0.0

  2250

0.0

  2450

  2550

-0.6

  2750

-1.6
  2950
Thermal Conductivity
ASTM C 182
Btu-in/ft2, F

Temperature: F

  500

1.3
1.3
1.7
2.0

  1000

1.4
1.4
1.8
2.2

  1500

1.6
1.6
1.9
2.3

  2000

n/a
1.8
2.1
2.5

Chemical Analysis
ASTM C 182

%

  Alumina - Al2O3

32.1
32.1
35.4
46.8

  Silica - SiO2

64.3
64.3
61.2
50.9

  Ferris Oxide - Fe2O3

0.9
0.9
0.9
0.8

  Titanium Oxide - TiO2

1.7
1.7
1.6
1.7

  Calcium Oxide - CaO

0.1
0.1
0.1
0.1

  Magnesium Oxide - MgO

0.2
0.2
0.1
0.1

  Alkalies, as Na2O & K2O

0.7
0.7
0.7
0.4



Note: there are no drawings of the 3 inch series bricks so here are the dimensions:
3 inch brick dimensions 

 

 

  SOFT BRICKS
 

TEMP--->

 

G20/

2000

G23/

2300

G26/

2600

G28/

2800

Shape

Size in Inches

         
Straits
2.5   NC20 NC23 NC26 NC28
3   NC203 NC233 NC263 NC283
Wedge #1
2.5   NC20W1 NC23W1 NC26W1 NC28W1
3   NC203W1 NC233W1 NC263W1 NC283W1
Arch #1
2.5   NC20A1 NC23A1 NC26A1 NC28A1
3   NC203A1 NC233A1 NC263A1 NC283A1
Arch #2
2.5   NC20A2 NC23A2 NC26A2 NC28A2
3   NC203A2 NC233A2 NC263A2 NC283A2
Arch #3
2.5          
3          
Soaps
2.5          
3          
Side Skews
2.5          
3          
Feather Edge

2.5          
3          
Splits

2.5          
3          

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NC23: G-23 SOFTBRICK-STRAIGHTS
Nc23: G-23 Softbrick-Straights
Our Price: $3.66

NC23: G-23 SOFTBRICK-STRAIGHTS
NC26: G-26 SOFTBRICK STRAIGHTS
Nc26: G-26 Softbrick Straights
Our Price: $3.89

NC26: G-26 SOFTBRICK STRAIGHTS
NC233: G-23 SOFTBRICK STRAIGHTS-3"
Nc233: G-23 Softbrick Straights-3"
Our Price: $3.99

NC233: G-23 SOFTBRICK STRAIGHTS-3"
NC23A1: G-23 SOFTBRICK ARCHES #1
Nc23A1: G-23 Softbrick Arches #1
Our Price: $4.27

NC23A1: G-23 SOFTBRICK ARCHES #1
NC23A2: G-23 SOFTBRICK ARCH #2
Nc23A2: G-23 Softbrick Arch #2
Our Price: $4.27

NC23A2: G-23 SOFTBRICK ARCH #2
NC23W1: G-23 SOFTBRICK WEDGES #1
Nc23W1: G-23 Softbrick Wedges #1
Our Price: $4.27

NC23W1: G-23 SOFTBRICK WEDGES #1
NC28: G-28 SOFTBRICK STRAIGHTS
Nc28: G-28 Softbrick Straights
Our Price: $4.44

NC28: G-28 SOFTBRICK STRAIGHTS
NC26A1: G-26 SOFTBRICK ARCHES #1
Nc26A1: G-26 Softbrick Arches #1
Our Price: $4.50

NC26A1: G-26 SOFTBRICK ARCHES #1
NC26A2: G-26 SOFTBRICK ARCH #2
Nc26A2: G-26 Softbrick Arch #2
Our Price: $4.50

NC26A2: G-26 SOFTBRICK ARCH #2
NC26W1: G-26 SOFTBRICK WEDGES #1
Nc26W1: G-26 Softbrick Wedges #1
Our Price: $4.50

NC26W1: G-26 SOFTBRICK WEDGES #1
NC233A1: G-23 SOFTBRICK ARCH 3" #1
Nc233A1: G-23 Softbrick Arch 3" #1
Our Price: $4.60

NC233A1: G-23 SOFTBRICK ARCH 3" #1
NC233A2: G-23SOFTBRICK ARCHES 3" #2
Nc233A2: G-23Softbrick Arches 3" #2
Our Price: $4.60

NC233A2: G-23SOFTBRICK ARCHES 3" #2
NC233W1: G-23 SOFTBRICK WEDGE 3" #1
Nc233W1: G-23 Softbrick Wedge 3" #1
Our Price: $4.60

NC233W1: G-23 SOFTBRICK WEDGE 3" #1
NC263: G-26 SOFTBRICK STRAIGHTS 3"
Nc263: G-26 Softbrick Straights 3"
Our Price: $4.69

NC263: G-26 SOFTBRICK STRAIGHTS 3"
NC28A1: G-28 SOFTBRICK ARCH #1
Nc28A1: G-28 Softbrick Arch #1
Our Price: $5.05

NC28A1: G-28 SOFTBRICK ARCH #1
NC28A2: G-28 SOFTBRICK ARCH #2
Nc28A2: G-28 Softbrick Arch #2
Our Price: $5.05

NC28A2: G-28 SOFTBRICK ARCH #2
NC28W1: G-28 SOFTBRICK WEDGE #1
Nc28W1: G-28 Softbrick Wedge #1
Our Price: $5.05

NC28W1: G-28 SOFTBRICK WEDGE #1
NC263A1: G-26 SOFTBRICK ARCH 3" #1
Nc263A1: G-26 Softbrick Arch 3" #1
Our Price: $5.31

NC263A1: G-26 SOFTBRICK ARCH 3" #1
NC263A2: G-26 SOFTBRICK ARCHES 3" #2
Nc263A2: G-26 Softbrick Arches 3" #2
Our Price: $5.31

NC263A2: G-26 SOFTBRICK ARCHES 3" #2
NC263W1: G-26 SOFTBRICK WEDGE 3" #1
Nc263W1: G-26 Softbrick Wedge 3" #1
Our Price: $5.31

NC263W1: G-26 SOFTBRICK WEDGE 3" #1
NC283: G-28 SOFTBRICK STRAIGHTS 3"
Nc283: G-28 Softbrick Straights 3"
Our Price: $5.84

NC283: G-28 SOFTBRICK STRAIGHTS 3"
NC283A1: G-28 SOFTBRICK ARCHES 3" #1
Nc283A1: G-28 Softbrick Arches 3" #1
Our Price: $6.45

NC283A1: G-28 SOFTBRICK ARCHES 3" #1
NC283A2: G-28 SOFTBRICK ARCHES 3" #2
Nc283A2: G-28 Softbrick Arches 3" #2
Our Price: $6.45

NC283A2: G-28 SOFTBRICK ARCHES 3" #2
NC283W1: G-28 SOFTBRICK WEDGE 3" #1
Nc283W1: G-28 Softbrick Wedge 3" #1
Our Price: $6.45

NC283W1: G-28 SOFTBRICK WEDGE 3" #1
   
 
Soft Bricks or Insulating Firebrick from Sheffield Pottery Ceramic Supply
Sheffield-Pottery.com
Route 7
P.O. Box 399
Sheffield, MA
01257
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