We offer high quality, American Made BNZ soft insulating fire bricks.
The prices shown for individual IFB bricks are for smaller quantities (fewer than 500) shipping from our Sheffield MA warehouse and for in-store pick-up. Larger quantities which will ship on pallets direct ex-works carry significant discounts so please call or email for a quote. We carry three temperature ratings (2300, 2600, and 2800 degree) and two grades : PA and BNZ grades The 2300 degree soft insulating fire bricks are available in the PA grade. The 2600 and the 2800 degree rated IFB bricks are available in the excellent but economical PA grade or the high grade BNZ grade.
IFB (Insulating fire bricks) also known as Soft Bricks are high temperature, lightweight refractories which are used as insulation in kilns, forges and furnaces. Many furnaces and kilns will require a combination of Soft Brick and Dense firebrick. We also stock castable dense and insulating refractories (Litewate and Loucast). Casatable refractories are great problem solvers whether constructing or repairing. We stock insulating Kaowool blanket and insulating high temp board as well as mortar and kiln cement.
Gas and electric powered kilns and furnaces can use the soft insulating fire brick in the firebox. Wood and oil burning kilns are constructed with hard-brick (dense firebrick.) They are then insulated with these IFB. Salt kilns and other applications which create corrosive atmosphere will also need to use dense firebrick (hard brick) in the firebox and use the IFB outside. Coal burning power plants often use specialized brick such as Silicon Carbide brick to resist the abrasive atmospheres there.
Picking the correct IFB bricks and other refractories for your application is crucial, so please email us or call to let us help you pick the correct refractories for your project or repair.
From a back yard forge or oven to full scale coal burning power pants Sheffield Pottery has the materials you need!
Sheffield bricks and refractories are used in salt kilns, train kilns, tunnel kilns, Anagama kilns, gas kilns, furnaces, and ovens coast to coast.
Call today to get started with your build or repair. 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.
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. Refractory
bricks, blocks, and tiles are stacked to form insulating furnaces,
boilers or other thermal process vessel walls. The soft bricks are usually cemented together with refractory mortar. Please note:
Most kilns, ovens and furnaces utilize a combination of several types of fire-brick and refractories. Feel free to email or give us a call if you need help selecting the correct bricks for your application.
Please note: BRICKS SHIPPED UPS GROUND CARRY A $0.75 /BRICK PACKING FEE AND A $5.00 MINIMUM PACKING FEE.
Bricks carry a $0.75 per brick double box safe packing fee when going UPS.
There is a $5.00 minimum on this packing fee.
ie. 1-6 bricks carry a flat $5.00 packing fee. Add $0.75 per brick for 7+ bricks.
NOTE: This does not apply to large quantities of bricks which ship palletized via our truck or common carrier.
Call to special order any firebrick sizes not shown. Discounts are available when ordering 500 or more fire 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 carpenter'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 Call for 500 brick Discounts
STRAIGHTS 9” X 4 1/2” X 2 1/2”
WEDGES AND ARCHES** Call for 500 brick Discounts
SOFT BRICKS 3” STRAIGHTS 9” X 4 1/2” X 3”
Call for 500 brick Discounts
WEDGES AND ARCHES**
NC233W/NC233A G-23-3 Call for 500 brick Discounts
** Wedges and Arches must be specified by number.
ASTM C 155 GRADES
(normal oxidizing atmosphere)
ASTM C 134
ASTM C 133
ASTM C 133
ASTM C 210
hrs at soaking temp: °F
ASTM C 182
ASTM C 182
Oxide - Fe2O3
Oxide - TiO2
Oxide - CaO
Oxide - MgO
as Na2O & K2O
Note: there are no drawings of the 3 inch series bricks so here are the dimensions: