PA Grade IFB

The PA Grade of insulating fire brick (IFB) adds a lower cost alternative to BNZ’s traditional line of IFB. The PA series is designed for applications where the lower density and finer texture of the standard BNZ grades is not required. They meet or exceed the specifications of ASTM C 155 for each listed grade, and are produced under BNZ’s certified ISO 9001 Quality System.

Insulating Fire Brick Plant Location

Zelienople
191 Front Street
Zelienople, PA 16063
Phone: 724-452-8650 2550 (1399)
800-955-8650
FAX: 724-452-1346

[

download the PA data sheet]
[

download the PA SDS]

PA 20

PA-20 is a low density brick suitable for applications where low conductivity and low thermal mass are required. Typical applications are batch furnaces and low temperature shuttle kilns where minimum heat storage is important.[/fusion_builder_column_inner]

PA 23

PA-23 features higher cold crushing strength than the PA-20. With its low reheat shrinkage, it is especially well suited for applications such as annealing and reheating furnaces

PA 26

PA-26 blends excellent density, strength and temperature stability with low conductivity, making it ideal as backup insulation in reheat and forge furnaces.


Typical Data		PA SERIES
		PA 20	PA 23	PA 26
ASTM Classification		20	23	26
Temperature Use Limit	°F °C	2000	2300	2600
(Normal oxidizing atmosphere)	°F °C	(1093)	(1260)	(1427)
Density ASTM C 134	lb/ft² kg/m³ lb/BEq	39 (625) 2.3	44 (705) 2.6	49 (785) 2.5
Modulus of Rupture ASTM C 133	psi kg/cm²	85 (6.0)	115 (8.0)	180 (12.0)
Cold Crushing of Strength ASTM C 133	psi kg/cm²	95 (7.0)	140 (10.0)	240 (17.0)
Permanent Linear Change	%
ASTM C 210
24 hrs at soaking temp: °F (°C)
2250 (1232)		-0.0	-0.0	–
2550 (1399)		–	–	-0.9
Reversible Linear Thermal Expansion at 2000°F (1093°C)	%	0.06	0.06	0.6
Hot Load Strength	%
ASTM C 16	deformation
10 psi load for 11/2 hours: °F (°C)
2000 (1093)		-0.5	-0.5	–
2200 (1204)		–	–	-0.2
Maximum Mean Temperature °F		1800	2100	2200
Thermal Conductivity	Btu-in/ft², hr, °F
ASTM C 182	(W/mk)
Mean temperature, °F (°C)
500 (260)		1.4 (0.20)	1.6 (0.23)	2.1 (0.30)
1000 (538)		1.8 (0.26)	2.0 (0.29)	2.4 (0.35)
1500 (816)		2.2 (0.32)	2.4 (0.35)	2.7 (0.39)
2000 (1093)		2.4 (0.35)	2.6 (0.37)	2.9 (0.42)
To convert Btu-in/ft², hr, °F to Kcal-m², hr, °C, multiply by 0.124.
Chemical Analysis
Alumina – Al2O3		42.5	42.5	40.1
Silica – SiO2		51.5	51.5	57.0
Ferric Oxide – Fe2O3		0.7	0.7	0.7
Titanium Oxide – Ti2O2		1.5	1.5	1.5
Calcium Oxide – CaO		2.5	2.5	0.3
Magnesium Oxide – MgO		0.1	0.1	0.1
Alkalies, as Na2O & K2O		1.0	1.0	0.4

Disclaimer:

BNZ Materials warrants that its products are manufactured in accordance with its applicable material specifications and are free from defects in workmanship and materials using BNZ’s specifications as a standard. Every claim under this warranty shall be deemed waived unless in writing and received by BNZ within thirty (30) days of the date the defect was discovered and within one (1) year of the date of the shipment of the product.