Technical Specification of Super Heat Duty Bricks
Product code	AL2O3 %	Fe2O3 %	PCE Orton	AP %	BD gm/cc	CCS kg/cm	RUL Ta°C	PLCAR at °C	For 2 hrs %	Characteristics & Use
AR-42	42	2.0	33	2.3	2.1	250	1450	1450	0.8	Suitable for general applications.
AR-42D	42	2.0	33	20	2.2	300	1450	1450	0.5	Dense, spall resistant.Suitable for general applications.
AR-42AR	42	1.5	33	18	2.2	450	1470	1450	0.4	Dense, high abrasion resistant, resistant to carbon monooxide attack.
AR-42SD	42	1.5	33	16	2.3	500	1470	1450	0.3	Dense, resistant to high abrasion , resistant to carbon monooxide attack, Suitable for special applications.
AR-45	45	1.5	33	23	2.2	300	1450	1450	0.5	Suitable for general applications.
AR-45D	45-48	1.5	34	18	2.3	450	1480	1480	0.5	Dense, volume stable, suitable for blast furnace, hearth and lower and upper stacks.

Note
The above data relates to standard sized, machine pressed bricks only.For bigger & pneumatically rammed shapes, results may vary. General size tolerance will be 1.5% or 2mm whichever is greater.

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