� FILENAME WHYTHEAT A ( M)�

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PRODUCT DATA

HIGH PURITY DENSE CASTABLES

PRODUCT: WHYTHEAT A (M)

TYPE: 85 % ALUMINA DENSE CASTABLE

NATURE OF BOND: HYDRAULIC

INSTALLATION : VIBRATION CASTING

GENERAL PROPERTIES

RAW MATERIAL BASE : BTA & CALCINED DIASPORE

MAX. SERVICE TEMPERATURE : 1700 C MAXIMUM GRAIN SIZE : 5 mm

WATER REQUIRED FOR CASTING: 9.0 - 10.5 %

REVERSIBLE THERMAL EXPANSION: 0.75 % at 1000 C

CHEMICAL ANALYSIS, %

TYPICAL VALUE

SPECIFICATION

Al2O3 85.50 85.00

SiO2 5.10 -

Fe2O3 1.30 1.50 max.

TiO2 2.00 - CaO 5.50 -

LOI 0.30 -

PHYSICAL PROPERTIES TYPICAL VALUE SPECIFICATION Dry density, g / cc

after drying at 110 ºC / 24 hrs

2.78

2.75 min

CCS, kg/cm2

after drying at 110 ºC / 24 hrs

after heating at 800 ºC / 3 hrs

after heating at 1100 ºC / 3 hrs

after heating at 1550 ºC / 3 hrs

650

450

380

600

600 min.

-

-

-

MOR, kg/cm2

after drying at 110 ºC / 24 hrs

after heating at 800 ºC / 3 hrs after heating at 1100 ºC / 3 hrs

after heating at 1550 ºC / 3 hrs

85

60 45

100

-

- -

-

% Retained on maximum size 1 5 max.

THERMAL PROPERTIES

TYPICAL VALUE SPECIFICATION Refractoriness, Orton/ºC + 36 / + 1804 36 / 1804 min.

PLC, %

after heating at 800 ºC / 3 hrs

after heating at 1100 ºC / 3 hrs

after heating at 1550 ºC / 3 hrs

- 0.12

- 0.18

- 0.80

-

-

1.00 max. Thermal Conductivity, cal/m/hr/ºC

at 400 ºC HF

at 600 ºC HF

at 800 ºC HF

1.05

1.10

1.15

-

-

-

Packaging : 25 kg bags Storage life : 9 months Delivery state : dry