Feature Batts, Plates, Tiles and Shelves

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GENERAL OVERVIEW

Feature batts, plates, tiles and shelves are used to support ware in the kilns and furnaces during firing and heat treatment. They can come with a range of features which cut into the batt (such as holes, slots, or recesses) or which slightly protrude out of the batt surface (such as grooves or pads). They can also be manufacturers to specific shapes, allowing them to support specific products during the firing process. They are useful in a range of industries, such as powder metallurgy.

Perforated batts (batts with many holes through them) are often used to reduce weight or improve heat transfer during firing. Recessed batts (batts with recesses carved into them) can locate product on the batt, standardising product placement and preventing movement. Cast batts are smoother and harder than traditional batts, resisting abrasion from kiln rollers and reducing the production of kiln dirt. These features are often bespoke and built around the customer’s specific requirements.

TECHNICAL INFORMATION

Feature Batts, Plates, Tiles and Shelves
General Information
Material Grade	Standard	Improved Surface	Fast Firing
Max Usage Temp.	1300 °C / 2372 °F	1300 °C / 2372 °F	1300 °C / 2372 °F
Typical Physical Properties
Bulk Density	1.85 g/cm³	2.00 g/cm³	2.00 g/cm³
Apparent Porosity	28 %	26 %	23 %
MoR @ 20°C	15 MPa	15 MPa	13 MPa
MoR @ 1250°C	13 MPa	16 MPa	15 MPa
CTE 20 – 1000 °C	2.4 x10^-6/K	2.8 x10^-6/K	2.2 x10^-6/K
Specific Heat @ 20°C	1.0 kJ/kg.K	1.0 kJ/kg.K	1.0 kJ/kg.K
Typical Chemical Analysis
Al₂O₃	37	45	41
SiO₂	50	45	48
MgO	8	6.5	7

Cast Batts, Plates, Tiles and Shelves
General Information
Material Grade	Cast (Saggar Material)	Cast (Standard Quality)	Cast (Enhanced Quality)	Cast (Thermal Shock Resistant)
Max Usage Temp.	1200 °C / 2192 °F	1250 °C / 2282 °F	1250 °C / 2282 °F	1250 °C / 2282 °F
Typical Physical Properties
Bulk Density	2.0 g/cm³	1.9 g/cm³	1.9 g/cm³	1.8 g/cm³
Apparent Porosity	24 %	27 %	29 %	32 %
MoR @ 20°C	12 MPa	15 MPa	30 MPa	16 MPa
MoR @ 1250°C	13 MPa	15 MPa	25 MPa	15 MPa
CTE 20 – 1000 °C	2.4 x10^-6/K	2.5 x10^-6/K	2.8 x10^-6/K	1.8 x10^-6/K
Specific Heat @ 20°C	1.0 kJ/kg.K	1.0 kJ/kg.K	1.0 kJ/kg.K	1.0 kJ/kg.K
Typical Chemical Analysis
Al₂O₃	43	42	38	44
SiO₂	47	47	51	44
MgO	7	7.5	8	10