| Category | Muffle Furnace |
| Model | Box Kiln |
| Max Temperature | 1000°C (1832°F) |
| Working Temperature | 900°C |
| Thermocouple Type | N (Nicrosil-Nisil) |
| Thermocouple Details | Inconel 600 sheath, 6mm diameter, Type N, Tolerance Class 2, 0 to +1100°C range, MgO insulated mineral |
| Heating Element | Kanthal A1 (FeCrAl) |
| Element Details | Max temp: 1425°C, Superior cyclic performance, FeCrAl alloy with rare earth elements |
| Chamber (MM) | 420 x 420 x 800 |
| Outer Body (MM) | 835.0 x 1030.0 x 1090.0 |
| Chamber Volume | 141.1 Litres |
| Volume (cu.ft) | 33.7 ft³ |
| Power Load | 21.32 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 288.96 kg |
| Chamber Shape | Square |
This kiln features a box-shaped design, providing a straightforward and efficient chamber for firing ceramics, glass, or enamel. Operating temperatures can reach 900°C or higher, suitable for bisque and glaze firings. The working principle is similar to a box furnace, with heating elements surrounding an insulated brick chamber and a heavy door for heat retention. Its purpose is to offer consistent, controllable firing for potters and artists, accommodating shelves of ware. It is a standard design in educational studios, small-scale production potteries, and for firing technical ceramics due to its even heat distribution.
Equivalent chamber references: 420 x 420 x 800 MM, 42 x 42 x 80 CM and 16 x 16 x 32 INCH. Buyers searching for 1000 Degree Celsius Box Kiln 420 x 420 x 800 MM chamber; 1000°C Box Kiln 420 x 420 x 800 MM; 1000 Degree Celsius Box Kiln 42 x 42 x 80 CM chamber; 1000°C Box Kiln 42 x 42 x 80 CM; 1000 Degree Celsius Box Kiln 16 x 16 x 32 INCH chamber; 1000°C Box Kiln 16 x 16 x 32 INCH can verify the same physical chamber on this canonical product page before requesting price, GST invoice, packaging and delivery.
Trutherm manufactures 1000 Degree Celsius (1000°C) Box Kiln 420 x 420 x 800 MM Chamber for buyers who search by exact machine type, chamber size and 1000°C temperature rating. This page is specific to the MM dimension version, so the chamber size is presented in the unit normally used in the buyer's drawing, tender or purchase request.
This configuration is suitable when the sample load must fit a 420 x 420 x 800 MM chamber with usable chamber volume of 141.1 litre, approximate power load of 21.4 kW, square chamber profile. It is commonly selected for laboratory, QC, metallurgical, ceramic, pharmaceutical and industrial heat-treatment work requiring stable heating and repeatable process conditions. Typical use includes annealing, tempering, hardening and general heat-treatment of metal and ceramic parts in tool rooms, forge shops and QC labs.
Heat-treatment cycles such as annealing and tempering depend on a stable soak temperature, and the muffle-lined box chamber isolates the workpiece from direct flame or element contact for even heating.
Because the chamber geometry is simple, box furnaces are typically the most cost-effective furnace type per litre of usable volume, which is why they remain the default choice for general heat treatment.
Compared to a tube or ashing furnace, this box (chamber) furnace gives the largest usable loading footprint for its outer size, so it suits irregularly shaped parts, trays and multiple crucibles better than a cylindrical or vent-style chamber.