| Category | Muffle Furnace |
| Model | High Temperature Box Furnace |
| Max Temperature | 1200°C (2192°F) |
| Working Temperature | 1100°C |
| Thermocouple Type | S (Platinum-10% Rhodium) |
| Thermocouple Details | High purity alumina insulation, Platinum sheath, 6mm diameter, Type S, Tolerance Class 2, 0 to +1450°C range |
| Heating Element | Kanthal A1 (FeCrAl) |
| Element Details | FeCrAl alloy with rare earth elements, Max temp: 1425°C, Superior cyclic performance |
| Chamber (MM) | 390 x 765 x 390 |
| Outer Body (MM) | 805.0 x 1380.0 x 665.0 |
| Chamber Volume | 116.4 Litres |
| Volume (cu.ft) | 27.5 ft³ |
| Power Load | 20.47 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 233.11 kg |
| Chamber Shape | Rectangular - tall |
Trutherm High Temperature Box Furnace models combine box chamber usability with high-temperature capability for laboratories, ceramic work, metallurgy and industrial testing.
This configuration is suitable when the sample load must fit a 390 x 765 x 390 MM chamber with usable chamber volume of 116.4 litre, approximate power load of 19.8 kW, rectangular - tall 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.
Equivalent chamber references: 390 x 765 x 390 MM, 39 x 77 x 39 CM and 15 x 30 x 15 INCH. Buyers searching for 1200 Degree Celsius High Temperature Box Furnace 390 x 765 x 390 MM chamber; 1200°C High Temperature Box Furnace 390 x 765 x 390 MM; 1200 Degree Celsius High Temperature Box Furnace 39 x 77 x 39 CM chamber; 1200°C High Temperature Box Furnace 39 x 77 x 39 CM; 1200 Degree Celsius High Temperature Box Furnace 15 x 30 x 15 INCH chamber; 1200°C High Temperature Box Furnace 15 x 30 x 15 INCH can verify the same physical chamber on this canonical product page before requesting price, GST invoice, packaging and delivery.
Trutherm manufactures 1200 Degree Celsius (°C) High Temperature Box Furnace 390 x 765 x 390 MM Chamber for buyers who search by exact machine type, chamber size and 1200°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.
Box furnaces take their name from the simple rectangular chamber, which makes them easy to load with trays, crucibles or irregularly shaped parts through a front-opening door.
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.
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.