| Category | Muffle Furnace |
| Model | Box Furnace |
| Max Temperature | 1400°C (2552°F) |
| Working Temperature | 1300°C |
| Thermocouple Type | B (Platinum-30% Rhodium) |
| Thermocouple Details | 200 to +1700°C range, High purity alumina insulation, Platinum-Rhodium alloy sheath, 8mm diameter, Type B, Tolerance Class 2 |
| Heating Element | Silicon Carbide (SiC) |
| Element Details | SiC heating elements, Max temp: 1600°C, High power density, Brittle material |
| Chamber (MM) | 390 x 390 x 770 |
| Outer Body (MM) | 795.0 x 1005.0 x 1060.0 |
| Chamber Volume | 117.1 Litres |
| Volume (cu.ft) | 31.1 ft³ |
| Power Load | 20.17 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 260.26 kg |
| Chamber Shape | Square |
Characterized by its simple, box-shaped chamber, this furnace is a versatile workhorse for general heat treatment processes like annealing, tempering, and stress relieving. Operating from 600°C, it provides a uniform thermal environment. The working principle utilizes electric heating elements or gas burners lining the insulated walls of the rectangular chamber, with a door for front loading. Its purpose is to offer reliable and straightforward heating for a wide range of materials, including metals and ceramics, in batch processes. Common in tool rooms, forge shops, and labs, its simplicity and effectiveness make it widely popular.
This configuration is suitable when the sample load must fit a 390 x 390 x 770 MM chamber with usable chamber volume of 117.1 litre, approximate power load of 19.8 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.
Equivalent chamber references: 390 x 390 x 770 MM, 39 x 39 x 77 CM and 15 x 15 x 30 INCH. Buyers searching for 1400 Degree Celsius Box Furnace 390 x 390 x 770 MM chamber; 1400°C Box Furnace 390 x 390 x 770 MM; 1400 Degree Celsius Box Furnace 39 x 39 x 77 CM chamber; 1400°C Box Furnace 39 x 39 x 77 CM; 1400 Degree Celsius Box Furnace 15 x 15 x 30 INCH chamber; 1400°C Box Furnace 15 x 15 x 30 INCH can verify the same physical chamber on this canonical product page before requesting price, GST invoice, packaging and delivery.
Trutherm manufactures 1400 Degree Celsius (°C) Box Furnace 390 x 390 x 770 MM Chamber for buyers who search by exact machine type, chamber size and 1400°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.
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.
Door seal quality and insulation thickness directly affect heat-up time and running cost, both of which are sized to the chamber volume on this model.
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.