| Category | Muffle Furnace |
| Model | Box Furnace |
| Max Temperature | 800°C (1472°F) |
| Working Temperature | 700°C |
| Thermocouple Type | K (Chromel-Alumel) |
| Thermocouple Details | -40 to +750°C range, MgO insulated mineral, Inconel 600 sheath, 4mm diameter, Type K, Tolerance Class 1 |
| Heating Element | Kanthal A1 (FeCrAl) |
| Element Details | Superior cyclic performance, FeCrAl alloy with rare earth elements, Max temp: 1425°C |
| 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 | 20.34 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 286.72 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.
Trutherm manufactures 800 Degree Celsius (°C) Box Furnace 420 x 420 x 800 MM Chamber for buyers who search by exact machine type, chamber size and 800°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.
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 800 Degree Celsius Box Furnace 420 x 420 x 800 MM chamber; 800°C Box Furnace 420 x 420 x 800 MM; 800 Degree Celsius Box Furnace 42 x 42 x 80 CM chamber; 800°C Box Furnace 42 x 42 x 80 CM; 800 Degree Celsius Box Furnace 16 x 16 x 32 INCH chamber; 800°C Box Furnace 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.
Tool rooms and forge shops favour box furnaces because a single chamber can handle annealing, hardening and tempering cycles without changing fixtures between jobs.
Where sample orientation is not critical, the flat shelf and square chamber of a box furnace generally load faster than a cylindrical tube furnace of similar volume.
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.