| Category | Muffle Furnace |
| Model | Annealing Furnace |
| Max Temperature | 900°C (1652°F) |
| Working Temperature | 800°C |
| Thermocouple Type | K (Chromel-Alumel) |
| Thermocouple Details | 6mm diameter, Type K, Tolerance Class 2, -40 to +900°C range, MgO insulated mineral, Inconel 600 sheath |
| Heating Element | Kanthal A1 (FeCrAl) |
| Element Details | Superior cyclic performance, FeCrAl alloy with rare earth elements, Max temp: 1425°C |
| Chamber (MM) | 450 x 250 x 250 |
| Outer Body (MM) | 860.0 x 850.0 x 525.0 |
| Chamber Volume | 28 Litres |
| Volume (cu.ft) | 14 ft³ |
| Power Load | 10.76 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 126.34 kg |
| Chamber Shape | Rectangular - wide |
This furnace heats materials, typically metals or glass, and allows them to cool slowly to remove stresses and improve ductility. It operates at controlled temperatures (e.g., 550°C for metals) to initiate recrystallization or stress relief without altering the material's shape. The working principle involves a chamber that provides uniform, controlled heat, often with programmable cycles for temperature ramping and soaking. Its purpose is to enhance workability, prevent cracking during service, and prepare materials for further processing. Widely used in glass manufacturing and metallurgy, it ensures product reliability by eliminating internal weaknesses.
This configuration is suitable when the sample load must fit a 450 x 250 x 250 MM chamber with usable chamber volume of 28 litre, approximate power load of 11.1 kW, rectangular - wide 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 general laboratory and industrial heat-treatment applications requiring stable, repeatable temperature control.
Equivalent chamber references: 450 x 250 x 250 MM, 45 x 25 x 25 CM and 18 x 10 x 10 INCH. Buyers searching for 900 Degree Celsius Annealing Furnace 450 x 250 x 250 MM chamber; 900°C Annealing Furnace 450 x 250 x 250 MM; 900 Degree Celsius Annealing Furnace 45 x 25 x 25 CM chamber; 900°C Annealing Furnace 45 x 25 x 25 CM; 900 Degree Celsius Annealing Furnace 18 x 10 x 10 INCH chamber; 900°C Annealing Furnace 18 x 10 x 10 INCH can verify the same physical chamber on this canonical product page before requesting price, GST invoice, packaging and delivery.
Trutherm manufactures 900 Degree Celsius (°C) Annealing Furnace 450 x 250 x 250 MM Chamber for buyers who search by exact machine type, chamber size and 900°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.
A muffle furnace is usually the first furnace a lab installs, since it covers the broadest share of everyday heating, drying and ashing tasks before more specialised equipment is added.
A muffle furnace isolates the sample from direct contact with heating elements or combustion gases, giving cleaner, more repeatable results than an open flame or hot-plate process.
As a general-purpose muffle furnace, this model covers a broader range of routine heating tasks than a process-specific ashing, tube or sintering furnace, making it the practical default when the lab runs mixed sample types rather than one dedicated process.