Muffle Furnace

A high-temperature muffle furnace is used for materials processing in controlled atmospheres. The muffle furnace provides a controlled environment with stable heating conditions and precise temperatures. The Across International GCF 1700 Furnace can operate with various gases and chamber pressures to help control chemical reactions and phase transitions. The muffle furnace can be used for the high temperature processing of metals, glasses, ceramics, and composites, including annealing, ashing, calcining, drying, firing, melting, sintering, and more to manipulate the microstructure of the tested material.

Typical Experimental Results

Calcined and sintered Yttria spray coated aluminum crucibles from high temperature testing

Yttria spray coated aluminum crucibles before (left) and after (right) calcination and sintering.

Applications

Aerospace	Annealing	Ashing	Automotive	Biomedical
Calcining	Ceramics	Chemistry	Composites	Crystallization
Densification	Drying	Electronics	Evaporation	Firing
Glasses	Heat Treatment	High Temperature Processing	Industrial Processes	Manufacturing
Material Science	Melting	Metallurgy	Off Gassing	Pharmaceuticals
Phase Diagrams	Phase Transitions	Semiconductors	Sintering	Thermal Analysis

Instrument: Across International GCF 17000 Furnace

Instrument Key Specifications

Temperature Range	-68 – 180 ºC
Humidity Range	20 – 95% RH, RH over the temperature range of 20°C to 85°C, limited by a 5°C dew point
Cooling Rate	3.3 °C/min, no load, from +85 to -40 °C
Heating Rate	4.8 °C/min, no load, from -40 to +85°C
Humidity Precision	±5% RH after stabilization
Temperature Precision	±1 ºC measured at control sensor
Air Flow Rate	250 cfm
Gas	Air
Chamber Size	24″ W x 27.5″ D x 28″ H

For more information, please read our application notes:
All application notes can be found here

ASTM Standards

ASTM	Title	Website Link
A991	Standard Test Method for Conducting Temperature Uniformity Surveys of Furnaces Used to Heat Treat Steel Products	Link

ISO Standards