Up to 1100°C Three-Zone Split Furnaces (Series HTO 08, HTO 19, HTO 37 & STE-FM)
The HTO 08, HTO 19, HTO 37 and STE-FM Series are advanced three-zone split furnaces engineered for high-temperature materials testing in air. Their double-walled, convection-cooled design minimizes outer wall temperatures while ensuring excellent thermal stability. These furnaces support tension, compression, cyclic fatigue, fracture mechanics, and LCF applications.
HTO 08 offers a 300 mm heated zone, HTO 37 extends this to 360 mm, while HTO 19 provides a compact 200 mm heated zone optimized for LCF testing with HTG Series high-temperature grips.
Operating on low voltage and high current through a transformer, these furnaces achieve significantly extended heating-element lifespan compared to high-voltage systems. Key benefits include rapid sample access via split construction, durable embedded heating coils, lightweight asbestos-free insulation, stainless-steel housing, Eurotherm closed-loop temperature control, RS485 communication, programmable heating ramps, and multiple thermocouple feedthroughs. Optional sliding thermocouples and optimized end plates further enhance precision and test setup flexibility.
Up to 1200°C Three-Zone Split Furnaces (Series HTO 15, HTO 27, HTO 38, HTO 34 & HTO 39)
The HTO 15, HTO 27, HTO 38, HTO 34 and HTO 39 Series extend high-temperature testing capability up to 1200°C, offering robust performance for tension, compression, cyclic fatigue and fracture mechanics testing.
Heated zone lengths mirror the 1100°C series: HTO 15 at 300 mm, HTO 38 at 360 mm, and HTO 27 at 200 mm for LCF testing. The low-voltage, high-current operation increases heating-element durability and overall service life.
These furnaces feature a double-walled cooling design, automatic safety interlock that shuts down power when opened, embedded heating coils, lightweight insulation, and stainless-steel casing. Adjustable stainless latches ensure secure closure, and front cut-outs support side-entry extensometers. Three independent heating zones ensure uniformity, while Eurotherm temperature controllers with selectable PID settings deliver highly accurate closed-loop control. Additional highlights include over-temperature protection, RS485 communication, programmable ramps, and multiple thermocouple feedthroughs. Together, these make the HTO 1200°C series ideal for demanding industrial and research environments.
Up to 1400°C One- to Three-Zone Split Short High Furnaces (Series STE Version 21xx)
The STE 21xx Series provides a versatile solution for high-temperature testing up to 1400°C, offering one, two, or three heating zones depending on application needs. These furnaces are specifically engineered for tension, compression, fatigue and Low Cycle Fatigue testing across metals, ceramics, composites and other high-temperature materials.
Their short-body architecture allows the use of shorter pull rods and grips, lowering system cost and improving alignment. The clamshell-style front-opening design ensures exceptionally easy specimen access and operator comfort.
Constructed with a robust stainless steel case, the furnace can be configured with side-entry extensometer ports or optical windows for non-contact strain measurement. Silicon carbide heating elements combined with high-efficiency insulation deliver fast heating, superior thermal stability and energy efficiency.
Interchangeable insulation packs accommodate various specimen geometries. Control is managed through one to three Eurotherm controllers depending on zone configuration, supported by an independent over-temperature alarm for enhanced safety.
Up to 1540°C Three-Zone Split Furnaces (Series STE 3420)
The STE 3420 Series delivers exceptional high-temperature capability up to 1540°C using silicon carbide (SiC) rammed rod heating elements known for superior longevity, high density, slow aging and mechanical robustness.
These furnaces feature vacuum-cast ceramic fibre insulation for minimal thermal losses and strong structural integrity, combined with a stainless-steel outer shell and precision-machined end flanges.
Available in multiple standard and customized sizes, the STE 3420 series supports single-zone or multi-zone configurations and optional accessories such as viewports, gas-tight retorts and additional instrumentation.
Like other W+B furnace systems, these models operate on low voltage and high current for long heating-element service life, requiring a transformer and current-limiting components within the control system. This makes them ideal for advanced research laboratories and high-temperature industrial testing requiring stable, repeatable thermal performance.
Up to 1600°C One and Three-Zone Split Furnaces (Series HTO 20 & HTO-02)
The HTO 20 and HTO-02 Series are single-zone and three-zone split furnaces designed for ultra-high-temperature materials testing up to 1600°C. They are especially suited for tension, compression, flexural and cyclic fatigue testing on metallic and ceramic specimens.
These furnaces also integrate seamlessly with the PMA-06 High Temperature Deflection Measurement Device for precision flexural and compression testing on ceramics.
As with other W+B high-temperature furnaces, these systems operate using a low-voltage, high-current transformer configuration that significantly enhances the lifetime of the heating elements. Their split-body design ensures easy sample mounting, while optimized insulation, stable thermal control and durable construction ensure long-term performance in rigorous testing environments.