High-Temperature Tensile Testing Machine – STM-150 (up to 1000˚C)

Servo electrical operating mechanism with ball screws
Equipped for high-temperature tensile testing (furnace, control system, interface, and grips) at 550˚C and 980˚C
Capable of performing high-temperature tensile tests for determining tensile strength of ferrous and non-ferrous metal specimens at elevated temperatures
Additional capabilities: tensile, compression, cyclic, bending, peeling, tear, creep, and relaxation tests under ambient temperature in compliance with ASTM, DIN, EN, ISO, JIS, various grips and fixtures can be mounted
Precision load cell, capacity: 15000kgf, accuracy class: 0.5
A digital encoder for measuring the crosshead displacement (extension resolution 0.01 µm)
Equipped with AC servo motor and driver featuring a closed-loop control system
Fully computerized control through RS-232 and USB serial ports using DSP-based hardware technology without restriction in PC type
Powerful JADOO-Controller, a windows-based software for defining high-temperature tensile, compression, creep, cyclic, and step tests. It generates unrestricted comprehensive reports and plots Force-Extension, Stress-Elongation, Force-Time, Extension-Time graphs
Real-time speed control from 0.001 to 500 mm/min, supporting advanced control modes such as constant displacement rate, constant strain rate, constant force rate, constant stress rate, constant true strain rate, constant true stress rate (when JADOO software is available)
Compatible with low-capacity load cells to improve measurement accuracy
Compatible with specialized extensometers for high-temperature tensile testing
Quick installation of various fixtures and grips (tensile, compression, bending, peeling, …) using pin-type connections
Portable keyboard for convenient operation

STM-150 is a tensile testing machine with a servo-electric mechanism using ball screws, driven by an AC servo motor and driver. Force is measured by a 15-ton load cell, accuracy class 0.5 (max. error 0.5% of the reading from 2% to 100% of the load cell capacity) in compliance with ISO 7500 and EN 10002.

The system is equipped with a circular furnace featuring three dedicated heating zones for uniform vertical and angular temperature distribution. The furnace operates at temperatures up to 1100 ˚C, and each zone is individually controlled via a three-zone PID controller accessible through an HMI touch-screen panel (resolution 0.1). The system supports three thermocouples for measuring the mean specimen temperature and the furnace bulk temperature, with automatic compensation for temperature gradients between zones based on real-time specimen thermocouple feedback. The furnace can move vertically relative to the specimen for easy access and adjustment of both the specimen and thermocouples. it can also be easily detached from the machine using supporting arms and guide rods.

The machine features a displacement sensor without stroke limitation, providing 0.1 µm resolution in no load mode and a displacement measurement accuracy better than 0.05 mm at full stroke. The test speed is adjustable from 0.001 to 500 mm/min. The system supports various low-capacity load cells to improve measurement accuracy, and automatically identifies the load cell and applies the corresponding settings.

High-temperature tensile testing can be conducted using the Windows-based JADOO software under rate control in two methods: constant force and constant stress, in accordance with the relevant standards.

Load Rate Control for all of machine instrument, Control (Force•, Stress•, Extension•, Strain•, … = cte)

Compatible with specimen-mounted extensometers for high-temperature tensile tests, enabling strain measurement (resolution 0.001 mm). The extensometer can also be used as a feedback source for closed-loop control of the loading rate

Specialized high-temperature jaws for securely clamping round threaded specimens (M4, M6, M6, M10, M12, M14), as well as flat specimens during tensile testing in accordance with relevant standards (sub-size, based on ASTM E8) made of superalloys at temperatures up to 980˚C

The remaining hardware and software capabilities of the machine are identical to those of the STM series (servo-electric configuration)

STM-20 machines plot real-time stress-strain curves during tensile testing and automatically calculate key mechanical properties (yield stress, ultimate tensile strength, strain, plastic deformability, stiffness, elongation, …). They can also compare high-temperature test results with those obtained at ambient conditions, making them suitable for use during production processes (such as hot forming, melting, and rolling), as well as in research and quality control of metal and ceramic components. By analyzing such data, material strength, ductility, and failure mode can be evaluated. Typical application areas include:

Research institutes, power plant equipment manufacturers, and gas turbine producers
Aviation and aerospace industries
Hot-work steel manufacturers
Material testing of high-temperature equipment (e.g., boilers and furnaces)
Quality control and performance verification of superalloys (e.g., Monel and Inconel)
Engineering departments (metallurgy and mechanics)