OTF-1500X-S-ST is a compact high-temperature tensile strength tester via a small punch method, also called SPT - small punch tester- which can test the high-temperature mechanical strength of materials up to 1350°C via a small disc ( 8 mm dia ) quickly and economically. The product is protected by Patent # ZL 2020 1 0832813.2 SPECIFICATIONS Power AC 208-240V Single Phase, 50/60 Hz, 15A 2.5 KVA A 10-foot power cable is included, but no power plug Furnace Compact and splitable tube furnace with Alumina fiber inner insulator and double-layer steel outer layer Temperature accuracy: +/- 0.1 °C (Euro-Therm controller available at extra cost) The heating furnace is located in a vacuum chamber for controlling the atmosphere. Punch Die Fixture& Sample The fixture ( die) is made of recrystallized SiC The fixture consists of two parts and is tightened by M18x2 The sample to be tested: 8 mm dia. x 0.5 mm thickness, which is tightened in the middle of the die. Click here to order extra SiC Die Optional: You may use the CNC Sample Puncher (Pic. 3 ) or EDM machine (Pic. 4) to make the round sample. Pic. 3 Pic. 4 Pushing Rod The push rod is made of Moly via precision machining (Pic. 1) Click here to order extra Mo Punching Rod An alignment connector is installed with the pushing rod to ensure a 2.5 mm dia. head in the center of the SiC die. (Pic. 2) Water Chiller（ optional） MTI recommends EQ-KJ5000 Digital Temperature Controlled Recirculating Water Chiller Heating Furnace & Vacuum Chamber Special MoSi2 heating elements are built in a splitable furnace with thermal insulation. Mac. working Temperature 1350°C ≤ continuously The heating furnace is fixed in the vacuum-sealed chamber with a hinged-type door Working gas: All types of inert gases and oxygen gas. Max. Vacuum level: 10-2 torr by a mechanical pump and 10-5 torr by a turbopump. Please click the pictures below to choose a pump and a digital vacuum gauge separately. (Pic. 1-2), and a digital vacuum gauge (Pic 3) (Pic. 1) (Pic. 2) (Pic. 3) Temperature Control Built-in PID Auto-Tune function with overheating & broken thermocouple protection. Over-temperature protection and alarm allow for operation without attendants (s). +/- 1 ºC temperature accuracy. RS-485 Communications Port to connect a laptop with the operating software. Fixture for Yield Strength The pressure is applied to the pushing rod via a heavy-duty DC motor. Constant loading speed is driven by a step motor with 1,000 kgf. force, which can provide a pressure up to 2 GPa. Loading speed: 0.02 to 60 mm/ minute, adjustable Load sensor accuracy +/- 0.2 N The displacement sensor is built-in with +/- 1-micron accuracy Control Panel A laptop computer will be used as a control panel with software to program the working temperature and the pushing rod speed One computer will control 4 sets of the machine. Software is included, but the Laptop computer is optional at an extra cost. The PC will display and record the force vs displacement for each sample at a set temperature. Optional Multiple machines controlled by a single PC is available for high-throughput research Compliance CE Certified NRTL certification (UL61010) or CSA certification is available upon request at an extra cost. Reference article Design of refractory multi-principal-element alloys for high-temperature applications, Jun Cui, npj Computational Materials, 2023 Small punch test methods of metallic materials for in-service pressure equipment (GB/T29459.1—2012, Chinese) Small Punch Test for Metallic Materials, A new ASTM International standard, 2020
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