ASTM E2624 sets out procedures and requirements for the torque calibration of static and quasi-static torque-capable testing machines, including devices used to calibrate hand torque tools. It covers three methods: standard weights with lever arms, elastic torque measuring devices, and elastic force measuring devices with lever arms.
Whichever method is used must meet a specified measurement uncertainty and be traceable to SI units, and the buyer, owner or user designates which torque-indicating systems are calibrated and reported. ASTM explains that users need to know the applied torque and that its value is traceable, which is what this calibration verifies. Calibration devices must themselves be calibrated under ASTM E2428. The practice applies to users, manufacturers and calibration service providers.
The practice applies to torque-capable testing machines such as torsion testers, including our GenTor horizontal torsion tester. If you need help matching ASTM E2624 requirements to your parts or setup, contact our team.
