4. Torsion testing machine

Torsion testing machine is divided into spring torsion testing machine, wire torsion testing machine and material torsion testing machine.

Applicable materials: metal, nonmetal and parts, etc.

The torsion testing machine for metal wire is suitable for measuring the ability of metal wire with diameter (or characteristic size) of 0.1-10.0 mm to bear plastic deformation in unidirectional or bidirectional torsion and displaying the surface and internal defects of wire.

Test items: torsion performance test, maximum torque, torsional strength, upper yield strength and lower yield strength

Related standards: GB / T 239-1999 "metallic wire torsion test methods", international standards ISO 7800:1984 "metallic wire unidirectional torsion test methods" and ISO 9649:1990 "metallic wire bidirectional torsion test methods".