When using a hand tool, you need to make sure it works and won’t break.
So there would be 2 important indicators of mechanical properties
Stiffness: The ability of a metal material to resist elastic deformation when subjected to force.
Strength: The ability of a metal material to resist plastic deformation and fracture under external forces.
There are some measurements:
A typical indicator of toughness is elongation A (%)
of strength are yield strength Rp0.2 (MPa) and tensile strength Rm (MPa)
of stiffness is the elastic modulus E (MPa)
of hardness is Rockwell hardness HRB
Our products are compliant with DIN and ANSI and works even better, so you could trust our quality no doubt.
 

 
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