There are two kinds of material of non-sparking tools:

Beryllium Copper alloy(non-sparking and anti-magnetism) , 35-40 HRC

and Aluminium Bronze alloy  (non-sparking) , 25-30 HRC

These tools can efficiently avoid rising spark when tools strike, rub or collide with target in explosive atmosphere or flammable vapours.

Therefore, non-sparking tools are widely used in oil and gas works, petro-chemical plants, explosive manufactories, mines, shipyards, pipeline construction and many others.