For the working places where have the risk of burningexplosion,  non-sparking tools are important safety tools. They are made of hardest Cu-Be alloys. However, Be is very expensivepoisonous. To overcome this, we develop Be-free copper alloys which have high hardness for tools. In Taiwan, we have steel-tools industry. To have higher profit, it is promising to produce such Be-free non-sparking tools.

Beryllium copper is unique in their highest strengthhardness. The alloy has been used as non-sparking tools for a long time. Although beryllium is poisonexpensive, no suitable Cu alloys were developed for replacing them. Now, we have used the high-entropy alloy concept to develop beryllium-free medium entropy alloys which are cheap, hardno sparking. We have got the patent from Taiwan.

For the working places where have the risk of burningexplosion, such as mining tunnels, oilgas tanks, powder productionexplosive production, non-sparking tools are important safety tools. In Taiwan, we have steel-tools industry. To have higher profit, it is promising to produce such Be-free non-sparking tools.

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