Zirconium-based and beryllium free bulk amorphous alloy

A beryllium-free bulk amorphous alloy, consisting of:

• in atomic percentage,
• 50%-63% of zirconium and/or hafnium as a base;
• 1.5%-4.5% of at least one first additional metal selected from the group consisting of titanium, niobium, and tantalum, wherein niobium is less than or equal to 2.5%;
• 0.5%-4.5% of at least one second additional metal selected from the group consisting of silver, gold, palladium, and platinum;
• 8.5%-17.5% of at least one third additional metal selected from the group consisting of chromium, cobalt, manganese, and iron;
• 9%-13% of aluminum;
• 10%-17.9% of copper;
• and
• inevitable impurities,
• wherein the alloy has ΔTx as calculated below of 98 K or less:
• ΔTx=Tx−Tg, where Tx and Tg is a crystallization point and a glass transition point of the alloy, respectively.