In the fully heat treated and cold worked condition beryllium copper is the hardest (HV 100-420) and strongest (tensile strength 410-1400 Nmm2) of any copper alloy. It is similar in mechanical properties to many high strength steels but, compared to steels, it has better corrosion resistance (approximately equivalent to nickel silvers), higher electrical conductivity (16-65% IACS) and higher thermal conductivity (210WmoC). It is also non-sparking and non-magnetic.

In the fully heat treated and cold worked condition beryllium copper is the hardest (HV 100-420) and strongest (tensile strength 410-1400 Nmm2) of any copper alloy. It is similar in mechanical properties to many high strength steels but, compared to steels, it has better corrosion resistance (approximately equivalent to nickel silvers), higher electrical conductivity (16-65% IACS) and higher thermal conductivity (210WmoC). It is also non-sparking and non-magnetic.