Yield Strength of Beryllium Copper

The Yield Strength of Beryllium Copper constant displays the value of the yield strength for beryllium copper UNS C17200 (1110 MPa). 

Yield strength or yield stress is defined as the stress at which a material begins plastic deformation. Beryllium copper, also known as beryllium bronze, is a copper alloy that contains 0.5-3% beryllium. It is the strongest and hardest of any copper alloy. The yield strength of beryllium copper UNS C17200 is 1110 MPa. 

Reference

Material Properties (https://material-properties.org/beryllium-copper-density-strength-hardness-melting-point/)