I am designing a spring using phosphor bronze as the material. I have data on SUS material, but I do not know the maximum (limit) bending stress value of phosphor bronze.
There are several types of phosphor bronze materials for springs and their tensile strengths are different.
Therefore, the maximum bending stress value determined by the standard tensile strength value of the phosphor bronze material used vary too.
However, the allowable bending stress value is about 75% of the tensile strength’s lower limit.
*Tensile strengths
【Alloy number】【Type】【Tensile strength N/mm 2】
C5210 1/2H 470～610
C5210 H 590～705
C5210 EH 685～785
C5210 SH 735～835
