unclesyd and TVP
Thank you for your answers.
However, I am trying to design a torsion spring made of rectangular shape wire of 17-7PH condition C using standard sizes available off the shelf. Opposed to round spring wire that comes in standard wire diameters I have difficulties to find the same for rectangular and square wires. The companies you mentioned are not giving any info (table) of commom sizes, they just mention their capabilities.