ISO 10243 is a complete range made of chrome-vanadium alloyed spring steel, in stock for immediate delivery.
The standard specifies the following parameters for compression springs with a rectangular wire cross-section:
D: hole diameter, installation dimension
d: axle diameter, installation dimension
L: free length, unloaded spring
R: spring constant N/mm
ISO 10243 also specifies max. recommended compression for each spring and colour markings for each spring load.