Historical
DIN 7523-2:1986
Steel forgings; design of drop and press forgings; machining allowances, drafts, edge radii, fillet radii, base thicknesses, wall thicknesses, rib widths, and rib radii (Foreign Standard)
This standard will give approximate values for machining allowances and for construction of critical parts of the shape to the designer of forgings.
Deutsches Institut für Normung [din]