EN 24

[mechanicaltooling]

What is the chemical composition of EN 24 and in which standard it comes under? Is it a prehardened material or we have to harden it after preliminary machining if required?

 

[peteswift]

EN 24 is to British Standard 970 1955 ie old.
and is now equivalent to BS 970 1991 817M40 it is also equivalent ti AISE/SAE 4340 It is 1.5% nickel chrome molly steel

In the UK it can be geneally bought to T condition with a tensile range ot 850/1000 N/mm^2 or normalised and later heat treated. What application do you want it for?