ALLOY & CARBON STEEL EN8

EN8 is an exceptionally prominent grade of through-hardening medium carbon steel, which is promptly machinable in any condition.


EN8 likewise know as 080M40. Unalloyed medium carbon steel. EN8 is a medium quality steel, great rigidity. Appropriate for shafts, focused on pins, studs, keys and so forth.


EN8 in its warmth treated structures has great homogenous metallurgical structures, giving reliable machining properties.


It is therefore prescribed that bigger sizes of EN8 are supplied in the untreated condition, and that any warmth treatment is done after initial stock removal. This should achieve better mechanical properties towards the core.




Chemical Composition


Element
Min
Max
Carbon, C0.350.45%
Manganese, Mn 0.601.0%
Silicon, Si0.50.35%
Sulphur-.--0.6
Phosphorus-.--0.6

Mechanical Properties


Max Stress
700-850 n/mm 2
 
Yield Stress465 n/mm 2  Min(up to 19mm LRS)
0.2% Proof Stress450 n/mm 2  Min(up to 19mm LRS)
Elongation16% Min(12% if cold drawn)
Impact KCV28 Joules Min(up to 19mm LRS
Hardness201-255 Brinell

Features


Heat Treatment

Tempering

Hardening

Normalizing

Soft Annealing

Welding

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