High Carbon Spring Steel

Grade:
c-40 en-8 mc 11 high carbon spring steel (annealed form)
chemical composition of c-40 grade (as per is:2507) -
carbon - 0.35 to 0.45 %
manganese - 0.50 to 0.80 %
silicon - 0.10 - 0.35 %
sulphur - 0.04 % (max)
phosphorus - 0.04 % (max)
specifications -
hardness -
generally material in this grade is stocked in fully annealed form with a hardness of 140 - 160 hv vpn. Also as per customer's request different hardness range such as half-hard or full hard can be achieved.
Thickness range -
0.20 mm up to 4.00 mm
width range -
5.00 mm up to 400 mm
edge -
mill edge, sheared edge
coil form -
material can be supplied in coil form
sheet form -
material can be supplied in sheet form as well
application -
hair clips, fasteners, clutch plates, hose clamps, measuring tapes, cyclemotor chains, etc.
Other equivalent grades -
sae standards - sae 1040
as per din standards - ck-40
as per en standards - en-8
as per japanese standards - jis g 3311 s40