EN8 Carbon Steel 
                     EN8 Carbon 
Steel
EN8 carbon steel material is through- solidifying medium carbon essence that 
is constantly hired for making axles, shafts, accoutrements , jolts, and 
superstuds. EN8 can be machined without any trouble.
EN8 can be warmth handled to provide a atrocious bottom hardness and 
mild put on resistance through way of honey or induction hardening 
techniques.
EN8 engineering metallic, additionally called 080M40, is an unadulterated 
medium carbon metallic.
EN8 carbon metallic is a not unusual medium carbon and medium tensile metal, 
with improved strength over moderate steel, via-hardening medium carbon 
steel. EN8 carbon metallic is also with out di  culty machinable in any condition.
EN8 steels are commonly used in the as furnished untreated condition. But EN8 
steels may be in addition  oor-hardened by means of induction procedures, 
generating additives with more suited put on resistance. Steel EN8 materials in 
its warmness treated bureaucracy possesses accurate homogenous 
metallurgical systems, giving regular machining homes.
Chemical composition of EN8 steel :
TheE floelmlowenintg desk inCdicates thSe ichemical comMpnosition of EN8 stPeel: S
carbon silicon manganesium phosphorus sulphur
Content(%) 0.36-0.44 0.10-0.40 0.60-1.00 0.05 0.005
Hardening of EN8 Steel:
This steel bar can be  ame or induction hardened to attain a surface hardness 
of 50-55HRC. Forms of supply:
We need to deliver EN8 metal in colourful round bar in drawn grew to come back 
circumstance or spherical heat rolled, hexagon, blockish, metallic places and 
plate.
EN8 Steel Round Bar 8mm- 1600 
mm EN8 Steel Cold Drawn Bar 
5mm- 70 mm
EN8 Carbon Steel Flat & Plate 
16mm to 350mm
Heat Treatment of EN8 Steel :
EN8 essence is usually supplied undressed however also be able of be furnished 
to reserve in the regularized or in the long run toast treated,
that is right enough for a wide range of operations.
Quenching– In oil painting or water after hotting to this temperature will 
harden the metal. Tempering – Carbon metallic EN8 or 080m40 can be tempered 
at a warmness of between 550
°C to 660 °C( 1022 °F- 1220 °F), heated for about 1 hour for every inch of 
consistence, also cool in oil portray or water.
Normalizing- EN8 exceptional slight metal takes location at 830- 860 °C( 1526 
°F- 1580 °F) additionally it is cooled in air.
Forging Properties of EN8 carbon Steel :
Preheat the EN8 metallic cautiously, then increase temperature to 1050°C for 
forging. Do not forge below 850°C. After forging cool en8 metallic slowly, 
preferably in a furnace.
EN8 Steel Grade Speci cations:
Other metallic grades in ASTM, DIN, JIS requirements are similar and equal to 
EN8 metallic, as follows:
BS 970-1991:080M40
AISI/ASTM A29:1038, 1040, 1045
DIN Werksto No.: 1.0511, 1.1186, 
1.1189 BS & DIN European: C40, 
CK40, C45, CK45 JIS G4051: S40C, 
Forms of EN8 carbon steel :
S45C
Strips – thickness 0.4mm to 
4mm
Sheets – cold rolled sheets – thickness 0.4mm 
to 4mm
Sheets – hot rolled sheets – thickness 2.7mm 
to 12mm Plates – thickness – 16mm to 
150mm plates
Heavy plates – thickness – 16mm to 
350mm plates Forms of EN8 steel Round 
bar:
Rolled round bar – diameter 16mm to 
250mm Heavy forged round – diameter 
200mm to 450mm
Forms of EN8 steel Forged Gear blanks:
Heavy machined round – diameter 260mm to 
Forged gear blank- diameter 200mm to 
620mm Heavy ship shafts – diameter 450mm 
1500mm Thickness – 80mm to 350mm
to 1000mm
Forms of EN8 steel Flat bar:
Flat bar/Rolled at bar-thickness upto 50mm width 
upto 455mm Forged at bar-thickness upto 305mm 
and width upto 455mm Forms of EN8 steel Blocks:
Machined blocks/ Bandsaw cut blocks-thickness upto 
350mm Forged blocks-thickness upto 400mm
TYPES OF OTHER GRADES AVAILABLE :
C45, EN8D, EN9, EN19, EN24, EN31,EN36C, EN41B, EN47, EN353, IS2062, 42Crmo4, 
HCHCR, OHNS, D2, D3, H-11, H-13,M2, M35, M42, M48,1.2714, SKD-11, P20, 
P20+S, P20+Ni, P20+Ni+HH, SAE 4140, SAE4340, SAE 8620, 16MNCR5, 20MNCR5, 
C35, C40, C50, C60, CK45, 40C8, 45C8,
55C8, C55MN75, SAE 52100, S40C,S355J2G3.
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