Grade Reference · Darukhana Yard

EN8, EN9, EN19, EN24, EN31 & C45 Steel Grades

Standard designations, chemistry ranges and typical applications for the engineering steels we stock as round bar, shaft and forged material — supplied cut-to-size from Darukhana, Mazgaon, Mumbai.

Values shown are published standard designations (BS 970, IS 1570, AISI/SAE, DIN/EN) given for identification and cross-reference. Chemistry and mechanical properties of any supplied material are governed by the Mill Test Certificate for that heat.

GRADE DIRECTORY

Select a grade for full specifications, standard equivalents and the forms we supply it in.

Medium Carbon Steel080M40

EN8

Unalloyed medium carbon steel supplied as round bar, shaft and cut-to-size blanks. The default general-engineering grade where mild steel is not strong enough and alloy steel is not required.

  • 080M40
  • 1040
  • C40 / 1.0511
EN8 Specifications →
Medium Carbon Steel070M55

EN9

Higher carbon than EN8, giving greater hardness and wear resistance for mill rollers, wear pins and high-torque drive shafts.

  • 070M55
  • 1055
  • C55 / 1.0535
EN9 Specifications →
Alloy Steel709M40

EN19

Chromium-molybdenum alloy steel — the standard high-strength grade for gears, spindles, hydraulic components and tooling that must be through-hardened.

  • 709M40
  • 4140
  • 42CrMo4 / 1.7225
EN19 Specifications →
Alloy Steel817M40

EN24

Nickel-chromium-molybdenum high tensile steel for the most heavily loaded shafts — marine propeller shafting, crane pins and power transmission drives.

  • 817M40
  • 4340
  • 34CrNiMo6 / 1.6582
EN24 Specifications →
Bearing Steel534A99

EN31

High carbon chromium bearing steel offering very high hardness and dimensional stability after hardening — for bearing races, rollers and precision tooling.

  • 534A99
  • 52100
  • 100Cr6 / 1.3505
EN31 Specifications →
Medium Carbon Steel1.0503

C45

Unalloyed medium carbon steel to the DIN/EN designation, functionally close to EN8. Widely specified on European and OEM drawings.

  • C45 / 1.0503
  • 1045
  • 080M46
C45 Specifications →
GRADE NOT LISTED?

Send us the grade on your drawing and we will confirm availability.

We also handle EN353, IS 2062, ASTM A36 and equivalent designations. Share the grade, diameter, cut length and quantity and we will come back on stock and price.

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