ALLOY STEELS

BS : 970 EN:Specn Type of ApplicationChemical Composition %

C Mn Ni Cr Mo

EN-16Manganese-Molybdenum Steel suitable for tensile ranges of 45/75 tons according to the ruling section.

0.30/0.40 1.30/1.80 — — 0.20/0.35

EN-181 per cent Chromium Steel Suitable for tensile ranges of 45/65 tons according the ruling section

0.35/0.45 0.60/0.90 — 0.85/1.15 —

EN-191 per cent Chromium-Molybdenum Steel suitable for tensile ranges of 45/80 tons according to the ruling section of the part

0.35/0.45 0.50/0.80 — 0.90/1.50 0.20/0.40

EN-24

1 1/2 percent Nickel-Chromium Molybdenum Steel suitable for tensile ranges of 50/100 tons according to the ruling section of the part

0.35/0.45 0.45/0.70 1.30/1.80 2.30/2.80 0.20/0.35

EN-25

2 1/2 percent Nickel-Chromium Molybdenum Steel. (Medium Carbon), suitable for tensile ranges of 50/100 tons according to the ruling section of the part

0.27/0.35 0.50/0.70 2.30/2.80 0.50/0.80 0.40/0.70

EN-26

2 1/2 percent Nickel-Chromium Molybdenum Steel (High Carbon), suitable for tensile ranges of 60/100 tons according to the ruling section of the part

0.36/0.44 0.50/0.70 2.30/2.80 2.30/2.80 0.40/0.70

EN-27

3 per cent Nickel-Chromium Molybdenum Steel suitable for tensile ranges of 55/80 tons, according to the ruling section of the part

0.25/0.35 0.40/0.70 3.00/3.75 0.50/1.30 0.20/0.65

EN-28

3 1/2 percent Nickel-Chromium Molybdenum Steel suitable for tensile ranges of 60/90 tons according to the ruling section of the part

0.25/0.40 0.40/0.70 3.00/4.50 0.75/1.50 0.20/0.65

EN-29 B

3 percent Nickel-Chromium Molybdenum Steel suitable for tensile ranges of 45/100 tons, according to the ruling section of the part

0.15/0.35 0.30/0.65 0.40 max 2.50/3.50 0.30/0.70

EN-30 B3 per cent Nickel-Chromium Steel Case Hardening Steel

0.26/0.34 0.40/0.60 3.90/4.30 1.10/1.40 0.20/0.40

EN-36

4 1/2 percent Nickel-Chromium Molybdenum Steel suitable for tensile for gears, aero engine connecting rounds high duty bolts, spindles etc.

0.12/0.18 0.30/0.60 3.00/3.75 0.60/1.10 —

EN-36 C4 percent Nickel-Chromium Molybdenum Case Hardening Steel

0.12/0.18 0.30/0.60 3.00/3.75 0.60/1.10 0.10/0.25

EN-39 B4 1/4 Percent Nickel-Chromium case hardening steel suitable for High Duty Transmission & Reduction gears

0.12/0.18 0.50 max 3.80/4.50 1.00/1.40 0.15/0.35

EN-40 B3 per cent Chromium-Molybdenum Nitriding Steel

0.20/0.30 0.40/0.650 0.40 max 2.90/3.50 0.40/0.70

EN-41 B*1 1/4 percent Chromium-Aluminium Molybdenum Nitriding Steel

0.35/0.45 0.30/0.65 0.40 max 1.40/1.80 0.10/0.25

** EN 52 Silicon Chromium Valve Steel 0.40/0.50 0.30/0.60 — 7.50/9.50 —

EN-100 Low Alloy Steel 0.35/0.45 1.20/1.50 0.50/1.00 0.30/0.60 0.15/0.25

EN-111 Low Nickel Chromium Steel 0.30/0.40 0.60/0.90 1.00/1.50 0.45/0.75 —

EN-202Carbon-Manganese Case-Hardening Steel (Semi - free cutting)

0.08/0.18 1.20/1.50 — — —

EN-3531 1/4 per cent Nickel-Chromium Case-Hardening Steel

0.10/0.20 0.50/1.00 1.00/1.50 0.75/1.25 0.08/0.15

EN-3541 1/2 percent Nickel-Chromium Molybdenum Case-Hardening Steel

0.10/0.20 0.50/1.00 1.50/2.00 0.75/1.25 0.10/0.20