Alloy Steel is a derivative of carbon steel where element is added or deleted to yield certain properties. Typically these properties include machinability, wearability, and strength. An iron-based mixture is considered to be an alloy steel when manganese is greater than 0.165%, silicon over 0.5%, copper above 0.6%, or other minimum quantities of alloying elements such as chromium, nickel, molybdenum, or tungsten are present. Basically alloy steel is classified into two groups: Low Alloy Steel and High Alloy Steel.

Ventura Alloy And Steels stocks and supplies alloy steel in different grades in Rounds, Squares and Flats with various size ranges.

 

AISI / ASTM MATERIAL CHEMISTRY APPLICATION
EN DIN JIS C Si Mn P S Cr Mo V
EN8 0.36-0.44 0.10-0.40 0.60-1.00 0.050 max 0.050 max 0.4% medium carbon steel. A general purpose steel for applications requiring added strength and superior tensile properties to mild steel specifications.
EN9 0.50-0.60 0.05-0.35 0.50-0.80 0.050 max 0.050 max 0.5% carbon steel giving higher tensile than EN8. Can be induction or flame hardened.
EN19 0.35-0.45 0.10-0.35 0.50-0.80 0.035 max 0.050 max 0.9 0.20-0.40 1% chromium molybdenum high tensile steel. Suitable for highly stressed applications where greater strength is required.
4340 EN24 34CrNiMo6 0.36-0.44 0.10-0.40 0.45-0.70 0.035 max 0.035 max 1.00-1.40 0.20-0.35 1.30-1.70 Nickel chromium molybdenum high tensile steel. Has good wear and shock resistance and is suitable for tensile ranges up to 1550 N/mm².
52100 EN31 100Cr6 0.90-1.20 0.10-0.35 0.30-0.75 0.050 max 0.050 max 1.00-1.60 High carbon alloy steel which achieves a high degree of hardness with compressive strength and abrasion resistance.
EN353 20NiCrMo5 0.10-0.20 0.35 max 0.50-1.00 0.040 max 0.040 max 0.75-1.25 0.08-0.15 1.00-1.250
8620 S620 21NiCrMo2 0.18-0.23 0.15-0.35 0.70-0.90 0.035 max 0.040 max 0.40-0.60 0.15-0.25 0.40-0.70 A low alloy case hardening steel
4140 4140 42CrMo4 0.38-0.43 0.10-0.35 0.75-1.00 0.035 max 0.040 max 0.80-1.10 0.15-0.25 Chromium molybdenum high tensile steel. Supplied 18-22 HRC (Hardness Rockwell)
16MnCr5 16MnCr5 0.14-0.19 0.15-0.40 1.00-1.30 0.025 max 0.035 max 0.80-1.10
5120 20MnCr5 20MnCr5 0.17-0.22 0.10-0.35 1.10-1.40 0.025 max 0.035 max 1.00-1.30

 

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