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 | ||||