EN 253
Grade Introduction:
EN353 Alloy steel is a very high strength steel alloy that is hardened and tempered before supplying and has nickel, chromium, molybdenum making its high tensile steel strength, with good ductility and wear resistance. With relatively good impact properties at low temperatures, EN353 is also suitable for a variety of elevated temperature applications. EN353 round bars have good internal strength and high external strength, which makes them highly wear-resistant. EN353 steel round bars offer a good combination of ductility, strength, and wear resistance. EN353 is a very high-strength alloy engineering steel.
Grade Application:
Acceptable for many automobile applications such as heavy-duty gear, shaft, pinion, camshafts, gudgeon pins.
Equivalent grades:
- BRITISH BS 970:1991 815M17
- BRITISH BS 970:1955 EN353
- GERMAN DIN 20NiCrMo5
- FRENCH AFNOR 20NCD5
- SWEDISH SS 2523
- EUROPEAN STEEL NAME 17NiCrMoS6-4
- EUROPEAN STANDARD EN10277-4
Chemical composition:
The following table shows the chemical composition of EN353 steel:
| Element | C | Si | Mn | P | S | Ch | Mo | Ni |
| Content (%) | 0.10-0.20 | 0.10-0.35 | 0.50-1.00 | 0.040 Max | 0.040 Max | 0.75-1.25 | 0.08-0.15 | 1.00-1.50 |
Hardening:
HB – 270
Heat Treatment :
The hardening treatment for most steels consists of heating the steel to a set temperature and then cooling it rapidly by plunging it into oil, water. EN8 and EN353 steel is an easily available and cheap material that is acceptable for heavy-duty applications.