EN25 ROUND BAR STOCKIST & SUPPLIER
EN25 High Tensile Steel
En25 Round Bar
EN25 is 2.5% nickel chromium molybdenum specification usually supplied hardened and tempered suitable for ranges 90-160 kg/mm2. EN25 steel is readily machinable and combines a good high tensile steel strength with shock resistance, ductility and wear resistance. It is widely used engineering steel with reasonably good impact properties at low temperatures, whilst this is also suitable for a variety of elevated temperature applications.
2½% Nickel Chromium Molybdenum alloy steel with increased strength due to the Nickel content. Supplied in the hardened and tempered condition.
Characterized by high strength and toughness in very large sections - similar to EN26 but with lower carbon content. Pre hardened and tempered EN25 can be further surface hardened by flame or induction hardening, and by nitriding. EN25 is used extensively in most industry sectors for applications requiring higher tensile and yield strength than 4140 can provide.
Typical uses are: Adapters, Axles, Connecting Rods, Die Holders, Drill Shanks, Ejector Rods, Hydraulic Clamps, Jack Shafts, Line Shafts, Motor Shafts, Nuts, Pins, Piston Rods, Pump Shafts, Rams, Spindles, Torsion Bars Winch Gears etc.
EN25 Chemical Composition :
| Chemical Composition (Base Material) | ||
| EN25 | Min. % | Max % |
| Carbon | 0.27 | 0.35 |
| Silicon | 0.10 | 0.40 |
| Manganese | 0.45 | 0.70 |
| Nickel | 2.30 | 2.80 |
| Chromium | 0.50 | 0.80 |
| Molybdenum | 0.45 | 0.65 |
| Phosphorous | 0 | 0.040 |
| Sulphur | 0 | 0.040 |
Related Specifications or Nearest Standard :
| Australia | AS 1444-2007 | X9931 |
| Germany | W. Nr. | 1.6743 |
| Din | 32NiCrMo10-4 | |
| Great Britain | BS970: Part 3: 1991 | 826M31 |
| BS970: 1955 | EN25 |
Applications :
Highly stressed components of large cross section for automotive, and general engineering applications, such as shafts, connecting rods, pump and gear shafts heavy forgings where optimum strength is required.
Welding :
Limited weldability. Parts should be welded in the hardened and tempered condition. Strength properties of the joint will not be the same as the base metal. Preheat 300-400oC. Temper after welding to about 35-50o c below the recommended tempering temperature.