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CHEMICAL COMPOSITION (Typical Analysis in %)
EN 9 carbon steel is a common medium carbon and medium tensile steel, with improved strength over mild steel, through-hardening medium carbon steel. EN 9 carbon steel is also readily machinable in any condition.
EN 9 steels are generally used in the as supplied untreated condition. But EN 9 steels can be further surface-hardened by induction processes, producing components with enhanced wear resistance. Steel EN 9 materials in its heat treated forms possesses good homogenous metallurgical structures, giving consistent machining properties.
Annealing Heat slowly to 6 90-710°C, soak well. Cool slowly in the furnace.
Hardening Heat the component slowly to 920- 960°C and allow it to be heated through. Quench in oil or water.
EN 9 is widely used for many general engineering applications
Typical applications include shafts, studs, bolts, connecting rods, screws, rollers
raise temperature to 1050°C for forging. Do not forge below 950°C. After forging cool slowly, preferably in a furnace
EN 9 steel grade belongs to the standard of BS 970-1955, which is a standard for wrought steel for mechanical and allied engineering purpose. In BS 970 standards, there are some other common steel grades, like EN9, EN19, EN24, EN36 etc.
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