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EN45
Technical Data
EN45 is a silicon mangenese , supplied in the as rolled contition. This steel is suitable for oil hardening and tempering.
TYPICAL ANALYSIS
C.
Si.
Mn.
S.
P.
0.55%
1.75%
0.75%
0.05%
0.05%
Forging:Forge at 1150°C.
Annealing: Slow furnace cool from 840°/900°C.
Hardening:Pre heat slowly to 650/700°C and thoroughly soak. Continue heating to the final hardening temperature of 870/930°C and allow the component to be heated through. Quench in oil.
Tempering: Temper immediately after quenching whilst tools are still hand warm. Re-heat to the tempering temperature, soak for one hour per 25 millimetre of total thickness, 2 hours minimum, then cool in air. For most applications tempering will be between 400°/550°C.
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