EN24   EN24T   EN24U  Technical Data  EN24 is a high quality, high tensile, alloy steel . Usually supplied readily machineable in ‘T’ condition, it combines high   tensile strength, shock resistance, good ductility and resistance to wear. EN24 is available from stock in round bar, flat bar   and plate. TYPICAL ANALYSIS EN24    C. Si. Mn Ni. Cr. Mo. 0.40% 0.30% 0.60% 1.50% 1.20% 0.25%  Hardening:  Heat uniformly to 823/850°C until heated through. Quench in oil.  Tempering:  Heat uniformly and thoroughly at the selected tempering temperature, up to 660°C and hold at heat for two hours per inch of  total thickness. Tempering between 250-375°C in not recommended as this can seriously reduce the steels impact value.  Stress Relieving:  Heat slowly to 650-670°C, soak well before cooling the EN24 tool in a furnace or in air.       Mechanical Properties Heat Treatment Tensile Strength Rm N/mm² Yield Stress Re N/mm² a% on 5.665ÖSo Impact Izod J Impact KCV J Proof Stress rp0.2 Hardness HB Size mm T 850/1000 654 13 40 35 635 248/302 >150≤250 T 850/1000 680 13 54 50 665 248/302 >63≤250 U 925/1075 755 12 47 54 740 269/331 >29≤100 V 1000/1150 850 12 47 42 835 293/352 >13≤63 W 1075/1225 940 11 40 35 925 311/375 >6≤29 X 1150/1300 1020 10 34 28 1005 345/401 >6≤29 Z 1550 1235 5 10 9 1125 444 >6≤29      Available sections: