carbon-and-alloy-steel-EN24

EN24 is an extremely famous grade of through-hardening alloy steel, which is promptly machinable in the “T” condition. (Allude to our machinability guide).EN24T is most suitable for the assembling of parts, for example, heavy-duty axles and shafts, gears, bolts and studs. EN24T can be further surface-solidified normally to 58-60 HRC by induction or nitride forms, delivering parts with upgraded wear resistance.

It is therefore suggested that bigger sizes are supplied in the annealed (softened) condition, and that quenching and treating is done after introductory stock removal. This ought to accomplish better mechanical properties towards the core.

Chemical Composition

Element Min Max
Carbon, C 0.35 0.45%
Manganese, Mn 0.50 0.80%
Silicon, Si 0.10 0.35%
Nickel, Ni -.– -.–
Molybdenum, Mo 0.20 0.40%
Chromium, Cr 0.90 1.50%
Sulfur, S -.– 0.05
Phosphorous, P -.– 0.05

Mechanical PROPERTIES

Heat Treatment Tensile N/mm² Yield N/mm² Rp0.2 MPa Amin on 5.65 so Impact Hardness HB Limiting Ruling Section
Izod Ft.lp KCV J mm
T 850–1000 650 635 13 30 35 248–302 250
850–1000 680 665 40 50 248–302 150
V 1000–1150 850 835 12 35 42 293–352 63
W 1075–1225 940 925 11 30 35 311–375 29
X 1150–1300 1020 1005 10 25 28 341–401 29
Y 1225–1375 1095 1080 10 18 21 363–429 29
Z 1550 1235 1125 8 9 444 29 29

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