EN24 Steel Billets
EN24 (817M40) nickel-chromium-molybdenum steel. A high strength, deep hardening steel with very good toughness, used where heavy sections must harden right through.
EN24 chemical composition
| C | 0.35 – 0.45 % |
|---|---|
| Si | 0.10 – 0.35 % |
| Mn | 0.45 – 0.70 % |
| Ni | 1.30 – 1.80 % |
| Cr | 0.90 – 1.40 % |
| Mo | 0.20 – 0.35 % |
Indicative ranges from the common grade standard. The final analysis is as per the order and the heat test certificate.
Equivalent grades
817M40 (BS 970) · SAE 4340 · 34CrNiMo6 approx.
Equivalents are approximate. See the grade equivalents guide.
EN24 billets and blooms
EN24 billets and blooms are specified where toughness and through-hardening in heavy sections matter.
Kesari Alloys supplies EN24 as continuous cast billets and blooms from 100 × 100 to 250 × 250 mm and 200 mm round, in lengths up to 12 metres. See the billet size chart for weight per metre.
Heat treatment: Hardened and tempered. Deep hardenability makes it suitable for large sections.
Typical uses of EN24
- Heavy shafts and axles
- Large gears
- Aerospace-type and defence-type structural parts (subject to specification)
- High stress forgings
Industries: forging, sugar mill shafts and rollers, power plant components, earth moving machinery, gears and shafts, heavy engineering.
Related grades
EN24 questions
What is EN24 steel used for?
EN24 is used for heavy shafts and axles, large gears, aerospace-type and defence-type structural parts (subject to specification), high stress forgings.
What is the equivalent of EN24?
817M40 (BS 970) · SAE 4340 · 34CrNiMo6 approx.. Equivalents are approximate, so check the limits in your specification.
Does Kesari Alloys supply EN24 billets?
Yes. EN24 is available as continuous cast billets and blooms (100 to 250 mm and 200 mm round, up to 12 m). Send the size, length, quantity and standard to info@ksl.in for a quotation.