EN40B (722M24, nitriding) equivalents, chemistry & properties.
EN40B (722M24, nitriding) is a nitriding steel used for mostly used for nitrided gears, extruder and injection-moulding screws, shafts and spindles. Below are its equivalent designations in nine standards, chemical composition, mechanical properties and density.
EN40B (722M24, nitriding) equivalent grades
- UK (BS)
- 722M24 (EN40B)
- Europe (EN)
- 31CrMo12 (nearest)
- Werkstoff No. (W.Nr)
- 1.8515 (nearest)
- Russia (GOST)
- 30X3MF (nearest)
Key data
- Family
- Nitriding steel
- Density
- 7.85 g/cm³
- Typical mechanical
- Supplied Q&T (T condition about 850–1000 MPa); nitrided surface about 750–900 HV
- Typical uses
- Mostly used for nitrided gears, extruder and injection-moulding screws, shafts and spindles
- Weight
- Calculate weight in EN40B (722M24, nitriding)
EN40B (722M24, nitriding) chemical composition (weight %)
BS 970 722M24 (EN40B)
| C | Si | Mn | P | S | Cr | Mo |
|---|---|---|---|---|---|---|
| 0.2–0.28 | 0.1–0.35 | 0.45–0.7 | ≤0.035 | ≤0.04 | 3.0–3.5 | 0.45–0.65 |
BS 970:1955 En40B
| C | Si | Mn | P | S | Cr | Mo | Ni |
|---|---|---|---|---|---|---|---|
| 0.2–0.3 | 0.1–0.35 | 0.4–0.65 | ≤0.05 | ≤0.05 | 2.9–3.5 | 0.4–0.7 | ≤0.4 |
Grades similar to EN40B (722M24, nitriding)
Frequently asked questions
What is the equivalent of EN40B (722M24, nitriding)?
EN40B (722M24, nitriding) equivalents: UK (BS) 722M24 (EN40B); Europe (EN) 31CrMo12 (nearest); Werkstoff No. (W.Nr) 1.8515 (nearest); Russia (GOST) 30X3MF (nearest). Equivalents are close but not always identical; check the standard on your order.
What is the chemical composition of EN40B (722M24, nitriding)?
EN40B (722M24, nitriding) (BS 970 722M24 (EN40B)): C 0.2–0.28, Si 0.1–0.35, Mn 0.45–0.7, P ≤0.035, S ≤0.04, Cr 3.0–3.5, Mo 0.45–0.65 (weight %).
What is the density of EN40B (722M24, nitriding)?
About 7.85 g/cm³ (7,850 kg/m³), the value used for weight calculations.
Need EN40B (722M24, nitriding)?
Steel Impex India, Mumbai, supplies EN40B (722M24, nitriding) in pipes, plates, sheets, bars and fittings as available, with mill test certificates. Send the grade, standard, size and quantity.