Material Specifications
| Standard | BS 970 EN24 / AISI 4340 / DIN 36CrNiMo4 |
|---|---|
| Type | Ni-Cr-Mo Alloy Steel (High Tensile) |
| Carbon | 0.36–0.44% C |
| Nickel | 1.30–1.70% Ni |
| Chromium | 1.00–1.40% Cr |
| Molybdenum | 0.20–0.35% Mo |
| Tensile Strength | 1000–1150 MPa (H&T) |
| Yield Strength | ≥ 850 MPa |
| Fatigue Resistance | Excellent |
| Forms Available | Rounds |
When to choose EN24 over EN19: EN24 provides higher tensile and impact strength due to its nickel addition — use it for applications with high shock loads or where EN19 is at its limit.
Typical Applications
Connecting Rods — Engine connecting rods for high-performance and heavy machinery
Heavy-Duty Shafts — Large diameter shafts in steel mills, mining, and heavy equipment
Aerospace & Defence — High-stress structural and fastener components
Crane & Lift Components — Hooks, pins, lifting gear where fatigue and shock resistance matters