EN 19 Alloy Steel
Comparable Standards
| Designation | Standard |
| AISI/SAE | 4140 |
| DIN | 1.7225 |
| UNS | G41400 |
Chemical Composition (wt %)
| C | Si | Mn | P (max) | S (max) | Cr | Mo | V |
| 0.38–0.43 | 0.15–0.35 | 0.75–1.00 | 0.035 | 0.040 | 0.80–1.10 | 0.15–0.25 | – |
Mechanical Properties
| Property | Value |
| Typical Hardness | 28–32 HRC |
| Tensile Strength | 655–1080 MPa |
Heat Treatment Guidelines
– Annealing: 830–860 °C; furnace cool
– Quench: 815–845 °C; oil quench
– Tempering: 540–680 °C; based on desired hardness
Typical Applications
– Axles
– Couplings
– Fasteners
– Crankshafts
Supply Formats & Services
– Stocked Shapes: Rounds (20 – 350 mm Ø), Flats (25 × 50 – 200 × 500 mm), Blocks (up to 2,000 kg)
– Custom Cutting: Precision bandsaw to drawing