16Mo3
1.5415Molybdenum-alloyed pressure vessel steel — THE European Mo-Kesselblech. Mo 0.25-0.35% improves creep resistance and elevated-temperature strength to ~500°C (higher than P265GH at ~400°C). Used for superheater tubes, boiler drums, steam piping, and heat exchangers in power generation. EN 10028-2 + PED.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | ASTM | USA | ASTM A204 Gr.B (approximate) | — | REF |
| 🇪🇺 | EN | Europe | 16Mo3 / 1.5415 | 1.5415 | 100% |
Sources: ASTM A204, EN 10028-2
Chemical composition comparison (wt%)
Side-by-side: 16Mo3 (EN) (EN 10028-2) vs 16Mo3 / 1.5415 (EN) (EN 10028-2)
| Element | 16Mo3 (EN) | 16Mo3 / 1.5415 (EN) | Overlap |
|---|---|---|---|
| C | 0.12–0.2% | 0.12–0.2% | OK |
| Si | 0–0.35% | 0–0.35% | OK |
| Mn | 0.4–0.9% | 0.4–0.9% | OK |
| P | 0–0.025% | 0–0.025% | OK |
| S | 0–0.01% | 0–0.01% | OK |
| Mo | 0.25–0.35% | 0.25–0.35% | OK |
Mechanical properties
Normalized
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 440–590 | MPa |
| Yield Strength | ≥ 275 | MPa |
| Elongation | ≥ 22 | % |
| Elastic Modulus | ≥ 210 | GPa |
| Density | ≥ 7.85 | g/cm3 |
Compatibility verdict
16Mo3 and 16Mo3 / 1.5415: 100% composition match
Close equivalents but NOT identical.
Related materials
S355JR
1.0045High-strength low-alloy structural steel with minimum yield strength of 355 MPa. Standard grade for bridges, buildings, cranes, and general structural applications. Impact tested at +20°C (JR).
S690QL
1.8928High-strength quenched and tempered fine-grain structural steel with minimum yield strength of 690 MPa. Used for heavily loaded structures like mobile cranes, mining equipment, bridges, and pressure vessels.
S275JR
1.0044Medium-strength structural steel with minimum yield strength of 275 MPa. Bridges the gap between S235JR and S355JR. Used for general structural applications, lattice towers, masts, and light crane components. Impact tested at +20°C (JR).
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