22MnB5
1.5528THE press hardening (hot stamping) boron steel — used in virtually every modern car for B-pillars, bumper beams, and side impact reinforcements. As-delivered: ferritic-pearlitic, UTS 450-750 MPa, formable. After hot stamping + die quenching: fully martensitic, UTS 1300-1650 MPa. Boron (0.002-0.005%) provides critical hardenability at low cost. Usually AlSi or Zn coated to prevent oxidation during austenitizing at 880-950°C.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇪🇺 | EN | Europe | 22MnB5 / 1.5528 | 1.5528 | 100% |
| 🇩🇪 | VDA | Germany | CR1100T-MB (VDA 239-500) | — | 95% |
Sources: EN 10083-3, VDA 239-500
Mechanical properties
Compatibility verdict
22MnB5 and CR1100T-MB (VDA 239-500): 95% composition match
Related materials
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1.7225High-strength quenched and tempered chromium-molybdenum steel. Widely used for shafts, gears, crankshafts, connecting rods, and high-strength bolts. Excellent hardenability and good fatigue resistance.
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16MnCr5
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