22MnB5 vs 8620 / 20NiCrMo2-2: 41% composition overlap. Significantly different materials serving different application areas.
22MnB5 vs 8620 / 20NiCrMo2-2
Side-by-side chemical composition and mechanical property comparison.
Overview
22MnB5
1.5528
THE 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.
8620 / 20NiCrMo2-2
1.6523
Nickel-chromium-molybdenum case-hardening steel. Good combination of core toughness and case hardness. The most widely used case-hardening steel in the US (AISI 8620). Used for gears, pinions, worm drives, king pins, and cross-shafts.
| 22MnB5 | 8620 / 20NiCrMo2-2 | |
|---|---|---|
| Material Number | 1.5528 | 1.6523 |
| Category | Alloy Steel | Alloy Steel |
| Standard | EN 10083-3 | EN 10084 |
Chemical composition (wt%)
| Element | 22MnB5 | 8620 / 20NiCrMo2-2 | Overlap |
|---|---|---|---|
| C | 0.2–0.25% | 0.17–0.23% | Partial |
| Si | 0–0.4% | 0–0.4% | OK |
| Mn | 1.1–1.4% | 0.65–0.95% | No overlap |
| P | 0–0.025% | 0–0.025% | OK |
Mechanical properties
| Property | 22MnB5 | 8620 / 20NiCrMo2-2 | Unit |
|---|---|---|---|
| tensile_strength | 450–750 | 800–1100 | MPa |
| yield_strength | 300–600 | — | MPa |
| elongation | 12–18 | — | % |
Compatibility Assessment
22MnB5 and 8620 / 20NiCrMo2-2 have significantly different compositions (41% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 22MnB5 the same as 8620 / 20NiCrMo2-2?
22MnB5 and 8620 / 20NiCrMo2-2 have a 41% composition overlap. They are generally not directly interchangeable.
Can I replace 22MnB5 with 8620 / 20NiCrMo2-2?
Generally not recommended. The compositions differ significantly (41% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 22MnB5 and 8620 / 20NiCrMo2-2?
The main differences are in the following elements: C, Mn, Cr. 22MnB5 is a Alloy Steel grade, while 8620 / 20NiCrMo2-2 is a Alloy Steel grade.
Related Comparisons
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Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.