22MnB5 vs 51CrV4: 31% composition overlap. Significantly different materials serving different application areas.
22MnB5 vs 51CrV4
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.
51CrV4
1.8159
Chromium-vanadium spring steel. The most important European spring steel grade. Excellent fatigue resistance and high elastic limit after heat treatment. Used for coil springs, leaf springs, torsion bars, anti-roll bars, and high-strength fasteners.
| 22MnB5 | 51CrV4 | |
|---|---|---|
| Material Number | 1.5528 | 1.8159 |
| Category | Alloy Steel | Alloy Steel |
| Standard | EN 10083-3 | EN 10089 |
Chemical composition (wt%)
| Element | 22MnB5 | 51CrV4 | Overlap |
|---|---|---|---|
| C | 0.2–0.25% | 0.47–0.55% | No overlap |
| Si | 0–0.4% | 0–0.4% | OK |
| Mn | 1.1–1.4% | 0.7–1.1% | Partial |
| P | 0–0.025% | 0–0.025% | OK |
Mechanical properties
| Property | 22MnB5 | 51CrV4 | Unit |
|---|---|---|---|
| tensile_strength | 450–750 | 1100–1300 | MPa |
| yield_strength | 300–600 | ≥ 900 | MPa |
| elongation | 12–18 | ≥ 9 | % |
Compatibility Assessment
22MnB5 and 51CrV4 have significantly different compositions (31% 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 51CrV4?
22MnB5 and 51CrV4 have a 31% composition overlap. They are generally not directly interchangeable.
Can I replace 22MnB5 with 51CrV4?
Generally not recommended. The compositions differ significantly (31% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 22MnB5 and 51CrV4?
The main differences are in the following elements: C, Mn, Cr. 22MnB5 is a Alloy Steel grade, while 51CrV4 is a Alloy Steel grade.
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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.