20MnCr5 vs 22MnB5: 57% composition overlap. Moderate differences, generally not direct substitutes.
20MnCr5 vs 22MnB5
Side-by-side chemical composition and mechanical property comparison.
Overview
20MnCr5
1.7147
Manganese-chromium case-hardening steel with higher core strength than 16MnCr5. Used for heavily loaded gears, shafts, camshafts, and transmission components requiring high surface hardness with tough core. Popular in automotive and heavy machinery.
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.
| 20MnCr5 | 22MnB5 | |
|---|---|---|
| Material Number | 1.7147 | 1.5528 |
| Category | Alloy Steel | Alloy Steel |
| Standard | EN 10084 | EN 10083-3 |
Chemical composition (wt%)
| Element | 20MnCr5 | 22MnB5 | Overlap |
|---|---|---|---|
| C | 0.17–0.22% | 0.2–0.25% | Partial |
| Si | 0–0.4% | 0–0.4% | OK |
| Mn | 1.1–1.4% | 1.1–1.4% | OK |
| P | 0–0.025% | 0–0.025% | OK |
Mechanical properties
| Property | 20MnCr5 | 22MnB5 | Unit |
|---|---|---|---|
| hardness_hrc | 58–62 | 42–50 | HRC |
| tensile_strength | 900–1200 | 450–750 | MPa |
| hardness_hb | ≤ 217 | — | HB |
Compatibility Assessment
20MnCr5 and 22MnB5 have moderate differences (57% overlap). They are generally not direct substitutes. Consider the specific requirements of your application.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 20MnCr5 the same as 22MnB5?
20MnCr5 and 22MnB5 have a 57% composition overlap. They are generally not directly interchangeable.
Can I replace 20MnCr5 with 22MnB5?
Generally not recommended. The compositions differ significantly (57% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 20MnCr5 and 22MnB5?
The main differences are in the following elements: C, Cr. 20MnCr5 is a Alloy Steel grade, while 22MnB5 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.