20MnCr5 vs 8620 / 20NiCrMo2-2: 54% composition overlap. Moderate differences, generally not direct substitutes.
20MnCr5 vs 8620 / 20NiCrMo2-2
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.
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.
| 20MnCr5 | 8620 / 20NiCrMo2-2 | |
|---|---|---|
| Material Number | 1.7147 | 1.6523 |
| Category | Alloy Steel | Alloy Steel |
| Standard | EN 10084 | EN 10084 |
Chemical composition (wt%)
| Element | 20MnCr5 | 8620 / 20NiCrMo2-2 | Overlap |
|---|---|---|---|
| C | 0.17–0.22% | 0.17–0.23% | OK |
| 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 | 20MnCr5 | 8620 / 20NiCrMo2-2 | Unit |
|---|---|---|---|
| hardness_hrc | 58–62 | 58–62 | HRC |
| tensile_strength | 900–1200 | 800–1100 | MPa |
| hardness_hb | ≤ 217 | ≤ 212 | HB |
Compatibility Assessment
20MnCr5 and 8620 / 20NiCrMo2-2 have moderate differences (54% 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 8620 / 20NiCrMo2-2?
20MnCr5 and 8620 / 20NiCrMo2-2 have a 54% composition overlap. They are generally not directly interchangeable.
Can I replace 20MnCr5 with 8620 / 20NiCrMo2-2?
Generally not recommended. The compositions differ significantly (54% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between 20MnCr5 and 8620 / 20NiCrMo2-2?
The main differences are in the following elements: Mn, Cr. 20MnCr5 is a Alloy Steel grade, while 8620 / 20NiCrMo2-2 is a Alloy Steel grade.
Related Comparisons
View full data for each material:
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.