16MnCr5 vs 51CrV4: 71% composition overlap. Some similarities but notable differences in alloying elements.
16MnCr5 vs 51CrV4
Side-by-side chemical composition and mechanical property comparison.
Overview
16MnCr5
1.7131
Low-carbon case-hardening steel with manganese and chromium. Excellent for carburizing to produce a hard, wear-resistant surface with a tough core. Standard choice for gears, camshafts, piston pins, and transmission components.
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.
| 16MnCr5 | 51CrV4 | |
|---|---|---|
| Material Number | 1.7131 | 1.8159 |
| Category | Alloy Steel | Alloy Steel |
| Standard | EN 10084 | EN 10089 |
Chemical composition (wt%)
| Element | 16MnCr5 | 51CrV4 | Overlap |
|---|---|---|---|
| C | 0.14–0.19% | 0.47–0.55% | No overlap |
| Si | 0–0.4% | 0–0.4% | OK |
| Mn | 1–1.3% | 0.7–1.1% | Partial |
| P | 0–0.025% | 0–0.025% | OK |
Mechanical properties
| Property | 16MnCr5 | 51CrV4 | Unit |
|---|---|---|---|
| tensile_strength | 800–1100 | 1100–1300 | MPa |
| yield_strength | ≥ 590 | ≥ 900 | MPa |
| elongation | ≥ 10 | ≥ 9 | % |
Compatibility Assessment
16MnCr5 and 51CrV4 share some characteristics (71% overlap) but have notable differences. They may be substitutable in some applications but not all. Verify suitability carefully.
Automated assessment based on composition analysis
Frequently Asked Questions
Is 16MnCr5 the same as 51CrV4?
16MnCr5 and 51CrV4 have a 71% composition overlap. For most purposes, they can be considered similar.
Can I replace 16MnCr5 with 51CrV4?
In many cases, yes. The compositions overlap significantly (71%). However, always verify mechanical property requirements and heat treatment compatibility for your specific application.
What is the difference between 16MnCr5 and 51CrV4?
The main differences are in the following elements: C, Mn, Cr. 16MnCr5 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.