M2 / HS6-5-2 vs X40CrMoV5-1: 7% composition overlap. Significantly different materials serving different application areas.
M2 / HS6-5-2 vs X40CrMoV5-1
Side-by-side chemical composition and mechanical property comparison.
Overview
M2 / HS6-5-2
1.3343
The most widely used high-speed steel worldwide. W-Mo-Cr-V composition gives excellent red hardness (cuts at temperatures up to 600°C). Used for twist drills, end mills, taps, reamers, bandsaw blades, and general-purpose cutting tools. The benchmark HSS grade.
X40CrMoV5-1
1.2344
THE hot work tool steel — AISI H13 / JIS SKD61. 5% Cr + Mo + V for outstanding thermal fatigue resistance, red hardness above 40 HRC at 600°C, and excellent toughness. Air-hardening — uniform hardness in large sections with minimal distortion. Used for aluminum/zinc die casting dies, extrusion dies, forging dies, hot shear blades, and plastic molds. ESR grade available for critical applications.
| M2 / HS6-5-2 | X40CrMoV5-1 | |
|---|---|---|
| Material Number | 1.3343 | 1.2344 |
| Category | Tool Steel | Tool Steel |
| Standard | EN ISO 4957 | EN ISO 4957 |
Chemical composition (wt%) — Pro
| Element | M2 / HS6-5-2 | X40CrMoV5-1 | Overlap |
|---|---|---|---|
| C | 0.8–0.88% | 0.37–0.43% | No overlap |
| Si | 0–0.45% | 0.8–1.2% | No overlap |
| Mn | 0–0.4% | 0.2–0.5% | Partial |
| P | — | 0–0.03% | — |
| S | |||
| Cr | |||
| Mo | |||
| V | |||
| W |
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Sign up free — 3 comparisons/day freeMechanical properties — Pro
| Property | M2 / HS6-5-2 | X40CrMoV5-1 | Unit |
|---|---|---|---|
| Hardness HRC | 63–66 | 50–56 | HRC |
| Hardness HB | ≤ 248 | ≤ 235 | HB |
| Elastic Modulus | ≥ 210 | ≥ 210 | GPa |
| Density | |||
| Tensile Strength | |||
| Yield Strength | |||
| Elongation | |||
| Hardness HB | |||
| Hardness HRC | |||
| Tensile Strength | |||
| Density |
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Sign up free — 3 comparisons/day freeCompatibility Assessment
M2 / HS6-5-2 and X40CrMoV5-1 have significantly different compositions (7% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is M2 / HS6-5-2 the same as X40CrMoV5-1?
M2 / HS6-5-2 and X40CrMoV5-1 have a 7% composition overlap. They are generally not directly interchangeable.
Can I replace M2 / HS6-5-2 with X40CrMoV5-1?
Generally not recommended. The compositions differ significantly (7% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between M2 / HS6-5-2 and X40CrMoV5-1?
The main differences are in the following elements: C, Si, Mn, Cr. M2 / HS6-5-2 is a Tool Steel grade, while X40CrMoV5-1 is a Tool 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.