HS6-5-2 vs X40CrMoV5-1: 26% composition overlap. Significantly different materials serving different application areas.
HS6-5-2 vs X40CrMoV5-1
Side-by-side chemical composition and mechanical property comparison.
Overview
HS6-5-2
1.3343
The most widely used high-speed steel worldwide, known as AISI M2. Contains 6% W, 5% Mo and 2% V providing excellent red hardness (retains cutting ability at 600°C+), high wear resistance and good toughness. Hardened to 62–65 HRC. Standard material for twist drills, milling cutters, taps, reamers, broaches, saw blades, cold forming tools and punches. PM (powder metallurgy) variants available for improved toughness and grindability.
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.
| 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%)
| Element | HS6-5-2 | X40CrMoV5-1 | Overlap |
|---|---|---|---|
| C | 0.8–0.88% | 0.37–0.43% | No overlap |
| Si | ≤ 0.45% | 0.8–1.2% | No overlap |
| Mn | ≤ 0.4% | 0.2–0.5% | Partial |
| P | ≤ 0.03% | 0–0.03% | OK |
Mechanical properties
| Property | HS6-5-2 | X40CrMoV5-1 | Unit |
|---|---|---|---|
| Hardness HB | ≤ 255 | ≤ 235 | HB |
| Hardness HRC | 62–65 | 50–53 | HRC |
| Density | 8.16 | 7.8 | g/cm³ |
Compatibility Assessment
HS6-5-2 and X40CrMoV5-1 have significantly different compositions (26% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is HS6-5-2 the same as X40CrMoV5-1?
HS6-5-2 and X40CrMoV5-1 have a 26% composition overlap. They are generally not directly interchangeable.
Can I replace HS6-5-2 with X40CrMoV5-1?
Generally not recommended. The compositions differ significantly (26% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between HS6-5-2 and X40CrMoV5-1?
The main differences are in the following elements: C, Si, Mn, Cr. 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.