D2 / X155CrVMo12-1 vs HS6-5-2: 34% composition overlap. Significantly different materials serving different application areas.
D2 / X155CrVMo12-1 vs HS6-5-2
Side-by-side chemical composition and mechanical property comparison.
Overview
D2 / X155CrVMo12-1
1.2379
Premium high-carbon high-chromium cold-work tool steel with vanadium and molybdenum. Air-hardening with minimal distortion. Superior wear resistance and edge retention. The global benchmark for cold stamping dies, blanking tools, shear blades, and forming tools.
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.
| D2 / X155CrVMo12-1 | HS6-5-2 | |
|---|---|---|
| Material Number | 1.2379 | 1.3343 |
| Category | Tool Steel | Tool Steel |
| Standard | EN ISO 4957 | EN ISO 4957 |
Chemical composition (wt%)
| Element | D2 / X155CrVMo12-1 | HS6-5-2 | Overlap |
|---|---|---|---|
| C | 1.45–1.6% | 0.8–0.88% | No overlap |
| Si | 0.1–0.4% | ≤ 0.45% | OK |
| Mn | 0.15–0.45% | ≤ 0.4% | Partial |
| P | 0–0.03% | ≤ 0.03% | OK |
Mechanical properties
| Property | D2 / X155CrVMo12-1 | HS6-5-2 | Unit |
|---|---|---|---|
| hardness_hrc | 58–62 | — | HRC |
| hardness_hb | ≤ 255 | — | HB |
| e_modulus | ≥ 210 | — | GPa |
Compatibility Assessment
D2 / X155CrVMo12-1 and HS6-5-2 have significantly different compositions (34% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is D2 / X155CrVMo12-1 the same as HS6-5-2?
D2 / X155CrVMo12-1 and HS6-5-2 have a 34% composition overlap. They are generally not directly interchangeable.
Can I replace D2 / X155CrVMo12-1 with HS6-5-2?
Generally not recommended. The compositions differ significantly (34% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between D2 / X155CrVMo12-1 and HS6-5-2?
The main differences are in the following elements: C, Mn, Cr, Mo. D2 / X155CrVMo12-1 is a Tool Steel grade, while HS6-5-2 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.