HS6-5-2 vs X155CrVMo12-1: 32% composition overlap. Significantly different materials serving different application areas.
HS6-5-2 vs X155CrVMo12-1
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.
X155CrVMo12-1
1.2379
High-performance cold work tool steel with 12% Cr for exceptional wear resistance and good toughness. Air or oil hardening. The most widely used high-alloy cold work steel for demanding stamping and forming applications. Achieves 58-62 HRC. Used for blanking dies, punching tools, cold-forming dies, thread rolling dies, deep drawing tools, and industrial knives for heavy-gauge sheet. Similar to AISI D2 but with optimized V content.
| HS6-5-2 | X155CrVMo12-1 | |
|---|---|---|
| Material Number | 1.3343 | 1.2379 |
| Category | Tool Steel | Tool Steel |
| Standard | EN ISO 4957 | EN ISO 4957 |
Chemical composition (wt%)
| Element | HS6-5-2 | X155CrVMo12-1 | Overlap |
|---|---|---|---|
| C | 0.8–0.88% | 1.5–1.6% | No overlap |
| Si | ≤ 0.45% | 0.1–0.6% | Partial |
| Mn | ≤ 0.4% | 0.2–0.6% | Partial |
| P | ≤ 0.03% | ≤ 0.03% | OK |
Mechanical properties
| Property | HS6-5-2 | X155CrVMo12-1 | Unit |
|---|---|---|---|
| Hardness HB | ≤ 255 | — | HB |
| Hardness HRC | 62–65 | — | HRC |
| Density | 8.16 | — | g/cm³ |
Compatibility Assessment
HS6-5-2 and X155CrVMo12-1 have significantly different compositions (32% 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 X155CrVMo12-1?
HS6-5-2 and X155CrVMo12-1 have a 32% composition overlap. They are generally not directly interchangeable.
Can I replace HS6-5-2 with X155CrVMo12-1?
Generally not recommended. The compositions differ significantly (32% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between HS6-5-2 and X155CrVMo12-1?
The main differences are in the following elements: C, Si, Mn, Cr. HS6-5-2 is a Tool Steel grade, while X155CrVMo12-1 is a Tool Steel grade.
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.