A2 / X100CrMoV5 vs X155CrVMo12-1: 18% composition overlap. Significantly different materials serving different application areas.
A2 / X100CrMoV5 vs X155CrVMo12-1
Side-by-side chemical composition and mechanical property comparison.
Overview
A2 / X100CrMoV5
1.2363
Air-hardening cold-work tool steel. Combines good wear resistance with excellent dimensional stability during heat treatment (minimal distortion). Used for punching/blanking dies, forming tools, shear blades, gauges, and precision tooling where low distortion is critical.
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.
| A2 / X100CrMoV5 | X155CrVMo12-1 | |
|---|---|---|
| Material Number | 1.2363 | 1.2379 |
| Category | Tool Steel | Tool Steel |
| Standard | EN ISO 4957 | EN ISO 4957 |
Chemical composition (wt%)
| Element | A2 / X100CrMoV5 | X155CrVMo12-1 | Overlap |
|---|---|---|---|
| C | 0.95–1.05% | 1.5–1.6% | No overlap |
| Si | 0.1–0.4% | 0.1–0.6% | OK |
| Mn | 0.4–0.8% | 0.2–0.6% | Partial |
| P | — | ≤ 0.03% | — |
Mechanical properties
| Property | A2 / X100CrMoV5 | X155CrVMo12-1 | Unit |
|---|---|---|---|
| hardness_hrc | 57–62 | 58–62 | HRC |
| hardness_hb | ≤ 229 | ≤ 255 | HB |
| e_modulus | ≥ 210 | — | GPa |
Compatibility Assessment
A2 / X100CrMoV5 and X155CrVMo12-1 have significantly different compositions (18% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is A2 / X100CrMoV5 the same as X155CrVMo12-1?
A2 / X100CrMoV5 and X155CrVMo12-1 have a 18% composition overlap. They are generally not directly interchangeable.
Can I replace A2 / X100CrMoV5 with X155CrVMo12-1?
Generally not recommended. The compositions differ significantly (18% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between A2 / X100CrMoV5 and X155CrVMo12-1?
The main differences are in the following elements: C, Mn, Cr, Mo. A2 / X100CrMoV5 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.