D2 / X155CrVMo12-1 vs X210Cr12: Same family — D2 adds Mo and V for better toughness
D2 / X155CrVMo12-1 vs X210Cr12
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.
X210Cr12
1.2080
High-carbon high-chromium cold-work tool steel. Excellent wear resistance and dimensional stability after heat treatment. Used for blanking and forming dies, drawing mandrels, gauges, shear blades, and thread rolling dies. Not suitable for impact loading.
| D2 / X155CrVMo12-1 | X210Cr12 | |
|---|---|---|
| Material Number | 1.2379 | 1.2080 |
| Category | Tool Steel | Tool Steel |
| Standard | EN ISO 4957 | EN ISO 4957 |
Chemical composition (wt%)
| Element | D2 / X155CrVMo12-1 | X210Cr12 | Overlap |
|---|---|---|---|
| C | 1.45–1.6% | 1.9–2.2% | No overlap |
| Si | 0.1–0.4% | 0.1–0.4% | OK |
| Mn | 0.15–0.45% | 0.2–0.6% | Partial |
| P | 0–0.03% | 0–0.03% | OK |
Mechanical properties
| Property | D2 / X155CrVMo12-1 | X210Cr12 | Unit |
|---|---|---|---|
| hardness_hrc | 58–62 | 58–64 | HRC |
| hardness_hb | ≤ 255 | ≤ 255 | HB |
| e_modulus | ≥ 210 | ≥ 210 | GPa |
Compatibility Assessment
Both are high-C high-Cr cold-work steels. D2 (1.2379) adds 0.7-1.0% Mo and 0.7-1.1% V for superior toughness and secondary hardening. X210Cr12 (1.2080) has higher C (1.9-2.2%) for maximum wear resistance but lower toughness.
Frequently Asked Questions
Is D2 / X155CrVMo12-1 the same as X210Cr12?
D2 / X155CrVMo12-1 and X210Cr12 have a 75% composition overlap. Same family — D2 adds Mo and V for better toughness
Can I replace D2 / X155CrVMo12-1 with X210Cr12?
In many cases, yes. The compositions overlap significantly (75%). However, always verify mechanical property requirements and heat treatment compatibility for your specific application.
What is the difference between D2 / X155CrVMo12-1 and X210Cr12?
The main differences are in the following elements: C, Mn, V. D2 / X155CrVMo12-1 is a Tool Steel grade, while X210Cr12 is a Tool Steel grade.
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