X153CrMoV12
1.2379High-carbon high-chromium ledeburitic cold work tool steel — AISI D2. 12% Cr + 1.5% C forms massive M7C3 carbides giving outstanding wear resistance and cutting edge retention. Air-hardening with minimal distortion. Lower toughness than H13. Used for blanking/stamping dies, thread rolling dies, cold forming tools, slitting cutters, and wear parts. Also popular as high-end knife steel.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AISI | USA | AISI D2 / UNS T30402 | T30402 | REF |
| 🇪🇺 | EN | Europe | X153CrMoV12 / 1.2379 | 1.2379 | 100% |
| 🇯🇵 | JIS | Japan | SKD11 | — | 95% |
| 🇨🇳 | GB | China | Cr12Mo1V1 | — | 90% |
Sources: ASTM A681, EN ISO 4957, JIS G4404, GB/T 1299
Mechanical properties — Pro
Hardened Tempered
| Property | Value | Unit |
|---|---|---|
| Hardness HRC | ||
| Tensile Strength | ||
| Elastic Modulus | ||
| Density |
Annealed
| Property | Value | Unit |
|---|---|---|
| Hardness HB |
Annealed
| Property | Value | Unit |
|---|---|---|
| Hardness HB |
Hardened + Tempered
| Property | Value | Unit |
|---|---|---|
| Hardness HRC |
General
| Property | Value | Unit |
|---|---|---|
| Density |
Sign up free and get 5 full lookups immediately.
Sign up free — 5 lookups/day freeRelated materials
P20 / 40CrMnMo7
1.2311Pre-hardened plastic mold steel (usually delivered at 28-34 HRC). The most widely used mold base steel globally. Good machinability in pre-hardened condition, good polishability. Used for injection molds, die-casting dies, extrusion tooling, and structural mold components.
M2 / HS6-5-2
1.3343The most widely used high-speed steel worldwide. W-Mo-Cr-V composition gives excellent red hardness (cuts at temperatures up to 600°C). Used for twist drills, end mills, taps, reamers, bandsaw blades, and general-purpose cutting tools. The benchmark HSS grade.
X45NiCrMo4
1.2767Nickel cold-work tool steel with exceptional toughness from ~4% Ni content. Excellent through-hardenability, polishability, and impact resistance. Used for plastic injection molds (high-gloss), embossing dies, scrap shear blades, punches, cutlery dies, and bending tools.
Not sure which material fits?
🤖 Ask AI Advisor →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.