H13 / X40CrMoV5-1
1.2344The most widely used hot-work tool steel globally. Excellent combination of hot hardness, toughness, and thermal fatigue resistance. Used for die-casting dies (aluminum, zinc, magnesium), forging dies, extrusion tooling, and hot shear blades.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AISI | USA | AISI H13 | T20813 | REF |
| 🇪🇺 | EN | Europe | X40CrMoV5-1 | 1.2344 | 100% |
| 🇯🇵 | JIS | Japan | SKD61 | — | 97% |
| 🇨🇳 | GB | China | 4Cr5MoSiV1 | — | 93% |
| 🇷🇺 | GOST | Russia | 4Kh5MFS | — | 88% |
Sources: ASTM A681, EN ISO 4957, JIS G4404, GB/T 1299, GOST 5950
Mechanical properties — Pro
QT
| Property | Value | Unit |
|---|---|---|
| Hardness HRC | ||
| Elastic Modulus | ||
| Density |
Annealed
| Property | Value | Unit |
|---|---|---|
| Hardness HB |
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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.
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