A2 / X100CrMoV5
1.2363Air-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.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AISI | USA | AISI A2 | T30102 | REF |
| 🇪🇺 | EN | Europe | X100CrMoV5 | 1.2363 | 100% |
| 🇯🇵 | JIS | Japan | SKD12 | — | 90% |
Sources: ASTM A681, EN ISO 4957, JIS G4404
Mechanical properties — Pro
Hardened Tempered
| Property | Value | Unit |
|---|---|---|
| Hardness HRC | ||
| Elastic Modulus | ||
| Density |
Annealed
| Property | Value | Unit |
|---|---|---|
| Hardness HB |
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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.
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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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