X37CrMoV5-1
1.2343Chromium hot work tool steel, known as AISI H11. Similar to 1.2344 (H13) but with lower V content (0.30–0.50% vs 0.85–1.15%) giving better toughness at the expense of slightly lower wear resistance. Better suited for applications requiring maximum toughness — large forging dies, die casting dies for light alloys, extrusion tools. Air-hardening to 50–54 HRC. Preferred over H13 when thermal shock resistance is the primary concern.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AISI | USA | H11 | T20811 | REF |
| 🇯🇵 | JIS | Japan | SKD6 | — | 90% |
Sources: ASTM A681, JIS G4404
Mechanical properties
Compatibility verdict
X37CrMoV5-1 and SKD6: 90% composition match
Related materials
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