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X40CrMoV5-1

1.2344
tool_steelhot_work
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THE hot work tool steel — AISI H13 / JIS SKD61. 5% Cr + Mo + V for outstanding thermal fatigue resistance, red hardness above 40 HRC at 600°C, and excellent toughness. Air-hardening — uniform hardness in large sections with minimal distortion. Used for aluminum/zinc die casting dies, extrusion dies, forging dies, hot shear blades, and plastic molds. ESR grade available for critical applications.

International equivalents

FlagStandardCountryGradeNumberMatch
🇺🇸AISIUSAAISI H13 / UNS T20813T20813REF
🇪🇺ENEuropeX40CrMoV5-1 / 1.23441.2344100%
🇯🇵JISJapanSKD61—100%

Sources: ASTM A681, EN ISO 4957, JIS G4404

Chemical composition comparison (wt%)

Side-by-side: X40CrMoV5-1 (EN ISO 4957) vs X40CrMoV5-1 / 1.2344 (EN) (EN ISO 4957)

ElementX40CrMoV5-1 (EN ISO 4957)X40CrMoV5-1 / 1.2344 (EN)Overlap
C—0.37–0.43%—
Si—0.8–1.2%—

Mechanical properties

Compatibility verdict

X40CrMoV5-1 and X40CrMoV5-1 / 1.2344: 100% composition match

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