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60SiCr7

1.7108
alloy_steelspring_steel
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Silicon-chromium valve spring steel — the highest fatigue life among EN 10089 spring steels. High Si (1.50-1.80%) provides excellent resistance to relaxation at elevated temperatures (up to ~250°C). Superior to 51CrV4 for high-stress, high-cycle applications. Used for automotive valve springs, heavy-duty coil springs, torsion bars, and stabilizers. ≈ AISI 9260.

International equivalents

FlagStandardCountryGradeNumberMatch
🇺🇸AISIUSAAISI 9260—REF
🇪🇺ENEurope61SiCr7 / 60SiCr71.7108100%

Sources: ASTM A29, EN 10089

Chemical composition comparison (wt%)

Side-by-side: 60SiCr7 (EN 10089) vs 61SiCr7 / 60SiCr7 (EN) (EN 10089)

Element60SiCr7 (EN 10089)61SiCr7 / 60SiCr7 (EN)Overlap
C—0.57–0.65%—
Si—1.5–1.8%—

Mechanical properties

Compatibility verdict

60SiCr7 and 61SiCr7 / 60SiCr7: 100% composition match

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