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20MnCrS5

1.7149
alloy_steelcase_hardening
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Free-cutting variant of 20MnCr5 with controlled sulfur (0.020-0.040%). Improved machinability for high-volume gear production without significant loss of mechanical properties. The standard free-cutting case-hardening steel in European automotive gear manufacturing.

International equivalents

FlagStandardCountryGradeNumberMatch
🇪🇺ENEurope20MnCrS51.7149100%
🇪🇺ENEurope20MnCr5 (base)1.714795%

Sources: EN 10084:2008, EN 10084

Chemical composition comparison (wt%)

Side-by-side: 20MnCrS5 (EN 10084) vs 20MnCr5 (base) (EN) (EN 10084:2008)

Element20MnCrS5 (EN 10084)20MnCr5 (base) (EN)Overlap
C—0.17–0.22%—
Si—0–0.4%—

Mechanical properties

Compatibility verdict

20MnCrS5 and 20MnCr5 (base): 95% composition match

Related materials

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🇪🇺 42CrMo4🇫🇷 42CD4🇬🇧 708M40 / EN19🇯🇵 SCM440

34CrNiMo6

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🇪🇺 34CrNiMo6🇨🇳 34CrNiMo6🇬🇧 817M40 / EN24🇯🇵 SNCM439

16MnCr5

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Low-carbon case-hardening steel with manganese and chromium. Excellent for carburizing to produce a hard, wear-resistant surface with a tough core. Standard choice for gears, camshafts, piston pins, and transmission components.

🇪🇺 16MnCr5🇫🇷 16MC5🇨🇳 16MnCr5🇯🇵 SCr415
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