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34CrS4

1.7037
alloy_steelquenched_tempered
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Free-cutting variant of 34Cr4 (1.7033) — sulfur addition (0.020-0.040%) for improved machinability on CNC automatics. Same QT properties as 34Cr4. Used for shafts, spindles, bolts, studs, and automotive components in high volume on automatic lathes.

International equivalents

FlagStandardCountryGradeNumberMatch
🇺🇸AISIUSAAISI 5132 (approx)—REF
🇪🇺ENEurope34CrS4 / 1.70371.7037100%

Sources: ASTM A29, EN 10083-3

Chemical composition comparison (wt%)

Side-by-side: 34CrS4 (EN 10083-3) vs 34CrS4 / 1.7037 (EN) (EN 10083-3)

Element34CrS4 (EN 10083-3)34CrS4 / 1.7037 (EN)Overlap
C—0.31–0.38%—
Si—0–0.4%—

Mechanical properties

Compatibility verdict

34CrS4 and 34CrS4 / 1.7037: 100% composition match

Related materials

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cr_mo

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

34CrNiMo6

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High-strength quenched and tempered Cr-Ni-Mo steel. Excellent hardenability and toughness, suitable for large cross-sections. Used for heavy-duty shafts, gears, turbine parts, and aerospace components.

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

16MnCr5

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