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16NiCr4

1.5714
alloy_steelcase_hardening
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Nickel-chromium case hardening steel — Ni 0.8-1.1%, Cr 0.6-1.0%, no Mo. Between 16MnCr5 (Mn-Cr) and 14NiCr14 (high-Ni) in hardenability. Better core toughness than 16MnCr5 due to Ni. Used for heavy-duty sprockets, pinions, worms, pins, and shafts requiring case-hardened surface (HRC 58-62) with tough core. EN 10084 standard.

International equivalents

FlagStandardCountryGradeNumberMatch
🇬🇧BSUnited Kingdom637M17—REF
🇪🇺ENEurope16NiCr4 / 1.57141.5714100%

Sources: BS 970, EN 10084

Chemical composition comparison (wt%)

Side-by-side: 16NiCr4 (EN 10084) vs 16NiCr4 / 1.5714 (EN) (EN 10084)

Element16NiCr4 (EN 10084)16NiCr4 / 1.5714 (EN)Overlap
C—0.13–0.19%—
Si—0–0.4%—

Mechanical properties

Compatibility verdict

16NiCr4 and 16NiCr4 / 1.5714: 100% composition match

Related materials

42CrMo4

1.7225
cr_mo

High-strength quenched and tempered chromium-molybdenum steel. Widely used for shafts, gears, crankshafts, connecting rods, and high-strength bolts. Excellent hardenability and good fatigue resistance.

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

34CrNiMo6

1.6582
cr_ni_mo

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

1.7131
case_hardening

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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