1.5714, 16NiCr4, 637M17


1.5714, 16NiCr4, 637M17 acc. to EN 10084: 2008 Case hardening steels

1.5714, 16NiCr4, 637M17 - Introduction and Application

1.5714, 16NiCr4, 637M17 EN 10084: 2008 Case hardening carburizing steel application on parts requiring high core strength, structures subject to abrasion and variable loads, typically used for small parts such as heavy-duty sprockets, screws, pins, shafts, spigots, machine parts, cars and motors.


Melted process

EF+LF+VD


1.5714, 16NiCr4, 637M17 - Chemical composition WT %

GradeChemical composition WT %
CMnSiPSCrMoNiCu
1.5714, 16NiCr40.13 - 0.190.70 - 1.00max 0.40max 0.025max 0.0350.60 - 1.00
0.80 - 1.10
1.5715, 16NiCrS40.13 - 0.190.7 - 1.0max 0.4max 0.0250.02 - 0.040.6 - 1.0
0.8 - 1.1
637H17, 637M170.14 - 0.200.60 - 0.900.10 - 0.35max 0.035max 0.040.60 - 1.00
0.85 - 1.25
18ChGN1, 18KhGN1, 18ХГН10.16 - 0.210.60 - 0.90max 0.40max 0.025max 0.0350.90 - 1.20
1.20 - 1.50
19ChGN, 19KhGN, 19ХГН0.16 - 0.210.70 - 1.000.17 - 0.37max 0.035max 0.0350.80 - 1.10max 0.10.80 - 1.10max 0.3

Mechanical Property of 1.5714, 16NiCr4, 637M17

Mechanical properties for conditions

  • +A:  max 217 HBW
  • +TH: 166 - 217 HBW
  • +FP: 156 - 207 HBW
  • +S: max 255 HBW
  • +A    Soft annealed
  • +TH   Treated to hardness range
  • +FP   Treated to ferrite-pearlite structure and hardness range
  • +S    Treated to improve shearability
  • Tensile strength Rm: ≥ 1030 MPa
  • Yield strength Rp: ≥ 830 MPa
  • Elongation A: min 11%
  • Hardness: +A max 229 HBW
  • Impact strength, KU2 min 56J

Heat Treatment of 1.5714, 16NiCr4, 637M17

  • Austenitizing: 30 - 35 min , 880℃
  • Carburizing     880 - 980℃
  • Core-hardening      850 - 890℃
  • Case-hardening      780 - 820℃
  • Tempering   1 h minimum 150 - 200℃

Equivalent grades of 1.5714, 16NiCr4, 637M17

16NiCr4, 1.5714, 16 NiCr 4, 5714, 19ChGN, 19KhGN, 19ХГН, 637H17, 637 H 17, 18ChGN1, 18KhGN1, 18ХГН1, ČSN 16 121, ČSN 16121, 15HGN, 16NiCrS4