17NiCrMo6-4 Steel - Hardenability Diagram

17NiCrMo6-4 Steel

Steel name: 17NiCrMo6-4
Table No.: 1745
DIN designation: 17NiCrMo6-4
Mat.No. (Wr.Nr.) designation: 1.6566
EN designation: 17NiCrMo6-4
GOST designation: 17HGN1M
Chemical composition in weight %: 0.14-0.20% C, max. 0.40% Si, 0.60-0.90% Mn, max. 0.025% P, max. 0.035% S, 0.80-1.10% Cr, 0.15-0.25% Mo, 1.20-1.50% Ni
Steel group: Case hardening steels
Applications: No data
Comment: Ac1=730 C, Ac3=815 C, Ms (core)=360 C, Ms(carburizing surface)=180 C.
Reference: Not shown in this demo version.

Heat Treatment
Core hardening: 830-870 C/oil, polymer
Hardening carburized surface: 780-820 C
Carburizing: 880-980 C
Hardenability test
Quenching: 880 C/water

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Other Steel Data links:
Carbides in Steel
CCT and TTT Diagrams of Steels
CCT and TTT Diagram Calculating Service
Hardenability Calculating Service
Macro Defects in Steel
Metal Etchants
Non-Metallic Inclusions in Steel
Semiconductor Etchants
Transformation Diagrams of Non-Ferrous Alloys
Tempering Diagrams of Steels

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