18CrNiMo7-6 Steel

18CrNiMo7-6 Steel

Steel name: 18CrNiMo7-6
Table No.: 1898
DIN designation: 17CrNiMo6
Mat.No. (Wr.Nr.) designation: 1.6587
AISI/SAE designation: ~4820
EN designation: 18CrNiMo7-6
UNI designation: 18CrNiMo7-6
AFNOR designation: 18CND6
BS designation: ~822M17
Chemical composition in weight %: 0.15-0.21% C, max. 0.40% Si, 0.50-0.90% Mn, max. 0.025% P, max. 0.035% S, 1.50-1.80% Cr, 0.25-0.35% Mo, 1.40-1.70% Ni
Steel group: Alloy steels
Applications: No data
Note: Ac1-745 C, Ac3=825, Ms (core)=400 C, Ms (carburized surface)=170 C.
Reference: Not shown in this demo version.

Heat Treatment
Core hardening: 830-870 C/oil or polymer
Carburizing: 900-950 C
Hardening carburizing surface: 780-820 C/oil or polymer
Tempering: 15-200 C/air

Table Tempering Temperature - Hardness - Mechanical Properties

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

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