56Si7 Steel

Steel name: 56Si7
Table No.: 1712
DIN designation: 55Si7
Mat.No. (Wr.Nr.) designation: 1.5026
AISI/SAE designation: 9555
EN designation: 56Si7
UNI designation: 55Si7
AFNOR designation: 55S7
BS designation: 25158
GOST designation: 55S2
Chemical composition in weight %: 0.52-0.60% C, 1.60-1.20% Si, 0.60-0.90% Mn, max. 0.025% P, max. 0.025% S
Steel group: Alloyed steel
Applications: No data
Comment: Ac1=770 C, Ac3=8210 C, Ms=290 C, Mf=70 C.
Reference: Not shown in this demo version.

Heat Treatment
Quenching: 840-870 C/oil, polymer
Tempering: 400-480 C/air
Hardenability test
Quenching: 850 C/water

Hardenability Table

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Other Steel Data links:
Carbides in Steel
CCT & TTT Diagrams of Steels
Etchants Database
Hardenability Calculating Service
Macro Defects in Steel
Non-Metallic Inclusions in Steel
Tempering Diagrams of Steels

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