56Si7 Steel

Steel name: 56Si7
Diagram No.: 1542
DIN designation: 56Si7
Chemical composition in weight %: 0.52-0.60% C, 1.60-2.00% Si, 0.60-0.90% Mn, max. 0.025% P, max. 0.025% S, 0.010-0.040% Al
Steel group: Spring steels
Applications: Grade 56Si7 is a silicon spring steel suitable for quenched and hardened springs and different type of knives.
Comment: Ms=266 C, Ac1=767 C, Ac3=820 C. Similar designations: 1.5026, 55S7, 251A58, 55Si2Mn, AISI9255, 55Si8.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: 840-870oC/in oil

Hardenability Diagram

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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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