30MnB5 Steel

Steel name: 30MnB5
Diagram No.: 1532
DIN designation: 30MnB5
Chemical composition in weight %: 0.27-0.32% C, 0.15-0.35% Si, 1.20-1.40% Mn, max. 0.035% P, max. 0.035% S, 0.10-0.25% Cr, 0.025-0.050% Ti, 0.0010-0.0050% B
Steel group: Alloy steels, boron steels
Applications: SB33M13B may serve as wear parts in for example graders and snow ploughs but also suitable for agriculture machinery.
Comment: Ms=360 C, Ac1=717 C, Ac3=772 C. Grade SB33M13B is a boron steel for general purposes without any specified mechanical properties. Its closest equivalent is found in the EN10083-3:2006 grade 30MnB5. The difference is the carbon and chromium content.
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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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