Nb HSLA Steels

Steel name: Nb HSLA Steels
Diagram No.: 2797
Type of diagram: TTP
Chemical composition in weight %:
0.067% C, 0.20% Si, 1.23% Mn, 0.040% Nb, 0.02% Al, 0.006% N (max)
0.065% C, 0.18% Si, 1.25% Mn, 0.045% Nb, 0.08% Al, 0.006% N (max)
Steel group: Alloy steels
Note: Precipitation diagram. Carbide TTP During Deformation and Recrystallization. Treatment: Austenitized for 30 min in an argon atmosphere in the Test chamber immediately prior to testing. These temperature were chosen to ensure the complete solution of the "carbonitrides" and yield approximately the same initial austenite grain size of 100 µm in all steels. The samples were the cooled to the Test temperature at 1oC/s, tested and quenched.
Reference: Not shown in this demo version.

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