Steel name: 4340
Diagram No.: 1465
Type of diagram: TTT
AISI: 4340
Chemical composition in weight %: 0.42% C, 0.78% Mn, 1.79% Ni, 0.80% Cr,
0.33% Mo.
Note: Structural steel. Austenitizing temperature: 843
oC (1550
oF).
Grain size: 7-8.
Source: Atlas of Isothermal Transformation Diagrams, United States Steel
Corporation, 1961, Fourth Edition, Pittsburgh, PA, USA.
Price: 25.00 US $
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