20CrMoV13-5 Steel

Steel name: 20CrMoV13-5
Diagram No.: 5119
Type of diagram: TTP
DIN designation: 20CrMoV13-5
Mat. No. (Wr. Nr.) designation: 1.7779
Chemical composition in weight %: 0.17-0.23% C, 0.15-0.35% Si, 0.30-0.50% Mn, max. 0.035% P, max. 0.035% S, 3.00-3.30% Cr, 0.50-0.60% Mo, 0.45-0.55% V
Steel group: Alloy special steels
Note: Fig. shows the time-temperature-precipitation diagram of the steel 20CrMoV13-5. The starting heat treatment is air cooling from the austenitizing temperature, i.e. the microstructure is predominately bainitic. On aging, MX and M7C3 are precipitated, whilst cementite re-dissolves. However, these reactions take place more rapidly than in the case of the steel 17CrMoV10, on account of the higher alloy content. The microstructures and carbide forms are very similar, so that the reader is referred to this steel for typical micrographs.
Reference: Not shown in this demo version.

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Time-temperature-precipitation diagram of the steel 20CrMoV13-5. Pretreatment: 1025 °C 10 min/air. Click the image to enlarge the diagram.

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