1.2379 Steel

1.2379 Steel

Steel name: 1.2379
Diagram No.: 2209
Mat.No. (Wr.Nr.) designation: 1.2379
DIN designation: X153CrMoV12
AISI/SAE designation: D2
Chemical composition in weight %: 1.55% C, 0.20% Si, 0.30% Mn, 0.030% P, 0.005% S, 12.00% Cr, 0.80% Mo, 1.00% V
Steel group: Cold work tool steels
Properties: Very high abrasive wear resistance, low distortion, high quality steel for punching dies with excellent dynamic load resistance due to special heat treatment, nitridable.
Applications: Cutting, stamping and precise punching tools, extrusion tools subject to cracking and complex cutting, shear blades; cutters for austenitic grade steel after nitriding. High stress plastic moulds, mould inserts for high abrasive wear applications.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: Temperature: 980-1080°C. Duration: 90 sec per 1 mm wall thickness.
Tempering: Temperature: see curve. Duration: 1 h per 25 mm wall thickness. Cooling: air
Diagram note: Average values for samples dia. 25 x 50 mm long, oil hardened. N/mm2 and HB converted from HRC.

Tempering Diagram

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Carbides in Steel
CCT and TTT Diagrams of Steels
CCT and TTT Diagram Calculating Service
Hardenability Diagrams of Steels
Hardenability Calculating Service
Macro Defects in Steel
Metal Etchants
Non-Metallic Inclusions in Steel
Semiconductor Etchants

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