D2 1.2379

Grade Introduction:

DIN 1.2379 Steel (X153CrMoV12 Material) is a high carbon chromium molybdenum vanadium cold worked tool steel with high wear resistance, good dimensional stability, toughness, and hardenability. Due to the secondary hardening properties, it is easy to carry out supplementary nitriding and surface coating. High chromium increases wear resistance and toughness and contribute to corrosion resistance; Vanadium gives the steel a finer grain structure and prevents excessive grain growth and improves the hardenability of steel; Molybdenum increases heat resistance and hardenability, improve corrosion and wear resistance.

DIN 2379 steel is Cold Work Steel with High Carbon High Chromium contents. The Quality with high wear-resistant and toughness properties due to Vanadium addition of 0.90%. Normally it supply condition is Annealed and will offer hardness to reach 57-59 HRC. It can be machinable in the annealed condition. DIN 2379 is superior steel to D3 due to its high alloy properties.

Grade Application:

DIN 2379 tool steel applicable for cold stamping or forming dies, cold forming rolls, Chipper Knives, Punches, slitters, shear blades, tools, tyre shredders, trimming, cutting Threading Dies, stamping tools Etc.

Equivalent grades:

Germany US China Japan
Company Steel Name Standard Grade (UNS) Standard Grade Standard Grade
Bohler Bohler K110 AISI; ASTM A681 D2(UNS T30402) GB/T 1299 Cr12Mo1V1 JISG4404 SKD10

Chemical composition:

The following table shows the chemical composition of DIN 1.2379 steel:

Element C Si Mn P S Cr Mo V
Content (%) 1.45 – 1.60 0.1 – 0.6 0.2 – 0.6 - - - 11.0 – 13.0 0.70 – 1.00 0.70 – 1.00


Austenitizing temperature 1020 ± 10 °C


Max. 250