1.2379 cold work tool steel

E Steel Sdn Bhd are Malaysia steel supplier/stockist providing raw materials to the wide arrays of engineering industries/sectors.

We supply full range of Plastic mould Steel plate, Plastic Mould steel round bar , Carbon steel plate, Carbon steel round Bar,  Hot work steel , Special Steel ,Tool Steel ,Corrosion resistant Steel.




D2 Tool Steel (X153CrMoV12), 1.2379, XW41, SKD11, D2, XW42
Chrome steel 12%, very high resistance against abrasive and adhesive wear due to a high volume of hard carbides in the steel matrix, good toughness, very good dimensional stability, high compressive strength, very good base material for PVD/CVD coating as well as nitriding due to its secondary hardening properties. Similar to SKD11 / 2379

Applications: Cutting, punching, stamping tools, shear blades, thread rolling dies, cold extrusion dies, drawing and bending tools, flanging and straightening rolls, fine cutting tools, deep drawing tools, plastic moulds for abrasive polymers.


1.2379 steel Chemical Composition %
Carbon 1.55
Chromium 12.00
Molybdenum 0.80
Vanadium 0.90


1.2379 tool Steel equivalent

Country USA German Japan
Standard ASTM A681 DIN EN ISO 4957 JIS G4404
Grades D2 1.2379/X153CrMo12 SKD11


2379 Steel Mechanical Properties

Mechanical Properties Metric Imperial
Hardness, Knoop (converted from Rockwell C hardness) 769 769
Hardness, Rockwell C 62 62
Hardness, Vickers 748 748
Izod impact unnotched 77.0 J 56.8 ft-lb
Poisson’s ratio 0.27-0.30 0.27-0.30
Elastic modulus 190-210 GPa 27557-30457 ksi


2379 Tool Steel Heat Treatment
Soft Annealing
Temperature Cooling Hardness
820 – 850oC furnace max 255 HB
Stress Relief Annealing
Temperature Cooling
600 – 650oC furnace
Temperature Cooling Tempering
1020 – 1030oC oil, pressure (N2)
air or hot bath
500 – 550oC
see tempering diagram
usually < 300°C
1040 – 1080oC oil, pressure (N2)
air or hot bath
500 – 550oC
see tempering diagram
usually 500°C
What is 2379 steel?
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 an Annealed and will offer hardness to reach 57-59 HRC. It can be machinable in the annealed condition.
What is D2 steel used for?
D2 is commonly used in long production, cold work applications, high wear applications and it is very popular as a knife blade steelD2 tool steel is also available in precision milled Super Square, which can be 2, 4, or 6 side precision milled.