DIN EN 1.2379 Steel X153CrMoV12 Material Equivalent, Datasheet, Properties

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DIN EN 1.2379 Steel (X153CrMoV12 Material)

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 contributes to corrosion resistance; Vanadium gives steel a finer grain structure and prevents excessive grain growth and improves hardenability of steel; Molybdenum increases heat resistance and hardenability, improve corrosion and wear resistance.

Material 1.2379 Datasheet

The following content gives the 1.2379 datasheet including chemical composition, mechanical properties, and physical properties.

Chemical Composition

Datasheet -1, Chemical composition (melt analysis) for alloyed cold work tool steels.

Chemical Composition %
Country (Region) Standard Steel Grade (Steel Number) C Si Mn Cr Mo V
European Union EN ISO 4957 X153CrMoV12 (1.2379) 1.45-1.60 0.10-0.60 0.20-0.60 11.0-13.0 0.70-1.00 0.70-1.00

DIN 1.2379 Properties

The datasheet below summarizes 1.2379 properties including physical properties and mechanical properties.

Physical Properties

Datasheet -2, X153CrMoV12 Physical Properties

Density, g/cm3 7,7
Specific heat capacity, J/(Kg·K) 460 at 20 ℃
Electrical resistivity, μΩ·m 0,65 (20 ℃)
Elastic modulus, GPa (kN/mm2) 210
Thermal conductivity, (W/m·K) 16,7 (20 ℃)
20,5 (350 ℃)
24,2 (700 ℃)
Coefficient of thermal expansion, (10-6/K) 10,5 (20-100 ℃)
11,5 (20-200 ℃)
11,9 (20-300 ℃)
13,0 (20-400 ℃)

Mechanical Properties

Datasheet -3, The table below shows 1.2379 mechanical properties including tensile strength and yield strength.

Mechanical properties
Country (Region) Standard Steel Grade (Steel Number) Tensile strength, MPa, ≥ Yield strength, MPa, ≥
European Union EN ISO 4957 X153CrMoV12 (1.2379) 860 420

1 MPa = 1 N/mm2

Heat Treatment and Hardness

Soft annealing: 800 °C – 850 °C (1470 °F – 1560 °F), furnace cooling, maximum Brinell hardness 255 HB.

DIN 1.2379 Hardening: austenitizing temperature 1020 ± 10 °C; Quenching agent: air; Tempering temperature: 180 ± 10 °C; Minimum Rockwell Hardness: 61 HRC.

Datasheet -4, hardness tempering temperature

Hardness tempering temperature
Tempering temperature, °C Hardness, HRC
100 64
200 62
300 60
400 59
500 60
550 58
600 50

Isothermal Transformation Diagram

The image below shows 1.2379 steel Isothermal Transformation Diagram (also known as Time Temperature Transformation, TTT) for reference.

X153CrMoV12 1.2379 Steel TTT Diagram datasheet

1.2379 Material Usage

Use of 1.2379 tool steel including: thread rolling and dies, fracture sensitive cuts, sinking and printing cups, friers, reamers, sockets, shear knives, space needles, machine knives, cutting tools, etc.

DIN 1.2379 Steel Equivalent Grades

DIN EN 1.2379 Material Datasheet -5, European Standard (including German DIN, British BSI, French NF, and other EU member states standard) X153CrMoV12 steel, 1.2379 steel equivalent to Chinese GB standard, US ASTM AISI and SAE, Japanese JIS standard and ISO standard, etc.

Notes: Material X153CrMoV12 old designation is X155CrVMo12-1 in DIN 17350: 1980.

EN X153CrMoV12, 1.2379 material equivalent
European Union Germany US ISO China Japan
Standard Steel Name (Material Number) Company Steel Name Standard Grade (UNS) Standard Grade Standard Grade Standard Grade
EN ISO 4957 X153CrMoV12 (1.2379) Bohler Bohler K110 AISI; ASTM A681 D2 (UNS T30402) ISO 4957 X153CrMoV12 GB/T 1299 Cr12Mo1V1 JIS G4404 SKD10

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