DIN 1.2343 Steel (X37CrMoV5-1) Equivalent & Properties

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DIN 1.2343 Steel (Material X37CrMoV5-1)

DIN 1.2343 steel is a hot work tool steel, the US equivalent material is H11 steel, which has excellent machinability and polishability, good high toughness and plasticity, high wear resistance at high and low temperatures and overall hardening performance.

The application of steel 1.2343 ESU (X37CrMoV5-1) is die casting molds for light metal processing, cylinders and pistons on cold chamber machines, metal extrusion tools, etc.

1.2343 Steel Properties

The tables below show 1.2343 steel properties such as chemical composition, physical and mechanical properties, etc.

Chemical Composition

Based on cast analysis

Chemical Composition, %
Standard Steel Number (Name) C Si Mn P, ≤ S, ≤ Cr Mo V
EN ISO 4957 1.2343 (X37CrMoV5-1) 0,33-0,41 0,90-1,20 0,25-0,50 0,03 0,02 4,8-5,5 1,10-1,50 0,30-0,50
DIN 17350 1.2343 (X38CrMoV5-1) 0,36-0,42 0,80-1,20 0,30-0,50 0,03 0,03 4,8-5,5 1,10-1,40 0,25-0,50

Physical Properties

Physical Properties
Density, g/cm3 7,85
Electrical resistivity, μΩ·m 0,52 (20 °C)
Specific heat capacity, J/(kg·K) 460 (20 °C)
Thermal conductivity, (W/m·K) 15,0 (20 °C)
Thermal conductivity, (W/m·K), annealed 29,8 (20 °C)
30,0 (350 °C)
33,4 (700 °C)
Thermal conductivity, (W/m·K), hardened and tempered 26,8 (20 °C)
27,3 (350 °C)
30,3 (700 °C)
Modulus of elasticity, GPa 210
Mean coefficient of thermal expansion, (10-6/K) 11,8 (20-100 °C)
12,4 (20-200 °C)
12,6 (20-300 °C)
12,7 (20-400 °C)
12,8 (20-500 °C)
12,9 (20-600 °C)
12,9 (20-700 °C)

Mechanical Properties

DIN 1.2343 tensile strength: > 1400 MPa (<150 °C).

Hardness at different tempering temperatures.

Tempering temperature (°C) Hardness (HRC)
50 53,7
100 53
200 52
300 52,5
400 54,5
450 56
500 56
550 52
600 46
650 39
700 31

Heat Treatment

Critical temperatures (°C): 830 (Ac1b), 900 (Ac1e), 340 (Ms)

Full Annealing: 870 °C-900 °C (1600 °F – 1650 °F); Hardness: ≤229 HBW (annealed)

Material 1.2343 hardening: Austenitizing temperature 1020±10 °C; Quenching Agent: Oil; The corresponding tempering temperature and HRC hardness can be found above.

DIN EN 1.2343 Steel Equivalent Grades

The equivalent material of 1.2343 steel (1.2343 ESR) is listed in the following table, e.g. ASTM standard, ISO standard, Chinese GB standard, Japanese JIS standard.

DIN 1.2343 Steel Equivalent Grades
European Union US ISO China Japan
Standard Steel Name (Material Number) Standard Grade (UNS) Standard Steel Name Standard Grade Standard Grade
EN ISO 4957 X37CrMoV5-1 (1.2343) ASTM A681 H11 ISO 4957 X37CrMoV5-1 GB/T 1299 4Cr5MoVSi JIS G4404 SKD6

Related materials: En24, En8 (BS970 080M40), DC01 (1.0330), Werkstoff 1.2343

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