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EN 1.1181 Steel vs. EN 1.4931 Steel

Both EN 1.1181 steel and EN 1.4931 steel are iron alloys. They have 87% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.1181 steel and the bottom bar is EN 1.4931 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 180
240
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 19 to 20
17
Fatigue Strength, MPa 190 to 260
410
Impact Strength: V-Notched Charpy, J 23 to 38
30
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Tensile Strength: Ultimate (UTS), MPa 560 to 620
810
Tensile Strength: Yield (Proof), MPa 280 to 380
620

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 400
600
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 42
24
Thermal Expansion, µm/m-K 11
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
9.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
11

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
8.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
2.9
Embodied Energy, MJ/kg 19
42
Embodied Water, L/kg 47
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90 to 110
130
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 380
970
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20 to 22
29
Strength to Weight: Bending, points 19 to 21
25
Thermal Diffusivity, mm2/s 11
6.5
Thermal Shock Resistance, points 19 to 21
22

Alloy Composition

Carbon (C), % 0.32 to 0.39
0.2 to 0.26
Chromium (Cr), % 0 to 0.4
11.3 to 12.2
Iron (Fe), % 97.4 to 99.18
83.2 to 86.8
Manganese (Mn), % 0.5 to 0.8
0.5 to 0.8
Molybdenum (Mo), % 0 to 0.1
1.0 to 1.2
Nickel (Ni), % 0 to 0.4
0 to 1.0
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0 to 0.4
0 to 0.4
Sulfur (S), % 0 to 0.035
0 to 0.020
Tungsten (W), % 0
0 to 0.5
Vanadium (V), % 0
0.25 to 0.35