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EN 1.1181 Steel vs. EN 1.1147 Steel

Both EN 1.1181 steel and EN 1.1147 steel are iron alloys. Their average alloy composition is basically identical. 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 1.1147 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 180
110 to 140
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19 to 20
12 to 17
Fatigue Strength, MPa 190 to 260
180 to 250
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 350 to 390
280
Tensile Strength: Ultimate (UTS), MPa 560 to 620
390 to 470
Tensile Strength: Yield (Proof), MPa 280 to 380
280 to 370

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
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
51
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 19
18
Embodied Water, L/kg 47
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90 to 110
40 to 73
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 380
210 to 370
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20 to 22
14 to 17
Strength to Weight: Bending, points 19 to 21
15 to 17
Thermal Diffusivity, mm2/s 11
14
Thermal Shock Resistance, points 19 to 21
12 to 15

Alloy Composition

Carbon (C), % 0.32 to 0.39
0.15 to 0.19
Chromium (Cr), % 0 to 0.4
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 97.4 to 99.18
98.3 to 99.25
Manganese (Mn), % 0.5 to 0.8
0.6 to 0.9
Molybdenum (Mo), % 0 to 0.1
0
Nickel (Ni), % 0 to 0.4
0
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.3
Sulfur (S), % 0 to 0.035
0 to 0.025