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EN 1.7720 Steel vs. EN 1.3566 Steel

Both EN 1.7720 steel and EN 1.3566 steel are iron alloys. Their average alloy composition is basically identical. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.7720 steel and the bottom bar is EN 1.3566 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
150 to 220
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 590
490 to 1380

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
420
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 40
45
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
2.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.2
1.5
Embodied Energy, MJ/kg 30
20
Embodied Water, L/kg 51
52

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21
17 to 49
Strength to Weight: Bending, points 20
17 to 35
Thermal Diffusivity, mm2/s 11
12
Thermal Shock Resistance, points 17
14 to 40

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Carbon (C), % 0.1 to 0.15
0.12 to 0.18
Chromium (Cr), % 0.3 to 0.5
0.9 to 1.2
Copper (Cu), % 0 to 0.3
0 to 0.3
Iron (Fe), % 96.6 to 98.6
96.8 to 98.4
Manganese (Mn), % 0.4 to 0.7
0.6 to 0.9
Molybdenum (Mo), % 0.4 to 0.6
0.15 to 0.25
Nickel (Ni), % 0 to 0.4
0
Oxygen (O), % 0
0 to 0.0020
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 0.45
0 to 0.4
Sulfur (S), % 0 to 0.020
0 to 0.030
Vanadium (V), % 0.22 to 0.3
0