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EN 1.6553 Steel vs. SAE-AISI 8720 Steel

Both EN 1.6553 steel and SAE-AISI 8720 steel are iron alloys. Their average alloy composition is basically identical. There are 30 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 1.6553 steel and the bottom bar is SAE-AISI 8720 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 240
150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19 to 21
25
Fatigue Strength, MPa 330 to 460
240
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 710 to 800
500
Tensile Strength: Yield (Proof), MPa 470 to 670
330

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
410
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 39
39
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.7
2.6
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.5
Embodied Energy, MJ/kg 21
20
Embodied Water, L/kg 51
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 150
110
Resilience: Unit (Modulus of Resilience), kJ/m3 600 to 1190
290
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 25 to 28
18
Strength to Weight: Bending, points 23 to 24
18
Thermal Diffusivity, mm2/s 10
10
Thermal Shock Resistance, points 21 to 23
17

Alloy Composition

Carbon (C), % 0.23 to 0.28
0.18 to 0.23
Chromium (Cr), % 0.4 to 0.8
0.4 to 0.6
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 95.6 to 98.2
96.8 to 98
Manganese (Mn), % 0.6 to 1.0
0.7 to 0.9
Molybdenum (Mo), % 0.15 to 0.3
0.2 to 0.3
Nickel (Ni), % 0.4 to 0.8
0.4 to 0.7
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.8
0.15 to 0.35
Sulfur (S), % 0 to 0.025
0 to 0.040
Vanadium (V), % 0 to 0.030
0