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SAE-AISI O2 Steel vs. EN 1.3558 Steel

Both SAE-AISI O2 steel and EN 1.3558 steel are iron alloys. They have 77% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI O2 steel and the bottom bar is EN 1.3558 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
80
Tensile Strength: Ultimate (UTS), MPa 640 to 2050
770

Thermal Properties

Latent Heat of Fusion, J/g 250
240
Melting Completion (Liquidus), °C 1450
1810
Melting Onset (Solidus), °C 1410
1760
Specific Heat Capacity, J/kg-K 470
410
Thermal Conductivity, W/m-K 43
20
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
13
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
12

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
45
Density, g/cm3 7.8
9.3
Embodied Carbon, kg CO2/kg material 1.8
8.4
Embodied Energy, MJ/kg 26
130
Embodied Water, L/kg 50
90

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 24
21
Strength to Weight: Axial, points 23 to 73
23
Strength to Weight: Bending, points 21 to 46
20
Thermal Diffusivity, mm2/s 12
5.3
Thermal Shock Resistance, points 22 to 70
22

Alloy Composition

Carbon (C), % 0.85 to 1.0
0.7 to 0.8
Chromium (Cr), % 0 to 0.5
3.9 to 4.3
Copper (Cu), % 0 to 0.25
0 to 0.3
Iron (Fe), % 95 to 97.8
73.7 to 77.6
Manganese (Mn), % 1.4 to 1.8
0 to 0.4
Molybdenum (Mo), % 0 to 0.3
0 to 0.6
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 0
17.5 to 19
Vanadium (V), % 0 to 0.3
1.0 to 1.3