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SAE-AISI O1 Steel vs. EN 1.4587 Stainless Steel

Both SAE-AISI O1 steel and EN 1.4587 stainless steel are iron alloys. They have a modest 39% of their average alloy composition in common, which, by itself, doesn't mean much. There are 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI O1 steel and the bottom bar is EN 1.4587 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
80
Tensile Strength: Ultimate (UTS), MPa 640 to 2060
540

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1370
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 43
17
Thermal Expansion, µm/m-K 12
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
36
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 1.9
6.3
Embodied Energy, MJ/kg 27
87
Embodied Water, L/kg 51
230

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 73
18
Strength to Weight: Bending, points 21 to 46
18
Thermal Diffusivity, mm2/s 12
4.5
Thermal Shock Resistance, points 21 to 68
13

Alloy Composition

Carbon (C), % 0.85 to 1.0
0 to 0.030
Chromium (Cr), % 0.4 to 0.6
24 to 26
Copper (Cu), % 0 to 0.25
2.0 to 3.0
Iron (Fe), % 95 to 97.4
32.7 to 41.9
Manganese (Mn), % 1.0 to 1.4
0 to 2.0
Molybdenum (Mo), % 0
4.0 to 5.0
Nickel (Ni), % 0 to 0.3
28 to 30
Nitrogen (N), % 0
0.15 to 0.25
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 0.4 to 0.6
0
Vanadium (V), % 0 to 0.3
0