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SAE-AISI O1 Steel vs. ASTM Grade HE Steel

Both SAE-AISI O1 steel and ASTM grade HE steel are iron alloys. They have 62% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI O1 steel and the bottom bar is ASTM grade HE steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 72
79
Tensile Strength: Ultimate (UTS), MPa 640 to 2060
670

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1420
1360
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 43
14
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
19
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.9
3.5
Embodied Energy, MJ/kg 27
50
Embodied Water, L/kg 51
190

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23 to 73
24
Strength to Weight: Bending, points 21 to 46
22
Thermal Diffusivity, mm2/s 12
3.6
Thermal Shock Resistance, points 21 to 68
14

Alloy Composition

Carbon (C), % 0.85 to 1.0
0.2 to 0.5
Chromium (Cr), % 0.4 to 0.6
26 to 30
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 95 to 97.4
53.9 to 65.8
Manganese (Mn), % 1.0 to 1.4
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.3
8.0 to 11
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040
Tungsten (W), % 0.4 to 0.6
0
Vanadium (V), % 0 to 0.3
0