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SAE-AISI O1 Steel vs. SAE-AISI H26 Steel

Both SAE-AISI O1 steel and SAE-AISI H26 steel are iron alloys. They have 78% of their average alloy composition in common. There are 21 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 O1 steel and the bottom bar is SAE-AISI H26 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 2060
720 to 2100

Thermal Properties

Latent Heat of Fusion, J/g 250
240
Melting Completion (Liquidus), °C 1460
1810
Melting Onset (Solidus), °C 1420
1760
Specific Heat Capacity, J/kg-K 470
410
Thermal Conductivity, W/m-K 43
22
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
45
Density, g/cm3 7.8
9.3
Embodied Carbon, kg CO2/kg material 1.9
8.1
Embodied Energy, MJ/kg 27
120
Embodied Water, L/kg 51
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
22 to 63
Strength to Weight: Bending, points 21 to 46
19 to 39
Thermal Diffusivity, mm2/s 12
5.6
Thermal Shock Resistance, points 21 to 68
22 to 63

Alloy Composition

Carbon (C), % 0.85 to 1.0
0.45 to 0.55
Chromium (Cr), % 0.4 to 0.6
3.8 to 4.5
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 95 to 97.4
73.3 to 77.5
Manganese (Mn), % 1.0 to 1.4
0.15 to 0.4
Nickel (Ni), % 0 to 0.3
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.5
0.15 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0.4 to 0.6
17.3 to 19
Vanadium (V), % 0 to 0.3
0.75 to 1.3

Comparable Variants