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AWS E309Mo vs. SAE-AISI O1 Steel

Both AWS E309Mo and SAE-AISI O1 steel are iron alloys. They have 61% of their average alloy composition in common. There are 23 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 AWS E309Mo and the bottom bar is SAE-AISI O1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
72
Tensile Strength: Ultimate (UTS), MPa 620
640 to 2060

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
43
Thermal Expansion, µm/m-K 14
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 22
3.4
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.2
1.9
Embodied Energy, MJ/kg 59
27
Embodied Water, L/kg 180
51

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
23 to 73
Strength to Weight: Bending, points 20
21 to 46
Thermal Diffusivity, mm2/s 3.9
12
Thermal Shock Resistance, points 15
21 to 68

Alloy Composition

Carbon (C), % 0 to 0.12
0.85 to 1.0
Chromium (Cr), % 22 to 25
0.4 to 0.6
Copper (Cu), % 0 to 0.75
0 to 0.25
Iron (Fe), % 53.6 to 63.5
95 to 97.4
Manganese (Mn), % 0.5 to 2.5
1.0 to 1.4
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 12 to 14
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
0.4 to 0.6
Vanadium (V), % 0
0 to 0.3