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S44626 Stainless Steel vs. SAE-AISI O2 Steel

Both S44626 stainless steel and SAE-AISI O2 steel are iron alloys. They have 72% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is S44626 stainless steel and the bottom bar is SAE-AISI O2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
72
Tensile Strength: Ultimate (UTS), MPa 540
640 to 2050

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 17
43
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 14
2.4
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.9
1.8
Embodied Energy, MJ/kg 42
26
Embodied Water, L/kg 160
50

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 19
23 to 73
Strength to Weight: Bending, points 19
21 to 46
Thermal Diffusivity, mm2/s 4.6
12
Thermal Shock Resistance, points 18
22 to 70

Alloy Composition

Carbon (C), % 0 to 0.060
0.85 to 1.0
Chromium (Cr), % 25 to 27
0 to 0.5
Copper (Cu), % 0 to 0.2
0 to 0.25
Iron (Fe), % 68.1 to 74.1
95 to 97.8
Manganese (Mn), % 0 to 0.75
1.4 to 1.8
Molybdenum (Mo), % 0.75 to 1.5
0 to 0.3
Nickel (Ni), % 0 to 0.5
0 to 0.3
Nitrogen (N), % 0 to 0.040
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.75
0 to 0.5
Sulfur (S), % 0 to 0.020
0 to 0.030
Titanium (Ti), % 0.2 to 1.0
0
Vanadium (V), % 0
0 to 0.3