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ACI-ASTM CT15C Steel vs. SAE-AISI S2 Steel

Both ACI-ASTM CT15C steel and SAE-AISI S2 steel are iron alloys. They have 46% 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 ACI-ASTM CT15C steel and the bottom bar is SAE-AISI S2 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 76
72
Tensile Strength: Ultimate (UTS), MPa 500
670 to 1940

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Melting Completion (Liquidus), °C 1410
1450
Melting Onset (Solidus), °C 1360
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 12
44
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 36
2.6
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 6.1
2.1
Embodied Energy, MJ/kg 88
30
Embodied Water, L/kg 190
49

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
24 to 69
Strength to Weight: Bending, points 17
22 to 44
Thermal Diffusivity, mm2/s 3.2
12
Thermal Shock Resistance, points 12
23 to 68

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.4 to 0.55
Chromium (Cr), % 19 to 21
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 40.3 to 49.2
96 to 98.1
Manganese (Mn), % 0.15 to 1.5
0.3 to 0.5
Molybdenum (Mo), % 0
0.3 to 0.6
Nickel (Ni), % 31 to 34
0 to 0.3
Niobium (Nb), % 0.5 to 1.5
0
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.15 to 1.5
0.9 to 1.2
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0 to 0.5