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ACI-ASTM CT15C Steel vs. SAE-AISI S1 Steel

Both ACI-ASTM CT15C steel and SAE-AISI S1 steel are iron alloys. They have 47% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 S1 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
73
Tensile Strength: Ultimate (UTS), MPa 500
690 to 1840

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Melting Completion (Liquidus), °C 1410
1500
Melting Onset (Solidus), °C 1360
1450
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 12
41
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 36
8.0
Density, g/cm3 8.0
8.0
Embodied Carbon, kg CO2/kg material 6.1
2.6
Embodied Energy, MJ/kg 88
37
Embodied Water, L/kg 190
56

Common Calculations

PREN (Pitting Resistance) 20
5.9
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
24 to 64
Strength to Weight: Bending, points 17
22 to 42
Thermal Diffusivity, mm2/s 3.2
11
Thermal Shock Resistance, points 12
21 to 56

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.4 to 0.55
Chromium (Cr), % 19 to 21
1.0 to 1.8
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 40.3 to 49.2
91.6 to 96.7
Manganese (Mn), % 0.15 to 1.5
0.1 to 0.4
Molybdenum (Mo), % 0
0 to 0.5
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
0.15 to 1.2
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
1.5 to 3.0
Vanadium (V), % 0
0.15 to 0.3