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ACI-ASTM CT15C Steel vs. SAE-AISI S6 Steel

Both ACI-ASTM CT15C steel and SAE-AISI S6 steel are iron alloys. They have 48% 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 S6 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 1920

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Melting Completion (Liquidus), °C 1410
1430
Melting Onset (Solidus), °C 1360
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 12
41
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 36
3.2
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 6.1
2.3
Embodied Energy, MJ/kg 88
33
Embodied Water, L/kg 190
56

Common Calculations

PREN (Pitting Resistance) 20
2.7
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
24 to 70
Strength to Weight: Bending, points 17
22 to 45
Thermal Diffusivity, mm2/s 3.2
11
Thermal Shock Resistance, points 12
22 to 64

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.4 to 0.5
Chromium (Cr), % 19 to 21
1.2 to 1.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 40.3 to 49.2
92.8 to 94.7
Manganese (Mn), % 0.15 to 1.5
1.2 to 1.5
Molybdenum (Mo), % 0
0.3 to 0.5
Nickel (Ni), % 31 to 34
0
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
2.0 to 2.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0.2 to 0.4