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ACI-ASTM CT15C Steel vs. SAE-AISI M48 Steel

Both ACI-ASTM CT15C steel and SAE-AISI M48 steel are iron alloys. They have 49% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (12, 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 M48 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 500
890 to 2390

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Melting Completion (Liquidus), °C 1410
1670
Melting Onset (Solidus), °C 1360
1620
Specific Heat Capacity, J/kg-K 470
420
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 36
48
Density, g/cm3 8.0
8.7
Embodied Carbon, kg CO2/kg material 6.1
13
Embodied Energy, MJ/kg 88
190
Embodied Water, L/kg 190
160

Common Calculations

PREN (Pitting Resistance) 20
37
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 17
28 to 76
Strength to Weight: Bending, points 17
23 to 45
Thermal Shock Resistance, points 12
26 to 71

Alloy Composition

Carbon (C), % 0.050 to 0.15
1.4 to 1.5
Chromium (Cr), % 19 to 21
3.5 to 4.0
Cobalt (Co), % 0
8.0 to 10
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 40.3 to 49.2
63.8 to 69.8
Manganese (Mn), % 0.15 to 1.5
0.15 to 0.4
Molybdenum (Mo), % 0
4.8 to 5.5
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 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
9.5 to 10.5
Vanadium (V), % 0
2.8 to 3.3