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

Both SAE-AISI M48 steel and ACI-ASTM CT15C 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 SAE-AISI M48 steel and the bottom bar is ACI-ASTM CT15C steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

Carbon (C), % 1.4 to 1.5
0.050 to 0.15
Chromium (Cr), % 3.5 to 4.0
19 to 21
Cobalt (Co), % 8.0 to 10
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 63.8 to 69.8
40.3 to 49.2
Manganese (Mn), % 0.15 to 0.4
0.15 to 1.5
Molybdenum (Mo), % 4.8 to 5.5
0
Nickel (Ni), % 0 to 0.3
31 to 34
Niobium (Nb), % 0
0.5 to 1.5
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.15 to 0.4
0.15 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 9.5 to 10.5
0
Vanadium (V), % 2.8 to 3.3
0