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ACI-ASTM CT15C Steel vs. Grade 300 Maraging Steel

Both ACI-ASTM CT15C steel and grade 300 maraging steel are iron alloys. They have 63% of their average alloy composition in common. There are 23 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 grade 300 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
6.5 to 18
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 76
75
Tensile Strength: Ultimate (UTS), MPa 500
1030 to 2030
Tensile Strength: Yield (Proof), MPa 190
760 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Melting Completion (Liquidus), °C 1410
1480
Melting Onset (Solidus), °C 1360
1430
Specific Heat Capacity, J/kg-K 470
450
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 36
34
Density, g/cm3 8.0
8.2
Embodied Carbon, kg CO2/kg material 6.1
5.1
Embodied Energy, MJ/kg 88
68
Embodied Water, L/kg 190
150

Common Calculations

PREN (Pitting Resistance) 20
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
130 to 170
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 17
35 to 68
Strength to Weight: Bending, points 17
28 to 43
Thermal Shock Resistance, points 12
31 to 62

Alloy Composition

Aluminum (Al), % 0
0.050 to 0.15
Boron (B), % 0
0 to 0.0030
Calcium (Ca), % 0
0 to 0.050
Carbon (C), % 0.050 to 0.15
0 to 0.030
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 0
8.5 to 9.5
Iron (Fe), % 40.3 to 49.2
65 to 68.4
Manganese (Mn), % 0.15 to 1.5
0 to 0.1
Molybdenum (Mo), % 0
4.6 to 5.2
Nickel (Ni), % 31 to 34
18 to 19
Niobium (Nb), % 0.5 to 1.5
0
Phosphorus (P), % 0 to 0.030
0 to 0.010
Silicon (Si), % 0.15 to 1.5
0 to 0.1
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0.5 to 0.8
Zirconium (Zr), % 0
0 to 0.020