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Grade 250 Maraging Steel vs. ACI-ASTM CB30 Steel

Both grade 250 maraging steel and ACI-ASTM CB30 steel are iron alloys. They have 70% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is grade 250 maraging steel and the bottom bar is ACI-ASTM CB30 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 75
77
Tensile Strength: Ultimate (UTS), MPa 970 to 1800
500
Tensile Strength: Yield (Proof), MPa 660 to 1740
230

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1480
1430
Melting Onset (Solidus), °C 1430
1380
Specific Heat Capacity, J/kg-K 450
480
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 32
10
Density, g/cm3 8.2
7.7
Embodied Carbon, kg CO2/kg material 4.9
2.3
Embodied Energy, MJ/kg 65
33
Embodied Water, L/kg 140
130

Common Calculations

PREN (Pitting Resistance) 16
20
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 33 to 61
18
Strength to Weight: Bending, points 26 to 40
18
Thermal Shock Resistance, points 29 to 54
17

Alloy Composition

Aluminum (Al), % 0.050 to 0.15
0
Boron (B), % 0 to 0.0030
0
Calcium (Ca), % 0 to 0.050
0
Carbon (C), % 0 to 0.030
0 to 0.3
Chromium (Cr), % 0
18 to 21
Cobalt (Co), % 7.0 to 8.5
0
Copper (Cu), % 0
0 to 1.2
Iron (Fe), % 66.3 to 71.1
72.9 to 82
Manganese (Mn), % 0 to 0.1
0 to 1.0
Molybdenum (Mo), % 4.6 to 5.2
0
Nickel (Ni), % 17 to 19
0 to 2.0
Phosphorus (P), % 0 to 0.010
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 1.5
Sulfur (S), % 0 to 0.010
0 to 0.040
Titanium (Ti), % 0.3 to 0.5
0
Zirconium (Zr), % 0 to 0.020
0