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Grade 250 Maraging Steel vs. ACI-ASTM CE8MN Steel

Both grade 250 maraging steel and ACI-ASTM CE8MN steel are iron alloys. They have 75% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (11, 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 CE8MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 7.3 to 17
29
Poisson's Ratio 0.3
0.27
Shear Modulus, GPa 75
80
Tensile Strength: Ultimate (UTS), MPa 970 to 1800
750
Tensile Strength: Yield (Proof), MPa 660 to 1740
500

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1480
1440
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 450
480
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 32
21
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 4.9
4.2
Embodied Energy, MJ/kg 65
58
Embodied Water, L/kg 140
180

Common Calculations

PREN (Pitting Resistance) 16
40
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 150
190
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 33 to 61
27
Strength to Weight: Bending, points 26 to 40
23
Thermal Shock Resistance, points 29 to 54
21

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 0.080
Chromium (Cr), % 0
22.5 to 25.5
Cobalt (Co), % 7.0 to 8.5
0
Iron (Fe), % 66.3 to 71.1
56 to 66.4
Manganese (Mn), % 0 to 0.1
0 to 1.0
Molybdenum (Mo), % 4.6 to 5.2
3.0 to 4.5
Nickel (Ni), % 17 to 19
8.0 to 11
Nitrogen (N), % 0
0.1 to 0.3
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