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Grade 250 Maraging Steel vs. ACI-ASTM CN3M Steel

Both grade 250 maraging steel and ACI-ASTM CN3M steel are iron alloys. They have 70% 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 grade 250 maraging steel and the bottom bar is ACI-ASTM CN3M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 7.3 to 17
34
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 75
80
Tensile Strength: Ultimate (UTS), MPa 970 to 1800
500
Tensile Strength: Yield (Proof), MPa 660 to 1740
190

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Melting Completion (Liquidus), °C 1480
1450
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 450
470
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 32
31
Density, g/cm3 8.2
8.1
Embodied Carbon, kg CO2/kg material 4.9
5.9
Embodied Energy, MJ/kg 65
80
Embodied Water, L/kg 140
200

Common Calculations

PREN (Pitting Resistance) 16
38
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 150
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 33 to 61
17
Strength to Weight: Bending, points 26 to 40
17
Thermal Shock Resistance, points 29 to 54
11

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 0.030
Chromium (Cr), % 0
20 to 22
Cobalt (Co), % 7.0 to 8.5
0
Iron (Fe), % 66.3 to 71.1
42.4 to 52.5
Manganese (Mn), % 0 to 0.1
0 to 2.0
Molybdenum (Mo), % 4.6 to 5.2
4.5 to 5.5
Nickel (Ni), % 17 to 19
23 to 27
Phosphorus (P), % 0 to 0.010
0 to 0.030
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0.3 to 0.5
0
Zirconium (Zr), % 0 to 0.020
0