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SAE-AISI O2 Steel vs. Grade 250 Maraging Steel

Both SAE-AISI O2 steel and grade 250 maraging steel are iron alloys. They have 69% of their average alloy composition in common. There are 19 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 SAE-AISI O2 steel and the bottom bar is grade 250 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 72
75
Tensile Strength: Ultimate (UTS), MPa 640 to 2050
970 to 1800

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1450
1480
Melting Onset (Solidus), °C 1410
1430
Specific Heat Capacity, J/kg-K 470
450
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
32
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 1.8
4.9
Embodied Energy, MJ/kg 26
65
Embodied Water, L/kg 50
140

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 23 to 73
33 to 61
Strength to Weight: Bending, points 21 to 46
26 to 40
Thermal Shock Resistance, points 22 to 70
29 to 54

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), % 0.85 to 1.0
0 to 0.030
Chromium (Cr), % 0 to 0.5
0
Cobalt (Co), % 0
7.0 to 8.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 95 to 97.8
66.3 to 71.1
Manganese (Mn), % 1.4 to 1.8
0 to 0.1
Molybdenum (Mo), % 0 to 0.3
4.6 to 5.2
Nickel (Ni), % 0 to 0.3
17 to 19
Phosphorus (P), % 0 to 0.030
0 to 0.010
Silicon (Si), % 0 to 0.5
0 to 0.1
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0.3 to 0.5
Vanadium (V), % 0 to 0.3
0
Zirconium (Zr), % 0
0 to 0.020

Comparable Variants