MakeItFrom.com
Menu (ESC)

Grade 350 Maraging Steel vs. R31233 Cobalt

Grade 350 maraging steel belongs to the iron alloys classification, while R31233 cobalt belongs to the cobalt alloys. They have a modest 29% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 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 350 maraging steel and the bottom bar is R31233 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 4.1 to 18
17
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 75
85
Tensile Strength: Ultimate (UTS), MPa 1140 to 2420
1020
Tensile Strength: Yield (Proof), MPa 830 to 2300
420

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Melting Completion (Liquidus), °C 1470
1350
Melting Onset (Solidus), °C 1420
1330
Specific Heat Capacity, J/kg-K 450
440
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Density, g/cm3 8.2
8.6
Embodied Carbon, kg CO2/kg material 5.6
8.4
Embodied Energy, MJ/kg 74
110
Embodied Water, L/kg 160
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 190
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 38 to 82
33
Strength to Weight: Bending, points 29 to 49
26
Thermal Shock Resistance, points 35 to 74
25

Alloy Composition

Aluminum (Al), % 0.050 to 0.15
0
Boron (B), % 0 to 0.0030
0 to 0.015
Calcium (Ca), % 0 to 0.050
0
Carbon (C), % 0 to 0.030
0.020 to 0.1
Chromium (Cr), % 0
23.5 to 27.5
Cobalt (Co), % 11.5 to 12.5
44.7 to 63.3
Iron (Fe), % 61.2 to 64.6
1.0 to 5.0
Manganese (Mn), % 0 to 0.1
0.1 to 1.5
Molybdenum (Mo), % 4.6 to 5.2
4.0 to 6.0
Nickel (Ni), % 18 to 19
7.0 to 11
Nitrogen (N), % 0
0.030 to 0.12
Phosphorus (P), % 0 to 0.010
0 to 0.030
Silicon (Si), % 0 to 0.1
0.050 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.020
Titanium (Ti), % 1.3 to 1.6
0
Tungsten (W), % 0
1.0 to 3.0
Zirconium (Zr), % 0 to 0.020
0