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Grade 200 Maraging Steel vs. R30006 Cobalt

Grade 200 maraging steel belongs to the iron alloys classification, while R30006 cobalt belongs to the cobalt alloys. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is grade 200 maraging steel and the bottom bar is R30006 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 730 to 1260
1520
Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 9.1 to 18
1.0
Poisson's Ratio 0.3
0.28
Rockwell C Hardness 29 to 45
40
Shear Modulus, GPa 74
85
Tensile Strength: Ultimate (UTS), MPa 970 to 1500
900
Tensile Strength: Yield (Proof), MPa 690 to 1490
540

Thermal Properties

Latent Heat of Fusion, J/g 260
320
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1420
1290
Specific Heat Capacity, J/kg-K 460
450
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Density, g/cm3 8.2
8.6
Embodied Carbon, kg CO2/kg material 4.5
7.8
Embodied Energy, MJ/kg 59
110
Embodied Water, L/kg 140
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
7.8
Resilience: Unit (Modulus of Resilience), kJ/m3 1240 to 5740
670
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 33 to 51
29
Strength to Weight: Bending, points 27 to 35
24
Thermal Shock Resistance, points 29 to 45
26

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
0.9 to 1.4
Chromium (Cr), % 0
27 to 32
Cobalt (Co), % 8.0 to 9.0
48.6 to 68.1
Iron (Fe), % 67.8 to 71.8
0 to 3.0
Manganese (Mn), % 0 to 0.1
0
Molybdenum (Mo), % 3.0 to 3.5
0 to 1.0
Nickel (Ni), % 17 to 19
0 to 3.0
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0 to 0.1
0 to 2.0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0.15 to 0.25
0
Tungsten (W), % 0
4.0 to 6.0
Zirconium (Zr), % 0 to 0.020
0