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R30012 Cobalt vs. EN 1.4107 Stainless Steel

R30012 cobalt belongs to the cobalt alloys classification, while EN 1.4107 stainless steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is R30012 cobalt and the bottom bar is EN 1.4107 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 1.0
18 to 21
Fatigue Strength, MPa 320
260 to 350
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 86
76
Tensile Strength: Ultimate (UTS), MPa 830
620 to 700
Tensile Strength: Yield (Proof), MPa 650
400 to 570

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1280
1410
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 15
27
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
3.3

Otherwise Unclassified Properties

Density, g/cm3 8.8
7.8
Embodied Carbon, kg CO2/kg material 8.3
2.1
Embodied Energy, MJ/kg 120
30
Embodied Water, L/kg 480
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.7
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 960
420 to 840
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26
22 to 25
Strength to Weight: Bending, points 22
21 to 22
Thermal Diffusivity, mm2/s 3.8
7.2
Thermal Shock Resistance, points 23
22 to 25

Alloy Composition

Carbon (C), % 1.4 to 2.0
0 to 0.1
Chromium (Cr), % 27 to 32
11.5 to 12.5
Cobalt (Co), % 47.5 to 64.1
0
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 0 to 3.0
83.8 to 87.2
Manganese (Mn), % 0
0.5 to 0.8
Molybdenum (Mo), % 0 to 1.0
0 to 0.5
Nickel (Ni), % 0 to 3.0
0.8 to 1.5
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 2.0
0 to 0.4
Sulfur (S), % 0
0 to 0.020
Tungsten (W), % 7.5 to 9.5
0
Vanadium (V), % 0
0 to 0.080