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EN 1.4525 Stainless Steel vs. R30012 Cobalt

EN 1.4525 stainless steel belongs to the iron alloys classification, while R30012 cobalt belongs to the cobalt alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4525 stainless steel and the bottom bar is R30012 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 5.6 to 13
1.0
Fatigue Strength, MPa 480 to 540
320
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
86
Tensile Strength: Ultimate (UTS), MPa 1030 to 1250
830
Tensile Strength: Yield (Proof), MPa 840 to 1120
650

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Melting Completion (Liquidus), °C 1430
1470
Melting Onset (Solidus), °C 1390
1280
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 18
15
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
1.8

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.8
Embodied Carbon, kg CO2/kg material 2.8
8.3
Embodied Energy, MJ/kg 39
120
Embodied Water, L/kg 130
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 68 to 130
7.7
Resilience: Unit (Modulus of Resilience), kJ/m3 1820 to 3230
960
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 36 to 45
26
Strength to Weight: Bending, points 29 to 33
22
Thermal Diffusivity, mm2/s 4.7
3.8
Thermal Shock Resistance, points 34 to 41
23

Alloy Composition

Carbon (C), % 0 to 0.070
1.4 to 2.0
Chromium (Cr), % 15 to 17
27 to 32
Cobalt (Co), % 0
47.5 to 64.1
Copper (Cu), % 2.5 to 4.0
0
Iron (Fe), % 70.4 to 79
0 to 3.0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0 to 0.8
0 to 1.0
Nickel (Ni), % 3.5 to 5.5
0 to 3.0
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 0.8
0 to 2.0
Sulfur (S), % 0 to 0.025
0
Tungsten (W), % 0
7.5 to 9.5