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EN 1.4567 Stainless Steel vs. R31539 Cobalt

EN 1.4567 stainless steel belongs to the iron alloys classification, while R31539 cobalt belongs to the cobalt alloys. There are 27 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 EN 1.4567 stainless steel and the bottom bar is R31539 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 22 to 51
13 to 22
Fatigue Strength, MPa 190 to 260
310 to 480
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
86
Tensile Strength: Ultimate (UTS), MPa 550 to 780
1000 to 1340
Tensile Strength: Yield (Proof), MPa 200 to 390
590 to 940

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Melting Completion (Liquidus), °C 1410
1360
Melting Onset (Solidus), °C 1370
1290
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 11
13
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.1

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 3.1
8.2
Embodied Energy, MJ/kg 43
110
Embodied Water, L/kg 150
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 220
140 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 100 to 400
780 to 2000
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19 to 27
33 to 44
Strength to Weight: Bending, points 19 to 24
27 to 32
Thermal Diffusivity, mm2/s 3.0
3.5
Thermal Shock Resistance, points 12 to 17
24 to 32

Alloy Composition

Aluminum (Al), % 0
0.3 to 1.0
Carbon (C), % 0 to 0.040
0 to 0.14
Chromium (Cr), % 17 to 19
26 to 30
Cobalt (Co), % 0
57.7 to 68.7
Copper (Cu), % 3.0 to 4.0
0
Iron (Fe), % 63.3 to 71.5
0 to 0.75
Lanthanum (La), % 0
0.030 to 0.2
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 8.5 to 10.5
0 to 1.0
Nitrogen (N), % 0 to 0.1
0 to 0.25
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0