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EN 1.4652 Stainless Steel vs. R30003 Cobalt

EN 1.4652 stainless steel belongs to the iron alloys classification, while R30003 cobalt belongs to the cobalt alloys. They have 60% of their average alloy composition in common. 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 EN 1.4652 stainless steel and the bottom bar is R30003 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 45
10 to 73
Fatigue Strength, MPa 450
320 to 560
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 81
83
Tensile Strength: Ultimate (UTS), MPa 880
970 to 1720
Tensile Strength: Yield (Proof), MPa 490
510 to 1090

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1410
1440
Specific Heat Capacity, J/kg-K 460
450
Thermal Conductivity, W/m-K 9.8
13
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 34
95
Density, g/cm3 8.0
8.4
Embodied Carbon, kg CO2/kg material 6.4
8.0
Embodied Energy, MJ/kg 87
110
Embodied Water, L/kg 220
400

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 570
600 to 2790
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 30
32 to 57
Strength to Weight: Bending, points 25
26 to 38
Thermal Diffusivity, mm2/s 2.6
3.3
Thermal Shock Resistance, points 20
26 to 45

Alloy Composition

Boron (B), % 0
0 to 0.1
Carbon (C), % 0 to 0.020
0 to 0.15
Chromium (Cr), % 23 to 25
19 to 21
Cobalt (Co), % 0
39 to 41
Copper (Cu), % 0.3 to 0.6
0
Iron (Fe), % 38.3 to 46.3
10 to 20.5
Manganese (Mn), % 2.0 to 4.0
1.5 to 2.5
Molybdenum (Mo), % 7.0 to 8.0
6.0 to 8.0
Nickel (Ni), % 21 to 23
14 to 16
Nitrogen (N), % 0.45 to 0.55
0
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0 to 0.5
0 to 1.2
Sulfur (S), % 0 to 0.0050
0 to 0.015