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EN 1.4597 Stainless Steel vs. R30035 Cobalt

EN 1.4597 stainless steel belongs to the iron alloys classification, while R30035 cobalt belongs to the cobalt alloys. There are 28 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 1.4597 stainless steel and the bottom bar is R30035 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220 to 230
Elongation at Break, % 45
9.0 to 46
Fatigue Strength, MPa 300
170 to 740
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
84 to 89
Tensile Strength: Ultimate (UTS), MPa 680
900 to 1900
Tensile Strength: Yield (Proof), MPa 330
300 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1350
1320
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 15
11
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 11
100
Density, g/cm3 7.7
8.7
Embodied Carbon, kg CO2/kg material 2.5
10
Embodied Energy, MJ/kg 36
140
Embodied Water, L/kg 140
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
160 to 320
Resilience: Unit (Modulus of Resilience), kJ/m3 280
210 to 5920
Stiffness to Weight: Axial, points 14
14 to 15
Stiffness to Weight: Bending, points 25
23 to 24
Strength to Weight: Axial, points 25
29 to 61
Strength to Weight: Bending, points 22
24 to 39
Thermal Diffusivity, mm2/s 4.1
3.0
Thermal Shock Resistance, points 15
23 to 46

Alloy Composition

Boron (B), % 0
0 to 0.015
Carbon (C), % 0 to 0.1
0 to 0.025
Chromium (Cr), % 15 to 18
19 to 21
Cobalt (Co), % 0
29.1 to 39
Copper (Cu), % 2.0 to 3.5
0
Iron (Fe), % 63 to 76.4
0 to 1.0
Manganese (Mn), % 6.5 to 9.0
0 to 0.15
Molybdenum (Mo), % 0 to 1.0
9.0 to 10.5
Nickel (Ni), % 0 to 3.0
33 to 37
Nitrogen (N), % 0.1 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 2.0
0 to 0.15
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0 to 1.0