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Hot Forged R30035 Cobalt vs. EN 1.0434 +U Steel

Hot forged R30035 cobalt belongs to the cobalt alloys classification, while EN 1.0434 +U steel belongs to the iron alloys. There are 26 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 hot forged R30035 cobalt and the bottom bar is EN 1.0434 +U steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 230
190
Fatigue Strength, MPa 500
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 89
73
Tensile Strength: Ultimate (UTS), MPa 1200
460
Tensile Strength: Yield (Proof), MPa 980
250

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1320
1420
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 11
52
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 100
1.8
Density, g/cm3 8.7
7.9
Embodied Carbon, kg CO2/kg material 10
1.4
Embodied Energy, MJ/kg 140
18
Embodied Water, L/kg 410
46

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 2090
170
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 39
16
Strength to Weight: Bending, points 29
17
Thermal Diffusivity, mm2/s 3.0
14
Thermal Shock Resistance, points 29
14

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.060
Boron (B), % 0 to 0.015
0
Carbon (C), % 0 to 0.025
0.15 to 0.19
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 29.1 to 39
0
Iron (Fe), % 0 to 1.0
98.8 to 99.18
Manganese (Mn), % 0 to 0.15
0.65 to 0.85
Molybdenum (Mo), % 9.0 to 10.5
0
Nickel (Ni), % 33 to 37
0
Phosphorus (P), % 0 to 0.015
0 to 0.025
Silicon (Si), % 0 to 0.15
0 to 0.1
Sulfur (S), % 0 to 0.010
0 to 0.025
Titanium (Ti), % 0 to 1.0
0