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AWS E310H vs. R30003 Cobalt

AWS E310H belongs to the iron alloys classification, while R30003 cobalt belongs to the cobalt alloys. They have 53% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AWS E310H and the bottom bar is R30003 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 11
10 to 73
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
83
Tensile Strength: Ultimate (UTS), MPa 690
970 to 1720

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Melting Completion (Liquidus), °C 1400
1400
Melting Onset (Solidus), °C 1350
1440
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 14
13
Thermal Expansion, µm/m-K 14
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 26
95
Density, g/cm3 7.9
8.4
Embodied Carbon, kg CO2/kg material 4.6
8.0
Embodied Energy, MJ/kg 65
110
Embodied Water, L/kg 200
400

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
32 to 57
Strength to Weight: Bending, points 22
26 to 38
Thermal Diffusivity, mm2/s 3.8
3.3
Thermal Shock Resistance, points 17
26 to 45

Alloy Composition

Boron (B), % 0
0 to 0.1
Carbon (C), % 0.35 to 0.45
0 to 0.15
Chromium (Cr), % 25 to 28
19 to 21
Cobalt (Co), % 0
39 to 41
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 44.2 to 53.7
10 to 20.5
Manganese (Mn), % 1.0 to 2.5
1.5 to 2.5
Molybdenum (Mo), % 0 to 0.75
6.0 to 8.0
Nickel (Ni), % 20 to 22.5
14 to 16
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0 to 0.75
0 to 1.2
Sulfur (S), % 0 to 0.030
0 to 0.015