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EN 1.4530 Stainless Steel vs. R30003 Cobalt

EN 1.4530 stainless steel belongs to the iron alloys classification, while R30003 cobalt belongs to the cobalt alloys. They have a modest 38% of their average alloy composition in common, which, by itself, doesn't mean much. There are 19 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is EN 1.4530 stainless steel and the bottom bar is R30003 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
83
Tensile Strength: Ultimate (UTS), MPa 1030 to 1370
970 to 1720

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1410
1440
Specific Heat Capacity, J/kg-K 470
450
Thermal Expansion, µm/m-K 11
13

Otherwise Unclassified Properties

Base Metal Price, % relative 15
95
Density, g/cm3 7.9
8.4
Embodied Carbon, kg CO2/kg material 3.4
8.0
Embodied Energy, MJ/kg 46
110
Embodied Water, L/kg 130
400

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 36 to 48
32 to 57
Strength to Weight: Bending, points 29 to 35
26 to 38
Thermal Shock Resistance, points 35 to 47
26 to 45

Alloy Composition

Aluminum (Al), % 0.6 to 0.8
0
Boron (B), % 0
0 to 0.1
Carbon (C), % 0 to 0.015
0 to 0.15
Chromium (Cr), % 11.5 to 12.5
19 to 21
Cobalt (Co), % 0
39 to 41
Iron (Fe), % 74.4 to 77.3
10 to 20.5
Manganese (Mn), % 0 to 0.1
1.5 to 2.5
Molybdenum (Mo), % 1.9 to 2.2
6.0 to 8.0
Nickel (Ni), % 8.5 to 9.5
14 to 16
Nitrogen (N), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.010
0 to 0.015
Silicon (Si), % 0 to 0.1
0 to 1.2
Sulfur (S), % 0 to 0.0050
0 to 0.015
Titanium (Ti), % 0.28 to 0.37
0