MakeItFrom.com
Menu (ESC)

EN 1.4020 Stainless Steel vs. R30003 Cobalt

EN 1.4020 stainless steel belongs to the iron alloys classification, while R30003 cobalt belongs to the cobalt alloys. They have a modest 37% of their average alloy composition in common, which, by itself, doesn't mean much. There are 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is EN 1.4020 stainless steel and the bottom bar is R30003 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 13 to 34
10 to 73
Fatigue Strength, MPa 340 to 540
320 to 560
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
83
Tensile Strength: Ultimate (UTS), MPa 770 to 1130
970 to 1720
Tensile Strength: Yield (Proof), MPa 430 to 950
510 to 1090

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Melting Completion (Liquidus), °C 1390
1400
Melting Onset (Solidus), °C 1350
1440
Specific Heat Capacity, J/kg-K 480
450
Thermal Expansion, µm/m-K 17
13

Otherwise Unclassified Properties

Base Metal Price, % relative 11
95
Density, g/cm3 7.6
8.4
Embodied Carbon, kg CO2/kg material 2.5
8.0
Embodied Energy, MJ/kg 37
110
Embodied Water, L/kg 150
400

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 2290
600 to 2790
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 28 to 41
32 to 57
Strength to Weight: Bending, points 25 to 32
26 to 38
Thermal Shock Resistance, points 16 to 23
26 to 45

Alloy Composition

Boron (B), % 0
0 to 0.1
Carbon (C), % 0 to 0.15
0 to 0.15
Chromium (Cr), % 16.5 to 19
19 to 21
Cobalt (Co), % 0
39 to 41
Iron (Fe), % 62.8 to 71.8
10 to 20.5
Manganese (Mn), % 11 to 14
1.5 to 2.5
Molybdenum (Mo), % 0
6.0 to 8.0
Nickel (Ni), % 0.5 to 2.5
14 to 16
Nitrogen (N), % 0.2 to 0.45
0
Phosphorus (P), % 0 to 0.045
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 1.2
Sulfur (S), % 0 to 0.030
0 to 0.015