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EN 1.4474 Stainless Steel vs. R30008 Cobalt

EN 1.4474 stainless steel belongs to the iron alloys classification, while R30008 cobalt belongs to the cobalt alloys. They have 42% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.4474 stainless steel and the bottom bar is R30008 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 23
1.1 to 73
Fatigue Strength, MPa 320
320 to 530
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
83
Tensile Strength: Ultimate (UTS), MPa 670
950 to 1700
Tensile Strength: Yield (Proof), MPa 480
500 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Melting Completion (Liquidus), °C 1430
1400
Melting Onset (Solidus), °C 1390
1330
Specific Heat Capacity, J/kg-K 480
450
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 17
95
Density, g/cm3 7.7
8.4
Embodied Carbon, kg CO2/kg material 3.4
8.1
Embodied Energy, MJ/kg 48
110
Embodied Water, L/kg 170
400

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 560
590 to 2720
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
31 to 56
Strength to Weight: Bending, points 22
25 to 37
Thermal Shock Resistance, points 18
25 to 44

Alloy Composition

Boron (B), % 0
0 to 0.0010
Carbon (C), % 0 to 0.050
0 to 0.15
Chromium (Cr), % 25 to 27
18.5 to 21.5
Cobalt (Co), % 0
39 to 42
Iron (Fe), % 61.2 to 69.1
7.6 to 20
Manganese (Mn), % 0 to 2.0
1.0 to 2.0
Molybdenum (Mo), % 1.3 to 2.0
6.5 to 7.5
Nickel (Ni), % 4.5 to 6.5
15 to 18
Nitrogen (N), % 0.12 to 0.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 1.2
Sulfur (S), % 0 to 0.025
0 to 0.015