MakeItFrom.com
Menu (ESC)

EN 1.4415 Stainless Steel vs. R30816 Cobalt

EN 1.4415 stainless steel belongs to the iron alloys classification, while R30816 cobalt belongs to the cobalt alloys. They have a modest 23% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 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 1.4415 stainless steel and the bottom bar is R30816 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 17 to 20
23
Fatigue Strength, MPa 470 to 510
250
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 77
81
Tensile Strength: Ultimate (UTS), MPa 830 to 930
1020
Tensile Strength: Yield (Proof), MPa 730 to 840
460

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Melting Completion (Liquidus), °C 1460
1540
Melting Onset (Solidus), °C 1420
1460
Specific Heat Capacity, J/kg-K 470
420
Thermal Conductivity, W/m-K 19
13
Thermal Expansion, µm/m-K 9.9
12

Otherwise Unclassified Properties

Density, g/cm3 7.9
9.1
Embodied Carbon, kg CO2/kg material 3.6
20
Embodied Energy, MJ/kg 51
320
Embodied Water, L/kg 120
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 160
190
Resilience: Unit (Modulus of Resilience), kJ/m3 1350 to 1790
510
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 29 to 33
31
Strength to Weight: Bending, points 25 to 27
25
Thermal Diffusivity, mm2/s 5.1
3.3
Thermal Shock Resistance, points 30 to 34
28

Alloy Composition

Carbon (C), % 0 to 0.030
0.32 to 0.42
Chromium (Cr), % 11.5 to 13.5
19 to 21
Cobalt (Co), % 0
40 to 49.8
Iron (Fe), % 75.9 to 82.4
0 to 5.0
Manganese (Mn), % 0 to 0.5
1.0 to 2.0
Molybdenum (Mo), % 1.5 to 2.5
3.5 to 4.5
Nickel (Ni), % 4.5 to 6.5
19 to 21
Niobium (Nb), % 0
3.5 to 4.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tantalum (Ta), % 0
3.5 to 4.5
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 0
3.5 to 4.5
Vanadium (V), % 0.1 to 0.5
0