MakeItFrom.com
Menu (ESC)

R31233 Cobalt vs. EN 1.4901 Stainless Steel

R31233 cobalt belongs to the cobalt alloys classification, while EN 1.4901 stainless steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is R31233 cobalt and the bottom bar is EN 1.4901 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 17
19
Fatigue Strength, MPa 220
310
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 85
76
Tensile Strength: Ultimate (UTS), MPa 1020
740
Tensile Strength: Yield (Proof), MPa 420
490

Thermal Properties

Latent Heat of Fusion, J/g 320
260
Melting Completion (Liquidus), °C 1350
1490
Melting Onset (Solidus), °C 1330
1450
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 12
26
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
8.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
9.3

Otherwise Unclassified Properties

Density, g/cm3 8.6
7.9
Embodied Carbon, kg CO2/kg material 8.4
2.8
Embodied Energy, MJ/kg 110
40
Embodied Water, L/kg 480
89

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
120
Resilience: Unit (Modulus of Resilience), kJ/m3 410
620
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 33
26
Strength to Weight: Bending, points 26
23
Thermal Diffusivity, mm2/s 3.2
6.9
Thermal Shock Resistance, points 25
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0 to 0.015
0.0010 to 0.0060
Carbon (C), % 0.020 to 0.1
0.070 to 0.13
Chromium (Cr), % 23.5 to 27.5
8.5 to 9.5
Cobalt (Co), % 44.7 to 63.3
0
Iron (Fe), % 1.0 to 5.0
85.8 to 89.1
Manganese (Mn), % 0.1 to 1.5
0.3 to 0.6
Molybdenum (Mo), % 4.0 to 6.0
0.3 to 0.6
Nickel (Ni), % 7.0 to 11
0 to 0.4
Niobium (Nb), % 0
0.040 to 0.090
Nitrogen (N), % 0.030 to 0.12
0.030 to 0.070
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0.050 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.020
0 to 0.010
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 1.0 to 3.0
1.5 to 2.0
Vanadium (V), % 0
0.15 to 0.25
Zirconium (Zr), % 0
0 to 0.010