MakeItFrom.com
Menu (ESC)

EN 1.4938 Stainless Steel vs. R31537 Cobalt

EN 1.4938 stainless steel belongs to the iron alloys classification, while R31537 cobalt belongs to the cobalt alloys. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.4938 stainless steel and the bottom bar is R31537 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 16 to 17
14 to 23
Fatigue Strength, MPa 390 to 520
310 to 480
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
87
Tensile Strength: Ultimate (UTS), MPa 870 to 1030
1000 to 1340
Tensile Strength: Yield (Proof), MPa 640 to 870
590 to 940

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Melting Completion (Liquidus), °C 1460
1360
Melting Onset (Solidus), °C 1420
1290
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 30
13
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.1

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 3.3
8.1
Embodied Energy, MJ/kg 47
110
Embodied Water, L/kg 110
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
140 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 1050 to 1920
780 to 1990
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 31 to 37
33 to 44
Strength to Weight: Bending, points 26 to 29
26 to 32
Thermal Diffusivity, mm2/s 8.1
3.4
Thermal Shock Resistance, points 30 to 35
24 to 32

Alloy Composition

Carbon (C), % 0.080 to 0.15
0 to 0.14
Chromium (Cr), % 11 to 12.5
26 to 30
Cobalt (Co), % 0
58.9 to 69
Iron (Fe), % 80.5 to 84.8
0 to 0.75
Manganese (Mn), % 0.4 to 0.9
0 to 1.0
Molybdenum (Mo), % 1.5 to 2.0
5.0 to 7.0
Nickel (Ni), % 2.0 to 3.0
0 to 1.0
Nitrogen (N), % 0.020 to 0.040
0 to 0.25
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0
Vanadium (V), % 0.25 to 0.4
0

Comparable Variants