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AISI 310 Stainless Steel vs. G-CoCr28 Cobalt

AISI 310 stainless steel belongs to the iron alloys classification, while G-CoCr28 cobalt belongs to the cobalt alloys. They have 46% of their average alloy composition in common. 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 AISI 310 stainless steel and the bottom bar is G-CoCr28 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 34 to 45
6.7
Fatigue Strength, MPa 240 to 280
130
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 78
83
Tensile Strength: Ultimate (UTS), MPa 600 to 710
560
Tensile Strength: Yield (Proof), MPa 260 to 350
260

Thermal Properties

Latent Heat of Fusion, J/g 310
320
Maximum Temperature: Mechanical, °C 1040
1200
Melting Completion (Liquidus), °C 1450
1330
Melting Onset (Solidus), °C 1400
1270
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
8.5
Thermal Expansion, µm/m-K 15
14

Otherwise Unclassified Properties

Base Metal Price, % relative 25
100
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 4.3
6.2
Embodied Energy, MJ/kg 61
84
Embodied Water, L/kg 190
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 220
31
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 310
160
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21 to 25
19
Strength to Weight: Bending, points 20 to 22
19
Thermal Diffusivity, mm2/s 3.9
2.2
Thermal Shock Resistance, points 14 to 17
14

Alloy Composition

Carbon (C), % 0 to 0.25
0.050 to 0.25
Chromium (Cr), % 24 to 26
27 to 30
Cobalt (Co), % 0
48 to 52
Iron (Fe), % 48.2 to 57
9.7 to 24.5
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 19 to 22
0 to 4.0
Niobium (Nb), % 0
0 to 0.5
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.5
0.5 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.030