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ASTM F15 Fe-Ni-Co vs. S31277 Stainless Steel

Both ASTM F15 Fe-Ni-Co and S31277 stainless steel are iron alloys. They have 69% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is ASTM F15 Fe-Ni-Co and the bottom bar is S31277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 520 to 880
860

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1450
1410
Specific Heat Capacity, J/kg-K 460
460
Thermal Expansion, µm/m-K 6.0
16

Otherwise Unclassified Properties

Base Metal Price, % relative 49
36
Density, g/cm3 8.3
8.1
Embodied Carbon, kg CO2/kg material 5.2
6.7
Embodied Energy, MJ/kg 71
90
Embodied Water, L/kg 190
220

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 17 to 29
29
Strength to Weight: Bending, points 17 to 24
25
Thermal Shock Resistance, points 32 to 55
19

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Carbon (C), % 0 to 0.040
0 to 0.020
Chromium (Cr), % 0 to 0.2
20.5 to 23
Cobalt (Co), % 16 to 18
0
Copper (Cu), % 0 to 0.2
0.5 to 1.5
Iron (Fe), % 50.3 to 56
35.5 to 46.2
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0 to 3.0
Molybdenum (Mo), % 0 to 0.2
6.5 to 8.0
Nickel (Ni), % 28 to 30
26 to 28
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.2
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.1
0
Zirconium (Zr), % 0 to 0.1
0