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ASTM F15 Fe-Ni-Co vs. S31260 Stainless Steel

Both ASTM F15 Fe-Ni-Co and S31260 stainless steel are iron alloys. They have 60% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (11, 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 S31260 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.3
0.27
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 520 to 880
790

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1410
1450
Melting Onset (Solidus), °C 1450
1400
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 17
16
Thermal Expansion, µm/m-K 6.0
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 4.0
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 49
20
Density, g/cm3 8.3
7.8
Embodied Carbon, kg CO2/kg material 5.2
3.9
Embodied Energy, MJ/kg 71
53
Embodied Water, L/kg 190
180

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 17 to 29
28
Strength to Weight: Bending, points 17 to 24
24
Thermal Diffusivity, mm2/s 4.5
4.3
Thermal Shock Resistance, points 32 to 55
22

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Carbon (C), % 0 to 0.040
0 to 0.030
Chromium (Cr), % 0 to 0.2
24 to 26
Cobalt (Co), % 16 to 18
0
Copper (Cu), % 0 to 0.2
0.2 to 0.8
Iron (Fe), % 50.3 to 56
59.6 to 67.6
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0 to 1.0
Molybdenum (Mo), % 0 to 0.2
2.5 to 3.5
Nickel (Ni), % 28 to 30
5.5 to 7.5
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.2
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.1
0
Tungsten (W), % 0
0.1 to 0.5
Zirconium (Zr), % 0 to 0.1
0