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ASTM F15 Fe-Ni-Co vs. S21600 Stainless Steel

Both ASTM F15 Fe-Ni-Co and S21600 stainless steel are iron alloys. They have 60% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (17, 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 S21600 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 73
79
Tensile Strength: Ultimate (UTS), MPa 520 to 880
710

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1410
1420
Melting Onset (Solidus), °C 1450
1380
Specific Heat Capacity, J/kg-K 460
480
Thermal Expansion, µm/m-K 6.0
17

Otherwise Unclassified Properties

Base Metal Price, % relative 49
17
Density, g/cm3 8.3
7.7
Embodied Carbon, kg CO2/kg material 5.2
3.6
Embodied Energy, MJ/kg 71
50
Embodied Water, L/kg 190
160

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 17 to 29
25
Strength to Weight: Bending, points 17 to 24
23
Thermal Shock Resistance, points 32 to 55
15

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Carbon (C), % 0 to 0.040
0 to 0.080
Chromium (Cr), % 0 to 0.2
17.5 to 22
Cobalt (Co), % 16 to 18
0
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 50.3 to 56
57.6 to 67.8
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
7.5 to 9.0
Molybdenum (Mo), % 0 to 0.2
2.0 to 3.0
Nickel (Ni), % 28 to 30
5.0 to 7.0
Nitrogen (N), % 0
0.25 to 0.5
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.2
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.1
0
Zirconium (Zr), % 0 to 0.1
0