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ASTM F15 Fe-Ni-Co vs. SAE-AISI T8 Steel

Both ASTM F15 Fe-Ni-Co and SAE-AISI T8 steel are iron alloys. They have 59% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (4, 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 SAE-AISI T8 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 520 to 880
780 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1410
1730
Melting Onset (Solidus), °C 1450
1670
Specific Heat Capacity, J/kg-K 460
420
Thermal Conductivity, W/m-K 17
18
Thermal Expansion, µm/m-K 6.0
12

Otherwise Unclassified Properties

Base Metal Price, % relative 49
45
Density, g/cm3 8.3
9.0
Embodied Carbon, kg CO2/kg material 5.2
10
Embodied Energy, MJ/kg 71
160
Embodied Water, L/kg 190
120

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 23
22
Strength to Weight: Axial, points 17 to 29
24 to 66
Strength to Weight: Bending, points 17 to 24
21 to 41
Thermal Diffusivity, mm2/s 4.5
4.8
Thermal Shock Resistance, points 32 to 55
24 to 66

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Carbon (C), % 0 to 0.040
0.75 to 0.85
Chromium (Cr), % 0 to 0.2
3.8 to 4.5
Cobalt (Co), % 16 to 18
4.3 to 5.8
Copper (Cu), % 0 to 0.2
0 to 0.25
Iron (Fe), % 50.3 to 56
69.3 to 75.4
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0.2 to 0.4
Molybdenum (Mo), % 0 to 0.2
0.4 to 1.0
Nickel (Ni), % 28 to 30
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.2
0.2 to 0.4
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.1
0
Tungsten (W), % 0
13.3 to 14.8
Vanadium (V), % 0
1.8 to 2.4
Zirconium (Zr), % 0 to 0.1
0

Comparable Variants