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ASTM F15 Fe-Ni-Co vs. ACI-ASTM CK35MN Steel

Both ASTM F15 Fe-Ni-Co and ACI-ASTM CK35MN steel are iron alloys. They have 69% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (10, 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 ACI-ASTM CK35MN 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
81
Tensile Strength: Ultimate (UTS), MPa 520 to 880
650

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
470
Thermal Conductivity, W/m-K 17
12
Thermal Expansion, µm/m-K 6.0
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 4.0
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 49
31
Density, g/cm3 8.3
8.0
Embodied Carbon, kg CO2/kg material 5.2
5.9
Embodied Energy, MJ/kg 71
81
Embodied Water, L/kg 190
210

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 17 to 29
22
Strength to Weight: Bending, points 17 to 24
21
Thermal Diffusivity, mm2/s 4.5
3.3
Thermal Shock Resistance, points 32 to 55
14

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Carbon (C), % 0 to 0.040
0 to 0.035
Chromium (Cr), % 0 to 0.2
22 to 24
Cobalt (Co), % 16 to 18
0
Copper (Cu), % 0 to 0.2
0 to 0.4
Iron (Fe), % 50.3 to 56
43.4 to 51.8
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0 to 2.0
Molybdenum (Mo), % 0 to 0.2
6.0 to 6.8
Nickel (Ni), % 28 to 30
20 to 22
Nitrogen (N), % 0
0.21 to 0.32
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.2
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.1
0
Zirconium (Zr), % 0 to 0.1
0