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ASTM F15 Fe-Ni-Co vs. AWS ERNiCu-7

ASTM F15 Fe-Ni-Co belongs to the iron alloys classification, while AWS ERNiCu-7 belongs to the nickel alloys. They have a modest 31% of their average alloy composition in common, which, by itself, doesn't mean much. There are 23 material properties with values for both materials. Properties with values for just one material (2, 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 AWS ERNiCu-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
160
Poisson's Ratio 0.3
0.32
Shear Modulus, GPa 73
61
Tensile Strength: Ultimate (UTS), MPa 520 to 880
550

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1410
1280
Melting Onset (Solidus), °C 1450
1240
Specific Heat Capacity, J/kg-K 460
440
Thermal Conductivity, W/m-K 17
20
Thermal Expansion, µm/m-K 6.0
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
3.2
Electrical Conductivity: Equal Weight (Specific), % IACS 4.0
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 49
50
Density, g/cm3 8.3
8.7
Embodied Carbon, kg CO2/kg material 5.2
8.5
Embodied Energy, MJ/kg 71
120
Embodied Water, L/kg 190
250

Common Calculations

Stiffness to Weight: Axial, points 13
10
Stiffness to Weight: Bending, points 23
21
Strength to Weight: Axial, points 17 to 29
18
Strength to Weight: Bending, points 17 to 24
17
Thermal Diffusivity, mm2/s 4.5
5.3
Thermal Shock Resistance, points 32 to 55
19

Alloy Composition

Aluminum (Al), % 0 to 0.1
0 to 1.3
Carbon (C), % 0 to 0.040
0 to 0.15
Chromium (Cr), % 0 to 0.2
0
Cobalt (Co), % 16 to 18
0
Copper (Cu), % 0 to 0.2
18.3 to 36.5
Iron (Fe), % 50.3 to 56
0 to 2.5
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0 to 4.0
Molybdenum (Mo), % 0 to 0.2
0
Nickel (Ni), % 28 to 30
62 to 69
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.2
0 to 1.3
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.1
1.5 to 3.0
Zirconium (Zr), % 0 to 0.1
0
Residuals, % 0
0 to 0.5