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EN 1.6958 Steel vs. ASTM F15 Fe-Ni-Co

Both EN 1.6958 steel and ASTM F15 Fe-Ni-Co are iron alloys. They have 57% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is EN 1.6958 steel and the bottom bar is ASTM F15 Fe-Ni-Co.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 1140
520 to 880

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1460
1410
Melting Onset (Solidus), °C 1420
1450
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 47
17
Thermal Expansion, µm/m-K 11
6.0

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
4.0

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
49
Density, g/cm3 7.9
8.3
Embodied Carbon, kg CO2/kg material 2.0
5.2
Embodied Energy, MJ/kg 27
71
Embodied Water, L/kg 60
190

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 40
17 to 29
Strength to Weight: Bending, points 31
17 to 24
Thermal Diffusivity, mm2/s 13
4.5
Thermal Shock Resistance, points 39
32 to 55

Alloy Composition

Aluminum (Al), % 0.0050 to 0.050
0 to 0.1
Carbon (C), % 0.25 to 0.3
0 to 0.040
Chromium (Cr), % 1.2 to 1.7
0 to 0.2
Cobalt (Co), % 0
16 to 18
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 92.6 to 94.5
50.3 to 56
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0.2 to 0.5
0 to 0.5
Molybdenum (Mo), % 0.35 to 0.55
0 to 0.2
Nickel (Ni), % 3.3 to 3.8
28 to 30
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0.15 to 0.3
0 to 0.2
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.1
Vanadium (V), % 0 to 0.12
0
Zirconium (Zr), % 0
0 to 0.1