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Nickel 725 vs. AWS E318

Nickel 725 belongs to the nickel alloys classification, while AWS E318 belongs to the iron alloys. They have 43% of their average alloy composition in common. There are 22 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 nickel 725 and the bottom bar is AWS E318.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
29
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 78
78
Tensile Strength: Ultimate (UTS), MPa 860
620

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Melting Completion (Liquidus), °C 1340
1440
Melting Onset (Solidus), °C 1270
1400
Specific Heat Capacity, J/kg-K 440
470
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 75
23
Density, g/cm3 8.5
7.9
Embodied Carbon, kg CO2/kg material 13
4.4
Embodied Energy, MJ/kg 190
62
Embodied Water, L/kg 270
160

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 28
22
Strength to Weight: Bending, points 24
20
Thermal Shock Resistance, points 23
16

Alloy Composition

Aluminum (Al), % 0 to 0.35
0
Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 19 to 22.5
17 to 20
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 2.3 to 15.3
57.6 to 69.5
Manganese (Mn), % 0 to 0.35
0.5 to 2.5
Molybdenum (Mo), % 7.0 to 9.5
2.0 to 3.0
Nickel (Ni), % 55 to 59
11 to 14
Niobium (Nb), % 2.8 to 4.0
0 to 1.0
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.2
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 1.0 to 1.7
0