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AWS E630 vs. Nickel 725

AWS E630 belongs to the iron alloys classification, while nickel 725 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 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 AWS E630 and the bottom bar is nickel 725.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 8.0
34
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 1040
860

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Melting Completion (Liquidus), °C 1430
1340
Melting Onset (Solidus), °C 1380
1270
Specific Heat Capacity, J/kg-K 470
440
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 14
75
Density, g/cm3 7.8
8.5
Embodied Carbon, kg CO2/kg material 2.8
13
Embodied Energy, MJ/kg 40
190
Embodied Water, L/kg 140
270

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 37
28
Strength to Weight: Bending, points 29
24
Thermal Shock Resistance, points 28
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.35
Carbon (C), % 0 to 0.050
0 to 0.030
Chromium (Cr), % 16 to 16.8
19 to 22.5
Copper (Cu), % 3.3 to 4.0
0
Iron (Fe), % 71.6 to 75.9
2.3 to 15.3
Manganese (Mn), % 0.25 to 0.75
0 to 0.35
Molybdenum (Mo), % 0 to 0.75
7.0 to 9.5
Nickel (Ni), % 4.5 to 5.0
55 to 59
Niobium (Nb), % 0.15 to 0.3
2.8 to 4.0
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 0.75
0 to 0.2
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
1.0 to 1.7