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Nickel 625 vs. AWS E630

Nickel 625 belongs to the nickel alloys classification, while AWS E630 belongs to the iron alloys. They have a modest 25% of their average alloy composition in common, which, by itself, doesn't mean much. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is nickel 625 and the bottom bar is AWS E630.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 33 to 34
8.0
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 790 to 910
1040

Thermal Properties

Latent Heat of Fusion, J/g 330
280
Melting Completion (Liquidus), °C 1350
1430
Melting Onset (Solidus), °C 1290
1380
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 11
17
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.3
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 80
14
Density, g/cm3 8.6
7.8
Embodied Carbon, kg CO2/kg material 14
2.8
Embodied Energy, MJ/kg 190
40
Embodied Water, L/kg 290
140

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26 to 29
37
Strength to Weight: Bending, points 22 to 24
29
Thermal Diffusivity, mm2/s 2.9
4.5
Thermal Shock Resistance, points 22 to 25
28

Alloy Composition

Aluminum (Al), % 0 to 0.4
0
Carbon (C), % 0 to 0.1
0 to 0.050
Chromium (Cr), % 20 to 23
16 to 16.8
Cobalt (Co), % 0 to 1.0
0
Copper (Cu), % 0
3.3 to 4.0
Iron (Fe), % 0 to 5.0
71.6 to 75.9
Manganese (Mn), % 0 to 0.5
0.25 to 0.75
Molybdenum (Mo), % 8.0 to 10
0 to 0.75
Nickel (Ni), % 58 to 68.9
4.5 to 5.0
Niobium (Nb), % 3.2 to 4.2
0.15 to 0.3
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0 to 0.4
0