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Nickel 684 vs. AWS E308Mo

Nickel 684 belongs to the nickel alloys classification, while AWS E308Mo belongs to the iron alloys. They have a modest 33% of their average alloy composition in common, which, by itself, doesn't mean much. There are 20 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is nickel 684 and the bottom bar is AWS E308Mo.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
40
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 1190
620

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Melting Completion (Liquidus), °C 1370
1440
Melting Onset (Solidus), °C 1320
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 13
14

Otherwise Unclassified Properties

Base Metal Price, % relative 75
19
Density, g/cm3 8.3
7.9
Embodied Carbon, kg CO2/kg material 10
3.8
Embodied Energy, MJ/kg 140
53
Embodied Water, L/kg 360
160

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 40
22
Strength to Weight: Bending, points 30
20
Thermal Shock Resistance, points 34
16

Alloy Composition

Aluminum (Al), % 2.5 to 3.3
0
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0 to 0.15
0 to 0.080
Chromium (Cr), % 15 to 20
18 to 21
Cobalt (Co), % 13 to 20
0
Copper (Cu), % 0 to 0.15
0 to 0.75
Iron (Fe), % 0 to 4.0
59.6 to 70.5
Manganese (Mn), % 0 to 0.75
0.5 to 2.5
Molybdenum (Mo), % 3.0 to 5.0
2.0 to 3.0
Nickel (Ni), % 42.7 to 64
9.0 to 12
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 2.5 to 3.3
0