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Nickel 825 vs. Nickel 685

Both nickel 825 and nickel 685 are nickel alloys. They have 67% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is nickel 825 and the bottom bar is nickel 685.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
17
Fatigue Strength, MPa 190
470
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
77
Shear Strength, MPa 430
770
Tensile Strength: Ultimate (UTS), MPa 650
1250
Tensile Strength: Yield (Proof), MPa 260
850

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Mechanical, °C 980
1000
Melting Completion (Liquidus), °C 1400
1380
Melting Onset (Solidus), °C 1370
1330
Specific Heat Capacity, J/kg-K 460
460
Thermal Conductivity, W/m-K 11
13
Thermal Expansion, µm/m-K 14
12

Otherwise Unclassified Properties

Base Metal Price, % relative 41
75
Density, g/cm3 8.2
8.4
Embodied Carbon, kg CO2/kg material 7.2
10
Embodied Energy, MJ/kg 100
140
Embodied Water, L/kg 230
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
190
Resilience: Unit (Modulus of Resilience), kJ/m3 170
1820
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 22
42
Strength to Weight: Bending, points 20
31
Thermal Diffusivity, mm2/s 2.9
3.3
Thermal Shock Resistance, points 17
37

Alloy Composition

Aluminum (Al), % 0 to 0.2
1.2 to 1.6
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.050
0.030 to 0.1
Chromium (Cr), % 19.5 to 23.5
18 to 21
Cobalt (Co), % 0
12 to 15
Copper (Cu), % 1.5 to 3.0
0 to 0.5
Iron (Fe), % 22 to 37.9
0 to 2.0
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
3.5 to 5.0
Nickel (Ni), % 38 to 46
49.6 to 62.5
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.050
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0.6 to 1.2
2.8 to 3.3
Zinc (Zn), % 0
0.020 to 0.12