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Nickel 725 vs. Nickel 685

Both nickel 725 and nickel 685 are nickel alloys. They have 83% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is nickel 725 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 260
470
Poisson's Ratio 0.29
0.29
Reduction in Area, % 45
20
Shear Modulus, GPa 78
77
Shear Strength, MPa 580
770
Tensile Strength: Ultimate (UTS), MPa 860
1250
Tensile Strength: Yield (Proof), MPa 350
850

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Maximum Temperature: Mechanical, °C 980
1000
Melting Completion (Liquidus), °C 1340
1380
Melting Onset (Solidus), °C 1270
1330
Specific Heat Capacity, J/kg-K 440
460
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 75
75
Density, g/cm3 8.5
8.4
Embodied Carbon, kg CO2/kg material 13
10
Embodied Energy, MJ/kg 190
140
Embodied Water, L/kg 270
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
190
Resilience: Unit (Modulus of Resilience), kJ/m3 300
1820
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 28
42
Strength to Weight: Bending, points 24
31
Thermal Shock Resistance, points 23
37

Alloy Composition

Aluminum (Al), % 0 to 0.35
1.2 to 1.6
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.030
0.030 to 0.1
Chromium (Cr), % 19 to 22.5
18 to 21
Cobalt (Co), % 0
12 to 15
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 2.3 to 15.3
0 to 2.0
Manganese (Mn), % 0 to 0.35
0 to 1.0
Molybdenum (Mo), % 7.0 to 9.5
3.5 to 5.0
Nickel (Ni), % 55 to 59
49.6 to 62.5
Niobium (Nb), % 2.8 to 4.0
0
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0 to 0.2
0 to 0.75
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 1.0 to 1.7
2.8 to 3.3
Zinc (Zn), % 0
0.020 to 0.12