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Nickel 686 vs. EN 1.4615 Stainless Steel

Nickel 686 belongs to the nickel alloys classification, while EN 1.4615 stainless steel belongs to the iron alloys. They have a modest 24% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is nickel 686 and the bottom bar is EN 1.4615 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 51
50
Fatigue Strength, MPa 410
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 560
360
Tensile Strength: Ultimate (UTS), MPa 780
500
Tensile Strength: Yield (Proof), MPa 350
200

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Maximum Temperature: Mechanical, °C 980
840
Melting Completion (Liquidus), °C 1380
1400
Melting Onset (Solidus), °C 1340
1360
Specific Heat Capacity, J/kg-K 420
480
Thermal Conductivity, W/m-K 9.8
15
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 70
13
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 12
2.8
Embodied Energy, MJ/kg 170
40
Embodied Water, L/kg 300
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
200
Resilience: Unit (Modulus of Resilience), kJ/m3 280
99
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 24
18
Strength to Weight: Bending, points 21
18
Thermal Diffusivity, mm2/s 2.6
4.1
Thermal Shock Resistance, points 21
11

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.030
Chromium (Cr), % 19 to 23
14 to 16
Copper (Cu), % 0
2.0 to 4.0
Iron (Fe), % 0 to 5.0
63.1 to 72.5
Manganese (Mn), % 0 to 0.75
7.0 to 9.0
Molybdenum (Mo), % 15 to 17
0 to 0.8
Nickel (Ni), % 49.5 to 63
4.5 to 6.0
Nitrogen (N), % 0
0.020 to 0.060
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.080
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.010
Titanium (Ti), % 0.020 to 0.25
0
Tungsten (W), % 3.0 to 4.4
0