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EN 2.4642 Nickel vs. Nickel 686

Both EN 2.4642 nickel and nickel 686 are nickel alloys. They have 80% of their average alloy composition in common.

For each property being compared, the top bar is EN 2.4642 nickel and the bottom bar is nickel 686.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 34
51
Fatigue Strength, MPa 200
410
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
77
Shear Strength, MPa 450
560
Tensile Strength: Ultimate (UTS), MPa 670
780
Tensile Strength: Yield (Proof), MPa 270
350

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Maximum Temperature: Mechanical, °C 1010
980
Melting Completion (Liquidus), °C 1360
1380
Melting Onset (Solidus), °C 1320
1340
Specific Heat Capacity, J/kg-K 470
420
Thermal Conductivity, W/m-K 12
9.8
Thermal Expansion, µm/m-K 14
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 50
70
Density, g/cm3 8.3
9.0
Embodied Carbon, kg CO2/kg material 8.2
12
Embodied Energy, MJ/kg 120
170
Embodied Water, L/kg 290
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
320
Resilience: Unit (Modulus of Resilience), kJ/m3 180
280
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 23
24
Strength to Weight: Bending, points 21
21
Thermal Diffusivity, mm2/s 3.1
2.6
Thermal Shock Resistance, points 18
21

Alloy Composition

Aluminum (Al), % 0 to 0.5
0
Carbon (C), % 0 to 0.050
0 to 0.010
Chromium (Cr), % 27 to 31
19 to 23
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 7.0 to 11
0 to 5.0
Manganese (Mn), % 0 to 0.5
0 to 0.75
Molybdenum (Mo), % 0
15 to 17
Nickel (Ni), % 55.9 to 66
49.5 to 63
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 0.080
Sulfur (S), % 0 to 0.015
0 to 0.020
Titanium (Ti), % 0
0.020 to 0.25
Tungsten (W), % 0
3.0 to 4.4