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Nickel 686 vs. EN 1.4317 Stainless Steel

Nickel 686 belongs to the nickel alloys classification, while EN 1.4317 stainless steel belongs to the iron alloys. They have a modest 20% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 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 1.4317 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 51
17
Fatigue Strength, MPa 410
380
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 780
860
Tensile Strength: Yield (Proof), MPa 350
630

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Maximum Temperature: Mechanical, °C 980
770
Melting Completion (Liquidus), °C 1380
1440
Melting Onset (Solidus), °C 1340
1400
Specific Heat Capacity, J/kg-K 420
480
Thermal Conductivity, W/m-K 9.8
26
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 70
10
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 12
2.4
Embodied Energy, MJ/kg 170
33
Embodied Water, L/kg 300
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
130
Resilience: Unit (Modulus of Resilience), kJ/m3 280
1010
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 24
31
Strength to Weight: Bending, points 21
26
Thermal Diffusivity, mm2/s 2.6
7.0
Thermal Shock Resistance, points 21
30

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.060
Chromium (Cr), % 19 to 23
12 to 13.5
Iron (Fe), % 0 to 5.0
78.7 to 84.5
Manganese (Mn), % 0 to 0.75
0 to 1.0
Molybdenum (Mo), % 15 to 17
0 to 0.7
Nickel (Ni), % 49.5 to 63
3.5 to 5.0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 0.080
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.025
Titanium (Ti), % 0.020 to 0.25
0
Tungsten (W), % 3.0 to 4.4
0