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Nickel 686 vs. EN 1.4612 Stainless Steel

Nickel 686 belongs to the nickel alloys classification, while EN 1.4612 stainless steel belongs to the iron alloys. They have a modest 27% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is nickel 686 and the bottom bar is EN 1.4612 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 51
11
Fatigue Strength, MPa 410
860 to 950
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 560
1010 to 1110
Tensile Strength: Ultimate (UTS), MPa 780
1690 to 1850
Tensile Strength: Yield (Proof), MPa 350
1570 to 1730

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Maximum Temperature: Mechanical, °C 980
790
Melting Completion (Liquidus), °C 1380
1450
Melting Onset (Solidus), °C 1340
1400
Specific Heat Capacity, J/kg-K 420
480
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 70
16
Density, g/cm3 9.0
7.9
Embodied Carbon, kg CO2/kg material 12
3.6
Embodied Energy, MJ/kg 170
50
Embodied Water, L/kg 300
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
190 to 210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 24
60 to 65
Strength to Weight: Bending, points 21
40 to 43
Thermal Shock Resistance, points 21
58 to 63

Alloy Composition

Aluminum (Al), % 0
1.4 to 1.8
Carbon (C), % 0 to 0.010
0 to 0.015
Chromium (Cr), % 19 to 23
11 to 12.5
Iron (Fe), % 0 to 5.0
71.5 to 75.5
Manganese (Mn), % 0 to 0.75
0 to 0.1
Molybdenum (Mo), % 15 to 17
1.8 to 2.3
Nickel (Ni), % 49.5 to 63
10.2 to 11.3
Nitrogen (N), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.040
0 to 0.010
Silicon (Si), % 0 to 0.080
0 to 0.1
Sulfur (S), % 0 to 0.020
0 to 0.0050
Titanium (Ti), % 0.020 to 0.25
0.2 to 0.5
Tungsten (W), % 3.0 to 4.4
0