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AISI 304LN Stainless Steel vs. Nickel 686

AISI 304LN stainless steel belongs to the iron alloys classification, while nickel 686 belongs to the nickel alloys. They have a modest 32% 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 (3, in this case) are not shown.

For each property being compared, the top bar is AISI 304LN stainless steel and the bottom bar is nickel 686.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 7.8 to 46
51
Fatigue Strength, MPa 200 to 440
410
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
77
Shear Strength, MPa 400 to 680
560
Tensile Strength: Ultimate (UTS), MPa 580 to 1160
780
Tensile Strength: Yield (Proof), MPa 230 to 870
350

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Maximum Temperature: Mechanical, °C 960
980
Melting Completion (Liquidus), °C 1420
1380
Melting Onset (Solidus), °C 1380
1340
Specific Heat Capacity, J/kg-K 480
420
Thermal Conductivity, W/m-K 15
9.8
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 16
70
Density, g/cm3 7.8
9.0
Embodied Carbon, kg CO2/kg material 3.1
12
Embodied Energy, MJ/kg 44
170
Embodied Water, L/kg 150
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 270
320
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 1900
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 21 to 41
24
Strength to Weight: Bending, points 20 to 31
21
Thermal Diffusivity, mm2/s 4.0
2.6
Thermal Shock Resistance, points 13 to 26
21

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.010
Chromium (Cr), % 18 to 20
19 to 23
Iron (Fe), % 65 to 73.9
0 to 5.0
Manganese (Mn), % 0 to 2.0
0 to 0.75
Molybdenum (Mo), % 0
15 to 17
Nickel (Ni), % 8.0 to 12
49.5 to 63
Nitrogen (N), % 0.1 to 0.16
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 0.080
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0.020 to 0.25
Tungsten (W), % 0
3.0 to 4.4