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Nickel 684 vs. AISI 316N Stainless Steel

Nickel 684 belongs to the nickel alloys classification, while AISI 316N stainless steel belongs to the iron alloys. They have a modest 34% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is nickel 684 and the bottom bar is AISI 316N stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
190 to 350
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
9.0 to 39
Fatigue Strength, MPa 390
230 to 450
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 76
78
Shear Strength, MPa 710
420 to 690
Tensile Strength: Ultimate (UTS), MPa 1190
620 to 1160
Tensile Strength: Yield (Proof), MPa 800
270 to 870

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Maximum Temperature: Mechanical, °C 1000
940
Melting Completion (Liquidus), °C 1370
1440
Melting Onset (Solidus), °C 1320
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 75
19
Density, g/cm3 8.3
7.9
Embodied Carbon, kg CO2/kg material 10
3.9
Embodied Energy, MJ/kg 140
53
Embodied Water, L/kg 360
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
95 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 1610
180 to 1880
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 40
22 to 41
Strength to Weight: Bending, points 30
20 to 31
Thermal Shock Resistance, points 34
14 to 26

Alloy Composition

Aluminum (Al), % 2.5 to 3.3
0
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0 to 0.15
0 to 0.080
Chromium (Cr), % 15 to 20
16 to 18
Cobalt (Co), % 13 to 20
0
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 0 to 4.0
61.9 to 71.9
Manganese (Mn), % 0 to 0.75
0 to 2.0
Molybdenum (Mo), % 3.0 to 5.0
2.0 to 3.0
Nickel (Ni), % 42.7 to 64
10 to 14
Nitrogen (N), % 0
0.1 to 0.16
Phosphorus (P), % 0 to 0.015
0 to 0.045
Silicon (Si), % 0 to 0.75
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 2.5 to 3.3
0