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Nickel 685 vs. AISI 314 Stainless Steel

Nickel 685 belongs to the nickel alloys classification, while AISI 314 stainless steel belongs to the iron alloys. They have 42% of their average alloy composition in common. There are 30 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 685 and the bottom bar is AISI 314 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 350
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
45
Fatigue Strength, MPa 470
210
Poisson's Ratio 0.29
0.28
Reduction in Area, % 20
57
Shear Modulus, GPa 77
78
Shear Strength, MPa 770
410
Tensile Strength: Ultimate (UTS), MPa 1250
590
Tensile Strength: Yield (Proof), MPa 850
230

Thermal Properties

Latent Heat of Fusion, J/g 320
330
Maximum Temperature: Mechanical, °C 1000
1100
Melting Completion (Liquidus), °C 1380
1380
Melting Onset (Solidus), °C 1330
1340
Specific Heat Capacity, J/kg-K 460
490
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 12
15

Otherwise Unclassified Properties

Base Metal Price, % relative 75
25
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 10
4.3
Embodied Energy, MJ/kg 140
62
Embodied Water, L/kg 340
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
210
Resilience: Unit (Modulus of Resilience), kJ/m3 1820
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 42
21
Strength to Weight: Bending, points 31
20
Thermal Diffusivity, mm2/s 3.3
3.9
Thermal Shock Resistance, points 37
14

Alloy Composition

Aluminum (Al), % 1.2 to 1.6
0
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.030 to 0.1
0 to 0.25
Chromium (Cr), % 18 to 21
23 to 26
Cobalt (Co), % 12 to 15
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 0 to 2.0
46.7 to 56.5
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 3.5 to 5.0
0
Nickel (Ni), % 49.6 to 62.5
19 to 22
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 0.75
1.5 to 3.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 2.8 to 3.3
0
Zinc (Zn), % 0.020 to 0.12
0