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Nickel 685 vs. S33425 Stainless Steel

Nickel 685 belongs to the nickel alloys classification, while S33425 stainless steel belongs to the iron alloys. They have 46% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is nickel 685 and the bottom bar is S33425 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 350
170
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
Shear Modulus, GPa 77
79
Shear Strength, MPa 770
400
Tensile Strength: Ultimate (UTS), MPa 1250
580
Tensile Strength: Yield (Proof), MPa 850
230

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Maximum Temperature: Mechanical, °C 1000
1100
Melting Completion (Liquidus), °C 1380
1430
Melting Onset (Solidus), °C 1330
1380
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 13
14
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 75
27
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 10
5.1
Embodied Energy, MJ/kg 140
71
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
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 42
20
Strength to Weight: Bending, points 31
19
Thermal Diffusivity, mm2/s 3.3
3.7
Thermal Shock Resistance, points 37
13

Alloy Composition

Aluminum (Al), % 1.2 to 1.6
0.15 to 0.6
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.030 to 0.1
0 to 0.080
Chromium (Cr), % 18 to 21
21 to 23
Cobalt (Co), % 12 to 15
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 0 to 2.0
47.2 to 56.7
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 3.5 to 5.0
2.0 to 3.0
Nickel (Ni), % 49.6 to 62.5
20 to 23
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 2.8 to 3.3
0.15 to 0.6
Zinc (Zn), % 0.020 to 0.12
0