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Nickel 685 vs. S30435 Stainless Steel

Nickel 685 belongs to the nickel alloys classification, while S30435 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 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is nickel 685 and the bottom bar is S30435 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 350
160
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
51
Fatigue Strength, MPa 470
170
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 770
370
Tensile Strength: Ultimate (UTS), MPa 1250
510
Tensile Strength: Yield (Proof), MPa 850
170

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Maximum Temperature: Mechanical, °C 1000
900
Melting Completion (Liquidus), °C 1380
1420
Melting Onset (Solidus), °C 1330
1380
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 13
16
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 75
14
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 10
2.9
Embodied Energy, MJ/kg 140
40
Embodied Water, L/kg 340
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
210
Resilience: Unit (Modulus of Resilience), kJ/m3 1820
77
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 42
18
Strength to Weight: Bending, points 31
18
Thermal Diffusivity, mm2/s 3.3
4.2
Thermal Shock Resistance, points 37
12

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 0.080
Chromium (Cr), % 18 to 21
16 to 18
Cobalt (Co), % 12 to 15
0
Copper (Cu), % 0 to 0.5
1.5 to 3.0
Iron (Fe), % 0 to 2.0
66.9 to 75.5
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
7.0 to 9.0
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 0.030
Titanium (Ti), % 2.8 to 3.3
0
Zinc (Zn), % 0.020 to 0.12
0