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Nickel 685 vs. EN 1.4547 Stainless Steel

Nickel 685 belongs to the nickel alloys classification, while EN 1.4547 stainless steel belongs to the iron alloys. They have 44% of their average alloy composition in common. 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 EN 1.4547 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 350
230
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
39
Fatigue Strength, MPa 470
290
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
80
Shear Strength, MPa 770
510
Tensile Strength: Ultimate (UTS), MPa 1250
750
Tensile Strength: Yield (Proof), MPa 850
340

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Maximum Temperature: Mechanical, °C 1000
1090
Melting Completion (Liquidus), °C 1380
1470
Melting Onset (Solidus), °C 1330
1420
Specific Heat Capacity, J/kg-K 460
460
Thermal Conductivity, W/m-K 13
14
Thermal Expansion, µm/m-K 12
17

Otherwise Unclassified Properties

Base Metal Price, % relative 75
28
Density, g/cm3 8.4
8.0
Embodied Carbon, kg CO2/kg material 10
5.6
Embodied Energy, MJ/kg 140
75
Embodied Water, L/kg 340
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
240
Resilience: Unit (Modulus of Resilience), kJ/m3 1820
290
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 42
26
Strength to Weight: Bending, points 31
23
Thermal Diffusivity, mm2/s 3.3
3.8
Thermal Shock Resistance, points 37
16

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 0.020
Chromium (Cr), % 18 to 21
19.5 to 20.5
Cobalt (Co), % 12 to 15
0
Copper (Cu), % 0 to 0.5
0.5 to 1.0
Iron (Fe), % 0 to 2.0
51 to 56.3
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 3.5 to 5.0
6.0 to 7.0
Nickel (Ni), % 49.6 to 62.5
17.5 to 18.5
Nitrogen (N), % 0
0.18 to 0.25
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.75
0 to 0.7
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 2.8 to 3.3
0
Zinc (Zn), % 0.020 to 0.12
0