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Nickel 685 vs. EN 1.4669 Stainless Steel

Nickel 685 belongs to the nickel alloys classification, while EN 1.4669 stainless steel belongs to the iron alloys. They have a modest 24% 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 EN 1.4669 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 350
260
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
28
Fatigue Strength, MPa 470
330
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 77
78
Shear Strength, MPa 770
500
Tensile Strength: Ultimate (UTS), MPa 1250
780
Tensile Strength: Yield (Proof), MPa 850
450

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Maximum Temperature: Mechanical, °C 1000
1030
Melting Completion (Liquidus), °C 1380
1420
Melting Onset (Solidus), °C 1330
1370
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 75
13
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 10
2.6
Embodied Energy, MJ/kg 140
38
Embodied Water, L/kg 340
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
190
Resilience: Unit (Modulus of Resilience), kJ/m3 1820
510
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 42
28
Strength to Weight: Bending, points 31
24
Thermal Diffusivity, mm2/s 3.3
4.0
Thermal Shock Resistance, points 37
21

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 0.045
Chromium (Cr), % 18 to 21
21.5 to 24
Cobalt (Co), % 12 to 15
0
Copper (Cu), % 0 to 0.5
1.6 to 3.0
Iron (Fe), % 0 to 2.0
65.2 to 74.8
Manganese (Mn), % 0 to 1.0
1.0 to 3.0
Molybdenum (Mo), % 3.5 to 5.0
0 to 0.5
Nickel (Ni), % 49.6 to 62.5
1.0 to 3.0
Nitrogen (N), % 0
0.12 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.040
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