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Nickel 685 vs. EN 1.4594 Stainless Steel

Nickel 685 belongs to the nickel alloys classification, while EN 1.4594 stainless steel belongs to the iron alloys. They have a modest 23% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 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 1.4594 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
11 to 17
Fatigue Strength, MPa 470
490 to 620
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 770
620 to 700
Tensile Strength: Ultimate (UTS), MPa 1250
1020 to 1170
Tensile Strength: Yield (Proof), MPa 850
810 to 1140

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Maximum Temperature: Mechanical, °C 1000
820
Melting Completion (Liquidus), °C 1380
1450
Melting Onset (Solidus), °C 1330
1410
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 13
16
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 75
15
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 10
3.2
Embodied Energy, MJ/kg 140
45
Embodied Water, L/kg 340
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
110 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 1820
1660 to 3320
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 42
36 to 41
Strength to Weight: Bending, points 31
29 to 31
Thermal Diffusivity, mm2/s 3.3
4.4
Thermal Shock Resistance, points 37
34 to 39

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 0.070
Chromium (Cr), % 18 to 21
13 to 15
Cobalt (Co), % 12 to 15
0
Copper (Cu), % 0 to 0.5
1.2 to 2.0
Iron (Fe), % 0 to 2.0
72.6 to 79.5
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 3.5 to 5.0
1.2 to 2.0
Nickel (Ni), % 49.6 to 62.5
5.0 to 6.0
Niobium (Nb), % 0
0.15 to 0.6
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 0.7
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 2.8 to 3.3
0
Zinc (Zn), % 0.020 to 0.12
0