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Nickel 690 vs. EN 1.4634 Stainless Steel

Nickel 690 belongs to the nickel alloys classification, while EN 1.4634 stainless steel belongs to the iron alloys. They have a modest 28% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is nickel 690 and the bottom bar is EN 1.4634 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 3.4 to 34
21
Fatigue Strength, MPa 180 to 300
180
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
77
Shear Strength, MPa 420 to 570
340
Tensile Strength: Ultimate (UTS), MPa 640 to 990
540
Tensile Strength: Yield (Proof), MPa 250 to 760
280

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Maximum Temperature: Mechanical, °C 1010
900
Melting Completion (Liquidus), °C 1380
1430
Melting Onset (Solidus), °C 1340
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
21
Thermal Expansion, µm/m-K 14
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 50
13
Density, g/cm3 8.3
7.7
Embodied Carbon, kg CO2/kg material 8.2
2.9
Embodied Energy, MJ/kg 120
42
Embodied Water, L/kg 290
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 170
93
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 1440
200
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21 to 33
20
Strength to Weight: Bending, points 20 to 27
19
Thermal Diffusivity, mm2/s 3.5
5.8
Thermal Shock Resistance, points 16 to 25
19

Alloy Composition

Aluminum (Al), % 0
0.2 to 1.5
Carbon (C), % 0 to 0.050
0 to 0.030
Chromium (Cr), % 27 to 31
17.5 to 18.5
Copper (Cu), % 0 to 0.5
0 to 0.5
Iron (Fe), % 7.0 to 11
74.9 to 81.8
Manganese (Mn), % 0 to 0.5
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 58 to 66
0 to 0.5
Niobium (Nb), % 0
0.3 to 1.0
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0 to 0.5
0.2 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.050