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Nickel 690 vs. AISI 422 Stainless Steel

Nickel 690 belongs to the nickel alloys classification, while AISI 422 stainless steel belongs to the iron alloys. They have a modest 22% of their average alloy composition in common, which, by itself, doesn't mean much. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is nickel 690 and the bottom bar is AISI 422 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 90
260 to 330
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 3.4 to 34
15 to 17
Fatigue Strength, MPa 180 to 300
410 to 500
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
76
Shear Strength, MPa 420 to 570
560 to 660
Tensile Strength: Ultimate (UTS), MPa 640 to 990
910 to 1080
Tensile Strength: Yield (Proof), MPa 250 to 760
670 to 870

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Maximum Temperature: Mechanical, °C 1010
650
Melting Completion (Liquidus), °C 1380
1480
Melting Onset (Solidus), °C 1340
1470
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 14
24
Thermal Expansion, µm/m-K 14
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
4.7
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
5.3

Otherwise Unclassified Properties

Base Metal Price, % relative 50
11
Density, g/cm3 8.3
7.9
Embodied Carbon, kg CO2/kg material 8.2
3.1
Embodied Energy, MJ/kg 120
44
Embodied Water, L/kg 290
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 170
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 1440
1140 to 1910
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21 to 33
32 to 38
Strength to Weight: Bending, points 20 to 27
26 to 30
Thermal Diffusivity, mm2/s 3.5
6.4
Thermal Shock Resistance, points 16 to 25
33 to 39

Alloy Composition

Carbon (C), % 0 to 0.050
0.2 to 0.25
Chromium (Cr), % 27 to 31
11 to 12.5
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 7.0 to 11
81.9 to 85.8
Manganese (Mn), % 0 to 0.5
0.5 to 1.0
Molybdenum (Mo), % 0
0.9 to 1.3
Nickel (Ni), % 58 to 66
0.5 to 1.0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.025
Tungsten (W), % 0
0.9 to 1.3
Vanadium (V), % 0
0.2 to 0.3