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AISI 420F Stainless Steel vs. Nickel 690

AISI 420F stainless steel belongs to the iron alloys classification, while nickel 690 belongs to the nickel alloys. They have a modest 23% 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 (2, in this case) are not shown.

For each property being compared, the top bar is AISI 420F stainless steel and the bottom bar is nickel 690.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
90
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 18
3.4 to 34
Fatigue Strength, MPa 270
180 to 300
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
79
Shear Strength, MPa 460
420 to 570
Tensile Strength: Ultimate (UTS), MPa 740
640 to 990
Tensile Strength: Yield (Proof), MPa 430
250 to 760

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Maximum Temperature: Mechanical, °C 760
1010
Melting Completion (Liquidus), °C 1440
1380
Melting Onset (Solidus), °C 1390
1340
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
14
Thermal Expansion, µm/m-K 10
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 3.7
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
50
Density, g/cm3 7.7
8.3
Embodied Carbon, kg CO2/kg material 2.0
8.2
Embodied Energy, MJ/kg 28
120
Embodied Water, L/kg 100
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
31 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 480
160 to 1440
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27
21 to 33
Strength to Weight: Bending, points 23
20 to 27
Thermal Diffusivity, mm2/s 6.8
3.5
Thermal Shock Resistance, points 27
16 to 25

Alloy Composition

Carbon (C), % 0.3 to 0.4
0 to 0.050
Chromium (Cr), % 12 to 14
27 to 31
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 82.4 to 87.6
7.0 to 11
Manganese (Mn), % 0 to 1.3
0 to 0.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0
58 to 66
Phosphorus (P), % 0 to 0.060
0
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0.15 to 0.35
0 to 0.015