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Nickel 690 vs. S44660 Stainless Steel

Nickel 690 belongs to the nickel alloys classification, while S44660 stainless steel belongs to the iron alloys. They have a modest 38% 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 (3, in this case) are not shown.

For each property being compared, the top bar is nickel 690 and the bottom bar is S44660 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 90
210
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 3.4 to 34
20
Fatigue Strength, MPa 180 to 300
330
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 79
81
Shear Strength, MPa 420 to 570
410
Tensile Strength: Ultimate (UTS), MPa 640 to 990
660
Tensile Strength: Yield (Proof), MPa 250 to 760
510

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Maximum Temperature: Mechanical, °C 1010
1100
Melting Completion (Liquidus), °C 1380
1460
Melting Onset (Solidus), °C 1340
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
17
Thermal Expansion, µm/m-K 14
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 50
21
Density, g/cm3 8.3
7.7
Embodied Carbon, kg CO2/kg material 8.2
4.3
Embodied Energy, MJ/kg 120
61
Embodied Water, L/kg 290
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 170
120
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 1440
640
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21 to 33
24
Strength to Weight: Bending, points 20 to 27
22
Thermal Diffusivity, mm2/s 3.5
4.5
Thermal Shock Resistance, points 16 to 25
21

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.030
Chromium (Cr), % 27 to 31
25 to 28
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 7.0 to 11
60.4 to 71
Manganese (Mn), % 0 to 0.5
0 to 1.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 58 to 66
1.0 to 3.5
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0 to 0.040
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0
0.2 to 1.0