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Nickel 689 vs. AISI 446 Stainless Steel

Nickel 689 belongs to the nickel alloys classification, while AISI 446 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 28 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is nickel 689 and the bottom bar is AISI 446 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 350
190
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 23
23
Fatigue Strength, MPa 420
200
Poisson's Ratio 0.29
0.27
Reduction in Area, % 21
50
Shear Modulus, GPa 80
79
Shear Strength, MPa 790
360
Tensile Strength: Ultimate (UTS), MPa 1250
570
Tensile Strength: Yield (Proof), MPa 690
300

Thermal Properties

Latent Heat of Fusion, J/g 330
290
Maximum Temperature: Mechanical, °C 990
1180
Melting Completion (Liquidus), °C 1440
1510
Melting Onset (Solidus), °C 1390
1430
Specific Heat Capacity, J/kg-K 450
490
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 70
12
Density, g/cm3 8.5
7.7
Embodied Carbon, kg CO2/kg material 11
2.4
Embodied Energy, MJ/kg 150
35
Embodied Water, L/kg 330
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
110
Resilience: Unit (Modulus of Resilience), kJ/m3 1170
230
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 23
26
Strength to Weight: Axial, points 41
21
Strength to Weight: Bending, points 30
20
Thermal Shock Resistance, points 35
19

Alloy Composition

Aluminum (Al), % 0.75 to 1.3
0
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.1 to 0.2
0 to 0.2
Chromium (Cr), % 18 to 20
23 to 27
Cobalt (Co), % 9.0 to 11
0
Iron (Fe), % 0 to 5.0
69.2 to 77
Manganese (Mn), % 0 to 0.5
0 to 1.5
Molybdenum (Mo), % 9.0 to 10.5
0
Nickel (Ni), % 48.3 to 60.9
0 to 0.75
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.015
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), % 2.3 to 2.8
0