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AISI 440A Stainless Steel vs. N06650 Nickel

AISI 440A stainless steel belongs to the iron alloys classification, while N06650 nickel belongs to the nickel alloys. They have a modest 32% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AISI 440A stainless steel and the bottom bar is N06650 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 5.0 to 20
50
Fatigue Strength, MPa 270 to 790
420
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
82
Shear Strength, MPa 450 to 1040
640
Tensile Strength: Ultimate (UTS), MPa 730 to 1790
900
Tensile Strength: Yield (Proof), MPa 420 to 1650
460

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Mechanical, °C 760
980
Melting Completion (Liquidus), °C 1480
1500
Melting Onset (Solidus), °C 1370
1450
Specific Heat Capacity, J/kg-K 480
440
Thermal Expansion, µm/m-K 10
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
60
Density, g/cm3 7.7
8.6
Embodied Carbon, kg CO2/kg material 2.2
10
Embodied Energy, MJ/kg 31
140
Embodied Water, L/kg 120
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 120
380
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 26 to 65
29
Strength to Weight: Bending, points 23 to 43
24
Thermal Shock Resistance, points 26 to 65
24

Alloy Composition

Aluminum (Al), % 0
0.050 to 0.5
Carbon (C), % 0.6 to 0.75
0 to 0.030
Chromium (Cr), % 16 to 18
19 to 21
Cobalt (Co), % 0
0 to 1.0
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 78.4 to 83.4
12 to 16
Manganese (Mn), % 0 to 1.0
0 to 0.5
Molybdenum (Mo), % 0 to 0.75
9.5 to 12.5
Nickel (Ni), % 0
44.4 to 58.9
Niobium (Nb), % 0
0.050 to 0.5
Nitrogen (N), % 0
0.050 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.010
Tungsten (W), % 0
0.5 to 2.5