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AISI 440A Stainless Steel vs. N08221 Nickel

AISI 440A stainless steel belongs to the iron alloys classification, while N08221 nickel belongs to the nickel alloys. They have 46% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is AISI 440A stainless steel and the bottom bar is N08221 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 5.0 to 20
34
Fatigue Strength, MPa 270 to 790
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
79
Shear Strength, MPa 450 to 1040
410
Tensile Strength: Ultimate (UTS), MPa 730 to 1790
610
Tensile Strength: Yield (Proof), MPa 420 to 1650
270

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Mechanical, °C 760
980
Melting Completion (Liquidus), °C 1480
1440
Melting Onset (Solidus), °C 1370
1390
Specific Heat Capacity, J/kg-K 480
460
Thermal Expansion, µm/m-K 10
13

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
44
Density, g/cm3 7.7
8.3
Embodied Carbon, kg CO2/kg material 2.2
7.9
Embodied Energy, MJ/kg 31
110
Embodied Water, L/kg 120
240

Common Calculations

PREN (Pitting Resistance) 18
40
Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 120
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26 to 65
21
Strength to Weight: Bending, points 23 to 43
19
Thermal Shock Resistance, points 26 to 65
16

Alloy Composition

Aluminum (Al), % 0
0 to 0.2
Carbon (C), % 0.6 to 0.75
0 to 0.025
Chromium (Cr), % 16 to 18
20 to 22
Copper (Cu), % 0
1.5 to 3.0
Iron (Fe), % 78.4 to 83.4
22 to 33.9
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.75
5.0 to 6.5
Nickel (Ni), % 0
39 to 46
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.050
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0
0.6 to 1.0