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AISI 440A Stainless Steel vs. N07776 Nickel

AISI 440A stainless steel belongs to the iron alloys classification, while N07776 nickel belongs to the nickel alloys. They have a modest 30% 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 (8, in this case) are not shown.

For each property being compared, the top bar is AISI 440A stainless steel and the bottom bar is N07776 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 5.0 to 20
39
Fatigue Strength, MPa 270 to 790
220
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 77
79
Shear Strength, MPa 450 to 1040
470
Tensile Strength: Ultimate (UTS), MPa 730 to 1790
700
Tensile Strength: Yield (Proof), MPa 420 to 1650
270

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Mechanical, °C 760
970
Melting Completion (Liquidus), °C 1480
1550
Melting Onset (Solidus), °C 1370
1500
Specific Heat Capacity, J/kg-K 480
430
Thermal Expansion, µm/m-K 10
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
85
Density, g/cm3 7.7
8.6
Embodied Carbon, kg CO2/kg material 2.2
15
Embodied Energy, MJ/kg 31
210
Embodied Water, L/kg 120
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 120
220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 26 to 65
22
Strength to Weight: Bending, points 23 to 43
20
Thermal Shock Resistance, points 26 to 65
20

Alloy Composition

Aluminum (Al), % 0
0 to 2.0
Carbon (C), % 0.6 to 0.75
0 to 0.030
Chromium (Cr), % 16 to 18
12 to 22
Iron (Fe), % 78.4 to 83.4
0 to 24.5
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.75
9.0 to 15
Nickel (Ni), % 0
50 to 60
Niobium (Nb), % 0
4.0 to 6.0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.010
Titanium (Ti), % 0
0 to 1.0
Tungsten (W), % 0
0.5 to 2.5