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AISI 440A Stainless Steel vs. EN 2.4650 Nickel

AISI 440A stainless steel belongs to the iron alloys classification, while EN 2.4650 nickel belongs to the nickel alloys. There are 29 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 AISI 440A stainless steel and the bottom bar is EN 2.4650 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 5.0 to 20
34
Fatigue Strength, MPa 270 to 790
480
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
80
Shear Strength, MPa 450 to 1040
730
Tensile Strength: Ultimate (UTS), MPa 730 to 1790
1090
Tensile Strength: Yield (Proof), MPa 420 to 1650
650

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Mechanical, °C 760
1010
Melting Completion (Liquidus), °C 1480
1400
Melting Onset (Solidus), °C 1370
1350
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 23
12
Thermal Expansion, µm/m-K 10
11

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
80
Density, g/cm3 7.7
8.5
Embodied Carbon, kg CO2/kg material 2.2
10
Embodied Energy, MJ/kg 31
140
Embodied Water, L/kg 120
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 120
320
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 26 to 65
36
Strength to Weight: Bending, points 23 to 43
28
Thermal Diffusivity, mm2/s 6.2
3.1
Thermal Shock Resistance, points 26 to 65
33

Alloy Composition

Aluminum (Al), % 0
0.3 to 0.6
Boron (B), % 0
0 to 0.0050
Carbon (C), % 0.6 to 0.75
0.040 to 0.080
Chromium (Cr), % 16 to 18
19 to 21
Cobalt (Co), % 0
19 to 21
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 78.4 to 83.4
0 to 0.7
Manganese (Mn), % 0 to 1.0
0 to 0.6
Molybdenum (Mo), % 0 to 0.75
5.6 to 6.1
Nickel (Ni), % 0
46.9 to 54.2
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.0070
Titanium (Ti), % 0
1.9 to 2.4