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AISI 431 Stainless Steel vs. EN 2.4669 Nickel

AISI 431 stainless steel belongs to the iron alloys classification, while EN 2.4669 nickel belongs to the nickel alloys. They have a modest 25% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 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 431 stainless steel and the bottom bar is EN 2.4669 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 15 to 17
16
Fatigue Strength, MPa 430 to 610
390
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 550 to 840
680
Tensile Strength: Ultimate (UTS), MPa 890 to 1380
1110
Tensile Strength: Yield (Proof), MPa 710 to 1040
720

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Mechanical, °C 850
960
Melting Completion (Liquidus), °C 1510
1380
Melting Onset (Solidus), °C 1450
1330
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 26
12
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
60
Density, g/cm3 7.7
8.4
Embodied Carbon, kg CO2/kg material 2.2
10
Embodied Energy, MJ/kg 31
150
Embodied Water, L/kg 120
260

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 180
160
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 2770
1380
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 32 to 50
37
Strength to Weight: Bending, points 27 to 36
28
Thermal Diffusivity, mm2/s 7.0
3.1
Thermal Shock Resistance, points 28 to 43
33

Alloy Composition

Aluminum (Al), % 0
0.4 to 1.0
Carbon (C), % 0 to 0.2
0 to 0.080
Chromium (Cr), % 15 to 17
14 to 17
Cobalt (Co), % 0
0 to 1.0
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 78.2 to 83.8
5.0 to 9.0
Manganese (Mn), % 0 to 1.0
0 to 1.0
Nickel (Ni), % 1.3 to 2.5
65.9 to 77.7
Niobium (Nb), % 0
0.7 to 1.2
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
2.3 to 2.8