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S21800 Stainless Steel vs. EN 2.4650 Nickel

S21800 stainless steel belongs to the iron alloys classification, while EN 2.4650 nickel belongs to the nickel alloys. They have a modest 26% of their average alloy composition in common, which, by itself, doesn't mean much. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is S21800 stainless steel and the bottom bar is EN 2.4650 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 40
34
Fatigue Strength, MPa 330
480
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
80
Shear Strength, MPa 510
730
Tensile Strength: Ultimate (UTS), MPa 740
1090
Tensile Strength: Yield (Proof), MPa 390
650

Thermal Properties

Latent Heat of Fusion, J/g 340
320
Maximum Temperature: Mechanical, °C 900
1010
Melting Completion (Liquidus), °C 1360
1400
Melting Onset (Solidus), °C 1310
1350
Specific Heat Capacity, J/kg-K 500
450
Thermal Expansion, µm/m-K 16
11

Otherwise Unclassified Properties

Base Metal Price, % relative 15
80
Density, g/cm3 7.5
8.5
Embodied Carbon, kg CO2/kg material 3.1
10
Embodied Energy, MJ/kg 45
140
Embodied Water, L/kg 150
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
320
Resilience: Unit (Modulus of Resilience), kJ/m3 390
1030
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 26
23
Strength to Weight: Axial, points 27
36
Strength to Weight: Bending, points 24
28
Thermal Shock Resistance, points 17
33

Alloy Composition

Aluminum (Al), % 0
0.3 to 0.6
Boron (B), % 0
0 to 0.0050
Carbon (C), % 0 to 0.1
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), % 59.1 to 65.4
0 to 0.7
Manganese (Mn), % 7.0 to 9.0
0 to 0.6
Molybdenum (Mo), % 0
5.6 to 6.1
Nickel (Ni), % 8.0 to 9.0
46.9 to 54.2
Nitrogen (N), % 0.080 to 0.18
0
Phosphorus (P), % 0 to 0.060
0 to 0.020
Silicon (Si), % 3.5 to 4.5
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.0070
Titanium (Ti), % 0
1.9 to 2.4