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S21900 Stainless Steel vs. EN 2.4856 Nickel

S21900 stainless steel belongs to the iron alloys classification, while EN 2.4856 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 31 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 S21900 stainless steel and the bottom bar is EN 2.4856 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 50
28
Fatigue Strength, MPa 380
280
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
79
Shear Strength, MPa 510
570
Tensile Strength: Ultimate (UTS), MPa 710
880
Tensile Strength: Yield (Proof), MPa 390
430

Thermal Properties

Latent Heat of Fusion, J/g 290
330
Maximum Temperature: Mechanical, °C 980
1000
Melting Completion (Liquidus), °C 1400
1480
Melting Onset (Solidus), °C 1350
1430
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 14
10
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 15
80
Density, g/cm3 7.7
8.6
Embodied Carbon, kg CO2/kg material 3.0
14
Embodied Energy, MJ/kg 43
190
Embodied Water, L/kg 160
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 300
200
Resilience: Unit (Modulus of Resilience), kJ/m3 380
440
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 26
28
Strength to Weight: Bending, points 23
24
Thermal Diffusivity, mm2/s 3.8
2.7
Thermal Shock Resistance, points 15
29

Alloy Composition

Aluminum (Al), % 0
0 to 0.4
Carbon (C), % 0 to 0.080
0.030 to 0.1
Chromium (Cr), % 19 to 21.5
20 to 23
Cobalt (Co), % 0
0 to 1.0
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 59.4 to 67.4
0 to 5.0
Manganese (Mn), % 8.0 to 10
0 to 0.5
Molybdenum (Mo), % 0
8.0 to 10
Nickel (Ni), % 5.5 to 7.5
58 to 68.8
Niobium (Nb), % 0
3.2 to 4.2
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
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
0 to 0.4