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S21904 Stainless Steel vs. EN 2.4878 Nickel

S21904 stainless steel belongs to the iron alloys classification, while EN 2.4878 nickel belongs to the nickel alloys. They have a modest 28% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is S21904 stainless steel and the bottom bar is EN 2.4878 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17 to 51
13 to 17
Fatigue Strength, MPa 380 to 550
400 to 410
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
78
Shear Strength, MPa 510 to 620
750 to 760
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
1210 to 1250
Tensile Strength: Yield (Proof), MPa 390 to 910
740 to 780

Thermal Properties

Latent Heat of Fusion, J/g 290
330
Maximum Temperature: Mechanical, °C 980
1030
Melting Completion (Liquidus), °C 1400
1370
Melting Onset (Solidus), °C 1350
1320
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 14
11
Thermal Expansion, µm/m-K 17
12

Otherwise Unclassified Properties

Base Metal Price, % relative 15
80
Density, g/cm3 7.7
8.3
Embodied Carbon, kg CO2/kg material 3.0
10
Embodied Energy, MJ/kg 43
150
Embodied Water, L/kg 160
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
150 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
1370 to 1540
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25 to 36
41 to 42
Strength to Weight: Bending, points 23 to 29
31
Thermal Diffusivity, mm2/s 3.8
2.8
Thermal Shock Resistance, points 15 to 21
37 to 39

Alloy Composition

Aluminum (Al), % 0
1.2 to 1.6
Boron (B), % 0
0.010 to 0.015
Carbon (C), % 0 to 0.040
0.030 to 0.070
Chromium (Cr), % 19 to 21.5
23 to 25
Cobalt (Co), % 0
19 to 21
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 59.5 to 67.4
0 to 1.0
Manganese (Mn), % 8.0 to 10
0 to 0.5
Molybdenum (Mo), % 0
1.0 to 2.0
Nickel (Ni), % 5.5 to 7.5
43.6 to 52.2
Niobium (Nb), % 0
0.7 to 1.2
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.010
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.0070
Tantalum (Ta), % 0
0 to 0.050
Titanium (Ti), % 0
2.8 to 3.2
Zirconium (Zr), % 0
0.030 to 0.070

Comparable Variants