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50Cr-50Ni Alloy vs. S21800 Stainless Steel

50Cr-50Ni alloy belongs to the otherwise unclassified metals classification, while S21800 stainless steel belongs to the iron alloys. They have a modest 27% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is 50Cr-50Ni alloy and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 5.7
40
Poisson's Ratio 0.26
0.28
Shear Modulus, GPa 84
75
Tensile Strength: Ultimate (UTS), MPa 620
740
Tensile Strength: Yield (Proof), MPa 390
390

Thermal Properties

Latent Heat of Fusion, J/g 350
340
Specific Heat Capacity, J/kg-K 490
500
Thermal Expansion, µm/m-K 15
16

Otherwise Unclassified Properties

Base Metal Price, % relative 50
15
Density, g/cm3 8.0
7.5
Embodied Carbon, kg CO2/kg material 7.9
3.1
Embodied Energy, MJ/kg 110
45
Embodied Water, L/kg 350
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
250
Resilience: Unit (Modulus of Resilience), kJ/m3 350
390
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 21
27
Strength to Weight: Bending, points 20
24
Thermal Shock Resistance, points 14
17

Alloy Composition

Aluminum (Al), % 0 to 0.25
0
Carbon (C), % 0 to 0.1
0 to 0.1
Chromium (Cr), % 48 to 52
16 to 18
Iron (Fe), % 0 to 1.0
59.1 to 65.4
Manganese (Mn), % 0 to 0.3
7.0 to 9.0
Nickel (Ni), % 44.5 to 52
8.0 to 9.0
Nitrogen (N), % 0 to 0.3
0.080 to 0.18
Phosphorus (P), % 0 to 0.020
0 to 0.060
Silicon (Si), % 0 to 1.0
3.5 to 4.5
Sulfur (S), % 0 to 0.020
0 to 0.030
Titanium (Ti), % 0 to 0.5
0