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S21800 Stainless Steel vs. C72900 Copper-nickel

S21800 stainless steel belongs to the iron alloys classification, while C72900 copper-nickel belongs to the copper alloys. There are 25 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 S21800 stainless steel and the bottom bar is C72900 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 40
6.0 to 20
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 75
45
Shear Strength, MPa 510
540 to 630
Tensile Strength: Ultimate (UTS), MPa 740
870 to 1080
Tensile Strength: Yield (Proof), MPa 390
700 to 920

Thermal Properties

Latent Heat of Fusion, J/g 340
210
Maximum Temperature: Mechanical, °C 900
210
Melting Completion (Liquidus), °C 1360
1120
Melting Onset (Solidus), °C 1310
950
Specific Heat Capacity, J/kg-K 500
380
Thermal Expansion, µm/m-K 16
17

Otherwise Unclassified Properties

Base Metal Price, % relative 15
39
Density, g/cm3 7.5
8.8
Embodied Carbon, kg CO2/kg material 3.1
4.6
Embodied Energy, MJ/kg 45
72
Embodied Water, L/kg 150
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
49 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 390
2030 to 3490
Stiffness to Weight: Axial, points 14
7.6
Stiffness to Weight: Bending, points 26
19
Strength to Weight: Axial, points 27
27 to 34
Strength to Weight: Bending, points 24
23 to 27
Thermal Shock Resistance, points 17
31 to 38

Alloy Composition

Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 16 to 18
0
Copper (Cu), % 0
74.1 to 78
Iron (Fe), % 59.1 to 65.4
0 to 0.5
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 7.0 to 9.0
0 to 0.3
Nickel (Ni), % 8.0 to 9.0
14.5 to 15.5
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0.080 to 0.18
0
Phosphorus (P), % 0 to 0.060
0
Silicon (Si), % 3.5 to 4.5
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
7.5 to 8.5
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.3