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S21800 Stainless Steel vs. C70700 Copper-nickel

S21800 stainless steel belongs to the iron alloys classification, while C70700 copper-nickel belongs to the copper alloys. 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 C70700 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
73
Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 40
39
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 75
46
Shear Strength, MPa 510
220
Tensile Strength: Ultimate (UTS), MPa 740
320
Tensile Strength: Yield (Proof), MPa 390
110

Thermal Properties

Latent Heat of Fusion, J/g 340
220
Maximum Temperature: Mechanical, °C 900
220
Melting Completion (Liquidus), °C 1360
1120
Melting Onset (Solidus), °C 1310
1060
Specific Heat Capacity, J/kg-K 500
390
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 15
34
Density, g/cm3 7.5
8.9
Embodied Carbon, kg CO2/kg material 3.1
3.4
Embodied Energy, MJ/kg 45
52
Embodied Water, L/kg 150
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
100
Resilience: Unit (Modulus of Resilience), kJ/m3 390
51
Stiffness to Weight: Axial, points 14
7.6
Stiffness to Weight: Bending, points 26
19
Strength to Weight: Axial, points 27
10
Strength to Weight: Bending, points 24
12
Thermal Shock Resistance, points 17
12

Alloy Composition

Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 16 to 18
0
Copper (Cu), % 0
88.5 to 90.5
Iron (Fe), % 59.1 to 65.4
0 to 0.050
Manganese (Mn), % 7.0 to 9.0
0 to 0.5
Nickel (Ni), % 8.0 to 9.0
9.5 to 10.5
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
Residuals, % 0
0 to 0.5