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S21800 Stainless Steel vs. C71580 Copper-nickel

S21800 stainless steel belongs to the iron alloys classification, while C71580 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 C71580 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
75
Elastic (Young's, Tensile) Modulus, GPa 190
140
Elongation at Break, % 40
40
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 75
51
Shear Strength, MPa 510
230
Tensile Strength: Ultimate (UTS), MPa 740
330
Tensile Strength: Yield (Proof), MPa 390
110

Thermal Properties

Latent Heat of Fusion, J/g 340
230
Maximum Temperature: Mechanical, °C 900
260
Melting Completion (Liquidus), °C 1360
1180
Melting Onset (Solidus), °C 1310
1120
Specific Heat Capacity, J/kg-K 500
400
Thermal Expansion, µm/m-K 16
15

Otherwise Unclassified Properties

Base Metal Price, % relative 15
41
Density, g/cm3 7.5
8.9
Embodied Carbon, kg CO2/kg material 3.1
5.1
Embodied Energy, MJ/kg 45
74
Embodied Water, L/kg 150
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
100
Resilience: Unit (Modulus of Resilience), kJ/m3 390
47
Stiffness to Weight: Axial, points 14
8.5
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
11

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.070
Chromium (Cr), % 16 to 18
0
Copper (Cu), % 0
65.5 to 71
Iron (Fe), % 59.1 to 65.4
0 to 0.5
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 7.0 to 9.0
0 to 0.3
Nickel (Ni), % 8.0 to 9.0
29 to 33
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
Zinc (Zn), % 0
0 to 0.050
Residuals, % 0
0 to 0.5