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S21603 Stainless Steel vs. C71640 Copper-nickel

S21603 stainless steel belongs to the iron alloys classification, while C71640 copper-nickel belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is S21603 stainless steel and the bottom bar is C71640 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
140
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
52
Tensile Strength: Ultimate (UTS), MPa 690
490 to 630
Tensile Strength: Yield (Proof), MPa 390
190 to 460

Thermal Properties

Latent Heat of Fusion, J/g 290
240
Maximum Temperature: Mechanical, °C 990
260
Melting Completion (Liquidus), °C 1420
1180
Melting Onset (Solidus), °C 1380
1120
Specific Heat Capacity, J/kg-K 480
410
Thermal Expansion, µm/m-K 17
15

Otherwise Unclassified Properties

Base Metal Price, % relative 17
40
Density, g/cm3 7.7
8.9
Embodied Carbon, kg CO2/kg material 3.6
5.0
Embodied Energy, MJ/kg 50
73
Embodied Water, L/kg 160
280

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 380
130 to 750
Stiffness to Weight: Axial, points 14
8.7
Stiffness to Weight: Bending, points 25
20
Strength to Weight: Axial, points 25
15 to 20
Strength to Weight: Bending, points 22
16 to 18
Thermal Shock Resistance, points 15
16 to 21

Alloy Composition

Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 17.5 to 22
0
Copper (Cu), % 0
61.7 to 67.8
Iron (Fe), % 57.6 to 67.8
1.7 to 2.3
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 7.5 to 9.0
1.5 to 2.5
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 5.0 to 7.0
29 to 32
Nitrogen (N), % 0.25 to 0.5
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5