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S45500 Stainless Steel vs. C71640 Copper-nickel

S45500 stainless steel belongs to the iron alloys classification, while C71640 copper-nickel belongs to the copper alloys. There are 21 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is S45500 stainless steel and the bottom bar is C71640 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
140
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 75
52
Tensile Strength: Ultimate (UTS), MPa 1370 to 1850
490 to 630
Tensile Strength: Yield (Proof), MPa 1240 to 1700
190 to 460

Thermal Properties

Latent Heat of Fusion, J/g 270
240
Maximum Temperature: Mechanical, °C 760
260
Melting Completion (Liquidus), °C 1440
1180
Melting Onset (Solidus), °C 1400
1120
Specific Heat Capacity, J/kg-K 470
410
Thermal Expansion, µm/m-K 11
15

Otherwise Unclassified Properties

Base Metal Price, % relative 17
40
Density, g/cm3 7.9
8.9
Embodied Carbon, kg CO2/kg material 3.8
5.0
Embodied Energy, MJ/kg 57
73
Embodied Water, L/kg 120
280

Common Calculations

Stiffness to Weight: Axial, points 14
8.7
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 48 to 65
15 to 20
Strength to Weight: Bending, points 35 to 42
16 to 18
Thermal Shock Resistance, points 48 to 64
16 to 21

Alloy Composition

Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 11 to 12.5
0
Copper (Cu), % 1.5 to 2.5
61.7 to 67.8
Iron (Fe), % 71.5 to 79.2
1.7 to 2.3
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 0.5
1.5 to 2.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 7.5 to 9.5
29 to 32
Niobium (Nb), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.030
0
Tantalum (Ta), % 0 to 0.5
0
Titanium (Ti), % 0.8 to 1.4
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5