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S20910 Stainless Steel vs. C72500 Copper-nickel

S20910 stainless steel belongs to the iron alloys classification, while C72500 copper-nickel belongs to the copper alloys. There are 22 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 S20910 stainless steel and the bottom bar is C72500 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 79
45
Tensile Strength: Ultimate (UTS), MPa 780 to 940
420 to 780

Thermal Properties

Latent Heat of Fusion, J/g 300
210
Maximum Temperature: Mechanical, °C 1080
210
Melting Completion (Liquidus), °C 1420
1130
Melting Onset (Solidus), °C 1380
1060
Specific Heat Capacity, J/kg-K 480
390
Thermal Conductivity, W/m-K 13
54
Thermal Expansion, µm/m-K 16
17

Otherwise Unclassified Properties

Base Metal Price, % relative 22
35
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 4.8
3.6
Embodied Energy, MJ/kg 68
55
Embodied Water, L/kg 180
320

Common Calculations

Stiffness to Weight: Axial, points 14
7.6
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 28 to 33
13 to 24
Strength to Weight: Bending, points 24 to 27
14 to 21
Thermal Diffusivity, mm2/s 3.6
16
Thermal Shock Resistance, points 17 to 21
14 to 27

Alloy Composition

Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 20.5 to 23.5
0
Copper (Cu), % 0
85.2 to 89.7
Iron (Fe), % 52.1 to 62.1
0 to 0.6
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 4.0 to 6.0
0 to 0.2
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
8.5 to 10.5
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
1.8 to 2.8
Vanadium (V), % 0.1 to 0.3
0
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.2