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S20432 Stainless Steel vs. C72500 Copper-nickel

S20432 stainless steel belongs to the iron alloys classification, while C72500 copper-nickel belongs to the copper alloys. There are 25 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is S20432 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
Rockwell B Hardness 81
75 to 100
Shear Modulus, GPa 76
45
Tensile Strength: Ultimate (UTS), MPa 580
420 to 780

Thermal Properties

Latent Heat of Fusion, J/g 280
210
Maximum Temperature: Mechanical, °C 900
210
Melting Completion (Liquidus), °C 1410
1130
Melting Onset (Solidus), °C 1370
1060
Specific Heat Capacity, J/kg-K 480
390
Thermal Conductivity, W/m-K 15
54
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
11
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
11

Otherwise Unclassified Properties

Base Metal Price, % relative 13
35
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 2.7
3.6
Embodied Energy, MJ/kg 38
55
Embodied Water, L/kg 140
320

Common Calculations

Stiffness to Weight: Axial, points 14
7.6
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 21
13 to 24
Strength to Weight: Bending, points 20
14 to 21
Thermal Diffusivity, mm2/s 4.0
16
Thermal Shock Resistance, points 13
14 to 27

Alloy Composition

Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 17 to 18
0
Copper (Cu), % 2.0 to 3.0
85.2 to 89.7
Iron (Fe), % 66.7 to 74
0 to 0.6
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 3.0 to 5.0
0 to 0.2
Nickel (Ni), % 4.0 to 6.0
8.5 to 10.5
Nitrogen (N), % 0.050 to 0.2
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
1.8 to 2.8
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.2