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AISI 304N Stainless Steel vs. C72900 Copper-nickel

AISI 304N stainless steel belongs to the iron alloys classification, while C72900 copper-nickel belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AISI 304N stainless steel and the bottom bar is C72900 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Elongation at Break, % 9.1 to 45
6.0 to 20
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 77
45
Shear Strength, MPa 420 to 700
540 to 630
Tensile Strength: Ultimate (UTS), MPa 620 to 1180
870 to 1080
Tensile Strength: Yield (Proof), MPa 270 to 850
700 to 920

Thermal Properties

Latent Heat of Fusion, J/g 290
210
Maximum Temperature: Mechanical, °C 960
210
Melting Completion (Liquidus), °C 1420
1120
Melting Onset (Solidus), °C 1380
950
Specific Heat Capacity, J/kg-K 480
380
Thermal Conductivity, W/m-K 16
29
Thermal Expansion, µm/m-K 16
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 15
39
Density, g/cm3 7.8
8.8
Embodied Carbon, kg CO2/kg material 3.0
4.6
Embodied Energy, MJ/kg 43
72
Embodied Water, L/kg 150
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 280
49 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 1830
2030 to 3490
Stiffness to Weight: Axial, points 14
7.6
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 22 to 42
27 to 34
Strength to Weight: Bending, points 21 to 32
23 to 27
Thermal Diffusivity, mm2/s 4.2
8.6
Thermal Shock Resistance, points 14 to 26
31 to 38

Alloy Composition

Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 0
74.1 to 78
Iron (Fe), % 66.4 to 73.9
0 to 0.5
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 0 to 2.0
0 to 0.3
Nickel (Ni), % 8.0 to 10.5
14.5 to 15.5
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0.1 to 0.16
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
7.5 to 8.5
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.3