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AISI 304 Stainless Steel vs. C72500 Copper-nickel

AISI 304 stainless steel belongs to the iron alloys classification, while C72500 copper-nickel belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is AISI 304 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 77
45
Tensile Strength: Ultimate (UTS), MPa 580 to 1180
420 to 780

Thermal Properties

Latent Heat of Fusion, J/g 290
210
Maximum Temperature: Mechanical, °C 710
210
Melting Completion (Liquidus), °C 1450
1130
Melting Onset (Solidus), °C 1400
1060
Specific Heat Capacity, J/kg-K 480
390
Thermal Conductivity, W/m-K 16
54
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
11
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
11

Otherwise Unclassified Properties

Base Metal Price, % relative 15
35
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 3.0
3.6
Embodied Energy, MJ/kg 43
55
Embodied Water, L/kg 150
320

Common Calculations

Stiffness to Weight: Axial, points 14
7.6
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 21 to 42
13 to 24
Strength to Weight: Bending, points 20 to 32
14 to 21
Thermal Diffusivity, mm2/s 4.2
16
Thermal Shock Resistance, points 12 to 25
14 to 27

Alloy Composition

Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 0
85.2 to 89.7
Iron (Fe), % 66.5 to 74
0 to 0.6
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 2.0
0 to 0.2
Nickel (Ni), % 8.0 to 10.5
8.5 to 10.5
Nitrogen (N), % 0 to 0.1
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
1.8 to 2.8
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.2