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C18400 Copper vs. AISI 429 Stainless Steel

C18400 copper belongs to the copper alloys classification, while AISI 429 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is C18400 copper and the bottom bar is AISI 429 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 13 to 50
25
Poisson's Ratio 0.34
0.28
Rockwell B Hardness 16 to 84
78
Shear Modulus, GPa 44
77
Shear Strength, MPa 190 to 310
300
Tensile Strength: Ultimate (UTS), MPa 270 to 490
480
Tensile Strength: Yield (Proof), MPa 110 to 480
260

Thermal Properties

Latent Heat of Fusion, J/g 210
280
Maximum Temperature: Mechanical, °C 200
810
Melting Completion (Liquidus), °C 1080
1440
Melting Onset (Solidus), °C 1070
1400
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 320
26
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 80
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 81
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 31
7.5
Density, g/cm3 8.9
7.7
Embodied Carbon, kg CO2/kg material 2.6
2.0
Embodied Energy, MJ/kg 41
28
Embodied Water, L/kg 310
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 63 to 120
99
Resilience: Unit (Modulus of Resilience), kJ/m3 54 to 980
170
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 8.5 to 15
17
Strength to Weight: Bending, points 10 to 16
18
Thermal Diffusivity, mm2/s 94
6.9
Thermal Shock Resistance, points 9.6 to 17
17

Alloy Composition

Arsenic (As), % 0 to 0.0050
0
Calcium (Ca), % 0 to 0.0050
0
Carbon (C), % 0
0 to 0.12
Chromium (Cr), % 0.4 to 1.2
14 to 16
Copper (Cu), % 97.2 to 99.6
0
Iron (Fe), % 0 to 0.15
81.8 to 86
Lithium (Li), % 0 to 0.050
0
Manganese (Mn), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.050
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.7
0
Residuals, % 0 to 0.5
0