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C18400 Copper vs. AISI 442 Stainless Steel

C18400 copper belongs to the copper alloys classification, while AISI 442 stainless steel belongs to the iron alloys. There are 30 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 C18400 copper and the bottom bar is AISI 442 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 13 to 50
23
Poisson's Ratio 0.34
0.27
Rockwell B Hardness 16 to 84
83
Shear Modulus, GPa 44
78
Shear Strength, MPa 190 to 310
370
Tensile Strength: Ultimate (UTS), MPa 270 to 490
580
Tensile Strength: Yield (Proof), MPa 110 to 480
310

Thermal Properties

Latent Heat of Fusion, J/g 210
290
Maximum Temperature: Mechanical, °C 200
960
Melting Completion (Liquidus), °C 1080
1430
Melting Onset (Solidus), °C 1070
1390
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 320
22
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 80
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 81
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 31
10
Density, g/cm3 8.9
7.7
Embodied Carbon, kg CO2/kg material 2.6
2.3
Embodied Energy, MJ/kg 41
32
Embodied Water, L/kg 310
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 63 to 120
110
Resilience: Unit (Modulus of Resilience), kJ/m3 54 to 980
250
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 8.5 to 15
21
Strength to Weight: Bending, points 10 to 16
20
Thermal Diffusivity, mm2/s 94
5.8
Thermal Shock Resistance, points 9.6 to 17
20

Alloy Composition

Arsenic (As), % 0 to 0.0050
0
Calcium (Ca), % 0 to 0.0050
0
Carbon (C), % 0
0 to 0.2
Chromium (Cr), % 0.4 to 1.2
18 to 23
Copper (Cu), % 97.2 to 99.6
0
Iron (Fe), % 0 to 0.15
74.1 to 82
Lithium (Li), % 0 to 0.050
0
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 0.6
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 0.040
Zinc (Zn), % 0 to 0.7
0
Residuals, % 0 to 0.5
0