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C18700 Copper vs. AISI 403 Stainless Steel

C18700 copper belongs to the copper alloys classification, while AISI 403 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is C18700 copper and the bottom bar is AISI 403 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 9.0 to 9.6
16 to 25
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 43
76
Shear Strength, MPa 170 to 190
340 to 480
Tensile Strength: Ultimate (UTS), MPa 290 to 330
530 to 780
Tensile Strength: Yield (Proof), MPa 230 to 250
280 to 570

Thermal Properties

Latent Heat of Fusion, J/g 210
270
Maximum Temperature: Mechanical, °C 200
740
Melting Completion (Liquidus), °C 1080
1450
Melting Onset (Solidus), °C 950
1400
Specific Heat Capacity, J/kg-K 380
480
Thermal Conductivity, W/m-K 380
28
Thermal Expansion, µm/m-K 17
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 99
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 30
6.5
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 2.6
1.9
Embodied Energy, MJ/kg 41
27
Embodied Water, L/kg 310
99

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 29
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 280
210 to 840
Stiffness to Weight: Axial, points 7.1
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 9.0 to 10
19 to 28
Strength to Weight: Bending, points 11 to 12
19 to 24
Thermal Diffusivity, mm2/s 110
7.6
Thermal Shock Resistance, points 10 to 12
20 to 29

Alloy Composition

Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
11.5 to 13
Copper (Cu), % 98 to 99.2
0
Iron (Fe), % 0
84.7 to 88.5
Lead (Pb), % 0.8 to 1.5
0
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 0.6
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Residuals, % 0 to 0.5
0