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C17300 Copper vs. AISI 321 Stainless Steel

C17300 copper belongs to the copper alloys classification, while AISI 321 stainless steel belongs to the iron alloys. There are 28 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 C17300 copper and the bottom bar is AISI 321 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 3.0 to 23
34 to 50
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 45
77
Shear Strength, MPa 320 to 790
420 to 460
Tensile Strength: Ultimate (UTS), MPa 500 to 1380
590 to 690
Tensile Strength: Yield (Proof), MPa 160 to 1200
220 to 350

Thermal Properties

Latent Heat of Fusion, J/g 230
290
Maximum Temperature: Mechanical, °C 270
870
Melting Completion (Liquidus), °C 980
1430
Melting Onset (Solidus), °C 870
1400
Specific Heat Capacity, J/kg-K 380
480
Thermal Conductivity, W/m-K 110
16
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 23
2.7

Otherwise Unclassified Properties

Density, g/cm3 8.8
7.8
Embodied Carbon, kg CO2/kg material 9.4
3.2
Embodied Energy, MJ/kg 150
45
Embodied Water, L/kg 310
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 40 to 88
190 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 5410
130 to 310
Stiffness to Weight: Axial, points 7.6
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 16 to 44
21 to 25
Strength to Weight: Bending, points 16 to 31
20 to 22
Thermal Diffusivity, mm2/s 32
4.1
Thermal Shock Resistance, points 17 to 48
13 to 15

Alloy Composition

Aluminum (Al), % 0 to 0.2
0
Beryllium (Be), % 1.8 to 2.0
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 95.5 to 97.8
0
Iron (Fe), % 0 to 0.4
65.3 to 74
Lead (Pb), % 0.2 to 0.6
0
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0.2 to 0.6
9.0 to 12
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.2
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0
0 to 0.7
Residuals, % 0 to 0.5
0