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AISI 439 Stainless Steel vs. C82700 Copper

AISI 439 stainless steel belongs to the iron alloys classification, while C82700 copper belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is AISI 439 stainless steel and the bottom bar is C82700 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Elongation at Break, % 23
1.8
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
46
Tensile Strength: Ultimate (UTS), MPa 490
1200
Tensile Strength: Yield (Proof), MPa 250
1020

Thermal Properties

Latent Heat of Fusion, J/g 280
240
Maximum Temperature: Mechanical, °C 890
300
Melting Completion (Liquidus), °C 1510
950
Melting Onset (Solidus), °C 1430
860
Specific Heat Capacity, J/kg-K 480
380
Thermal Conductivity, W/m-K 25
130
Thermal Expansion, µm/m-K 11
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
20
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
21

Otherwise Unclassified Properties

Density, g/cm3 7.7
8.7
Embodied Carbon, kg CO2/kg material 2.3
12
Embodied Energy, MJ/kg 34
180
Embodied Water, L/kg 120
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
21
Resilience: Unit (Modulus of Resilience), kJ/m3 160
4260
Stiffness to Weight: Axial, points 14
7.8
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 18
38
Strength to Weight: Bending, points 18
29
Thermal Diffusivity, mm2/s 6.7
39
Thermal Shock Resistance, points 16
41

Alloy Composition

Aluminum (Al), % 0 to 0.15
0 to 0.15
Beryllium (Be), % 0
2.4 to 2.6
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 17 to 19
0 to 0.090
Copper (Cu), % 0
94.6 to 96.7
Iron (Fe), % 77.1 to 82.8
0 to 0.25
Lead (Pb), % 0
0 to 0.020
Manganese (Mn), % 0 to 1.0
0
Nickel (Ni), % 0 to 0.5
1.0 to 1.5
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.15
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0.2 to 1.1
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.5