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AISI 409 Stainless Steel vs. C71580 Copper-nickel

AISI 409 stainless steel belongs to the iron alloys classification, while C71580 copper-nickel belongs to the copper alloys. There are 29 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 AISI 409 stainless steel and the bottom bar is C71580 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
140
Elongation at Break, % 24
40
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 75
51
Shear Strength, MPa 270
230
Tensile Strength: Ultimate (UTS), MPa 420
330
Tensile Strength: Yield (Proof), MPa 200
110

Thermal Properties

Latent Heat of Fusion, J/g 270
230
Maximum Temperature: Mechanical, °C 710
260
Melting Completion (Liquidus), °C 1450
1180
Melting Onset (Solidus), °C 1400
1120
Specific Heat Capacity, J/kg-K 480
400
Thermal Conductivity, W/m-K 25
39
Thermal Expansion, µm/m-K 11
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
4.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
4.7

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
41
Density, g/cm3 7.7
8.9
Embodied Carbon, kg CO2/kg material 2.0
5.1
Embodied Energy, MJ/kg 28
74
Embodied Water, L/kg 94
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83
100
Resilience: Unit (Modulus of Resilience), kJ/m3 100
47
Stiffness to Weight: Axial, points 14
8.5
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 15
10
Strength to Weight: Bending, points 16
12
Thermal Diffusivity, mm2/s 6.7
11
Thermal Shock Resistance, points 15
11

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.070
Chromium (Cr), % 10.5 to 11.7
0
Copper (Cu), % 0
65.5 to 71
Iron (Fe), % 84.9 to 89.5
0 to 0.5
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 1.0
0 to 0.3
Nickel (Ni), % 0 to 0.5
29 to 33
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0 to 0.75
0
Zinc (Zn), % 0
0 to 0.050
Residuals, % 0
0 to 0.5