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AISI 304N Stainless Steel vs. C70700 Copper-nickel

AISI 304N stainless steel belongs to the iron alloys classification, while C70700 copper-nickel belongs to the copper alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is AISI 304N stainless steel and the bottom bar is C70700 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 360
73
Elastic (Young's, Tensile) Modulus, GPa 200
120
Elongation at Break, % 9.1 to 45
39
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 77
46
Shear Strength, MPa 420 to 700
220
Tensile Strength: Ultimate (UTS), MPa 620 to 1180
320
Tensile Strength: Yield (Proof), MPa 270 to 850
110

Thermal Properties

Latent Heat of Fusion, J/g 290
220
Maximum Temperature: Mechanical, °C 960
220
Melting Completion (Liquidus), °C 1420
1120
Melting Onset (Solidus), °C 1380
1060
Specific Heat Capacity, J/kg-K 480
390
Thermal Conductivity, W/m-K 16
59
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
11
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
12

Otherwise Unclassified Properties

Base Metal Price, % relative 15
34
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 3.0
3.4
Embodied Energy, MJ/kg 43
52
Embodied Water, L/kg 150
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 280
100
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 1830
51
Stiffness to Weight: Axial, points 14
7.6
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 22 to 42
10
Strength to Weight: Bending, points 21 to 32
12
Thermal Diffusivity, mm2/s 4.2
17
Thermal Shock Resistance, points 14 to 26
12

Alloy Composition

Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 0
88.5 to 90.5
Iron (Fe), % 66.4 to 73.9
0 to 0.050
Manganese (Mn), % 0 to 2.0
0 to 0.5
Nickel (Ni), % 8.0 to 10.5
9.5 to 10.5
Nitrogen (N), % 0.1 to 0.16
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0
Residuals, % 0
0 to 0.5