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CC381H Copper-nickel vs. S21900 Stainless Steel

CC381H copper-nickel belongs to the copper alloys classification, while S21900 stainless steel belongs to the iron alloys. There are 29 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 CC381H copper-nickel and the bottom bar is S21900 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 91
220
Elastic (Young's, Tensile) Modulus, GPa 140
200
Elongation at Break, % 20
50
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 52
78
Tensile Strength: Ultimate (UTS), MPa 380
710
Tensile Strength: Yield (Proof), MPa 140
390

Thermal Properties

Latent Heat of Fusion, J/g 240
290
Maximum Temperature: Mechanical, °C 260
980
Melting Completion (Liquidus), °C 1180
1400
Melting Onset (Solidus), °C 1120
1350
Specific Heat Capacity, J/kg-K 410
480
Thermal Conductivity, W/m-K 30
14
Thermal Expansion, µm/m-K 16
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.8
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 6.9
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 40
15
Density, g/cm3 8.9
7.7
Embodied Carbon, kg CO2/kg material 5.0
3.0
Embodied Energy, MJ/kg 73
43
Embodied Water, L/kg 280
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 60
300
Resilience: Unit (Modulus of Resilience), kJ/m3 68
380
Stiffness to Weight: Axial, points 8.6
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 12
26
Strength to Weight: Bending, points 13
23
Thermal Diffusivity, mm2/s 8.4
3.8
Thermal Shock Resistance, points 13
15

Alloy Composition

Aluminum (Al), % 0 to 0.010
0
Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 0
19 to 21.5
Copper (Cu), % 64.5 to 69.9
0
Iron (Fe), % 0.5 to 1.5
59.4 to 67.4
Lead (Pb), % 0 to 0.030
0
Manganese (Mn), % 0.6 to 1.2
8.0 to 10
Nickel (Ni), % 29 to 31
5.5 to 7.5
Nitrogen (N), % 0
0.15 to 0.4
Phosphorus (P), % 0 to 0.010
0 to 0.045
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Zinc (Zn), % 0 to 0.5
0