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EN 1.4951 Stainless Steel vs. CC381H Copper-nickel

EN 1.4951 stainless steel belongs to the iron alloys classification, while CC381H copper-nickel belongs to the copper alloys. They have a modest 22% of their average alloy composition in common, which, by itself, doesn't mean much. 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 EN 1.4951 stainless steel and the bottom bar is CC381H copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
91
Elastic (Young's, Tensile) Modulus, GPa 200
140
Elongation at Break, % 38
20
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 79
52
Tensile Strength: Ultimate (UTS), MPa 630
380
Tensile Strength: Yield (Proof), MPa 220
140

Thermal Properties

Latent Heat of Fusion, J/g 300
240
Maximum Temperature: Mechanical, °C 1100
260
Melting Completion (Liquidus), °C 1410
1180
Melting Onset (Solidus), °C 1360
1120
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 15
30
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
6.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
6.9

Otherwise Unclassified Properties

Base Metal Price, % relative 25
40
Density, g/cm3 7.9
8.9
Embodied Carbon, kg CO2/kg material 4.3
5.0
Embodied Energy, MJ/kg 61
73
Embodied Water, L/kg 190
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
60
Resilience: Unit (Modulus of Resilience), kJ/m3 130
68
Stiffness to Weight: Axial, points 14
8.6
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 22
12
Strength to Weight: Bending, points 21
13
Thermal Diffusivity, mm2/s 3.9
8.4
Thermal Shock Resistance, points 14
13

Alloy Composition

Aluminum (Al), % 0
0 to 0.010
Carbon (C), % 0.040 to 0.080
0 to 0.030
Chromium (Cr), % 24 to 26
0
Copper (Cu), % 0
64.5 to 69.9
Iron (Fe), % 49.1 to 57
0.5 to 1.5
Lead (Pb), % 0
0 to 0.030
Manganese (Mn), % 0 to 2.0
0.6 to 1.2
Nickel (Ni), % 19 to 22
29 to 31
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.035
0 to 0.010
Silicon (Si), % 0 to 0.7
0 to 0.1
Sulfur (S), % 0 to 0.015
0 to 0.010
Zinc (Zn), % 0
0 to 0.5