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ASTM A387 Grade 91 Class 2 vs. CC381H Copper-nickel

ASTM A387 grade 91 class 2 belongs to the iron alloys classification, while CC381H copper-nickel belongs to the copper alloys. There are 29 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 ASTM A387 grade 91 class 2 and the bottom bar is CC381H copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
91
Elastic (Young's, Tensile) Modulus, GPa 190
140
Elongation at Break, % 20
20
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 75
52
Tensile Strength: Ultimate (UTS), MPa 670
380
Tensile Strength: Yield (Proof), MPa 470
140

Thermal Properties

Latent Heat of Fusion, J/g 270
240
Maximum Temperature: Mechanical, °C 600
260
Melting Completion (Liquidus), °C 1460
1180
Melting Onset (Solidus), °C 1420
1120
Specific Heat Capacity, J/kg-K 470
410
Thermal Conductivity, W/m-K 26
30
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
6.8
Electrical Conductivity: Equal Weight (Specific), % IACS 10
6.9

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
40
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 2.6
5.0
Embodied Energy, MJ/kg 37
73
Embodied Water, L/kg 88
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
60
Resilience: Unit (Modulus of Resilience), kJ/m3 580
68
Stiffness to Weight: Axial, points 14
8.6
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 24
12
Strength to Weight: Bending, points 22
13
Thermal Diffusivity, mm2/s 6.9
8.4
Thermal Shock Resistance, points 19
13

Alloy Composition

Aluminum (Al), % 0 to 0.020
0 to 0.010
Carbon (C), % 0.080 to 0.12
0 to 0.030
Chromium (Cr), % 8.0 to 9.5
0
Copper (Cu), % 0
64.5 to 69.9
Iron (Fe), % 87.3 to 90.3
0.5 to 1.5
Lead (Pb), % 0
0 to 0.030
Manganese (Mn), % 0.3 to 0.6
0.6 to 1.2
Molybdenum (Mo), % 0.85 to 1.1
0
Nickel (Ni), % 0 to 0.4
29 to 31
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.020
0 to 0.010
Silicon (Si), % 0.2 to 0.5
0 to 0.1
Sulfur (S), % 0 to 0.010
0 to 0.010
Titanium (Ti), % 0 to 0.010
0
Vanadium (V), % 0.18 to 0.25
0
Zinc (Zn), % 0
0 to 0.5
Zirconium (Zr), % 0 to 0.010
0