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ASTM B817 Type II vs. C71640 Copper-nickel

ASTM B817 type II belongs to the titanium alloys classification, while C71640 copper-nickel belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ASTM B817 type II and the bottom bar is C71640 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
140
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 40
52
Tensile Strength: Ultimate (UTS), MPa 900 to 960
490 to 630
Tensile Strength: Yield (Proof), MPa 780 to 900
190 to 460

Thermal Properties

Latent Heat of Fusion, J/g 400
240
Maximum Temperature: Mechanical, °C 350
260
Melting Completion (Liquidus), °C 1580
1180
Melting Onset (Solidus), °C 1530
1120
Specific Heat Capacity, J/kg-K 550
410
Thermal Expansion, µm/m-K 9.9
15

Otherwise Unclassified Properties

Base Metal Price, % relative 37
40
Density, g/cm3 4.6
8.9
Embodied Carbon, kg CO2/kg material 40
5.0
Embodied Energy, MJ/kg 650
73
Embodied Water, L/kg 220
280

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 2890 to 3890
130 to 750
Stiffness to Weight: Axial, points 13
8.7
Stiffness to Weight: Bending, points 34
20
Strength to Weight: Axial, points 55 to 58
15 to 20
Strength to Weight: Bending, points 45 to 47
16 to 18
Thermal Shock Resistance, points 62 to 66
16 to 21

Alloy Composition


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Aluminum (Al), % 5.0 to 6.0
0
Carbon (C), % 0 to 0.1
0
Chlorine (Cl), % 0 to 0.2
0
Copper (Cu), % 0.35 to 1.0
61.7 to 67.8
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0.35 to 1.0
1.7 to 2.3
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0
1.5 to 2.5
Nickel (Ni), % 0
29 to 32
Nitrogen (N), % 0 to 0.040
0
Oxygen (O), % 0 to 0.3
0
Silicon (Si), % 0 to 0.1
0
Sodium (Na), % 0 to 0.2
0
Tin (Sn), % 1.5 to 2.5
0
Titanium (Ti), % 82.1 to 87.8
0
Vanadium (V), % 5.0 to 6.0
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0 to 0.4
0 to 0.5