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ASTM B817 Type II vs. C72900 Copper-nickel

ASTM B817 type II belongs to the titanium alloys classification, while C72900 copper-nickel belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ASTM B817 type II and the bottom bar is C72900 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
120
Elongation at Break, % 3.0 to 13
6.0 to 20
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 40
45
Tensile Strength: Ultimate (UTS), MPa 900 to 960
870 to 1080
Tensile Strength: Yield (Proof), MPa 780 to 900
700 to 920

Thermal Properties

Latent Heat of Fusion, J/g 400
210
Maximum Temperature: Mechanical, °C 350
210
Melting Completion (Liquidus), °C 1580
1120
Melting Onset (Solidus), °C 1530
950
Specific Heat Capacity, J/kg-K 550
380
Thermal Expansion, µm/m-K 9.9
17

Otherwise Unclassified Properties

Base Metal Price, % relative 37
39
Density, g/cm3 4.6
8.8
Embodied Carbon, kg CO2/kg material 40
4.6
Embodied Energy, MJ/kg 650
72
Embodied Water, L/kg 220
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 26 to 120
49 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 2890 to 3890
2030 to 3490
Stiffness to Weight: Axial, points 13
7.6
Stiffness to Weight: Bending, points 34
19
Strength to Weight: Axial, points 55 to 58
27 to 34
Strength to Weight: Bending, points 45 to 47
23 to 27
Thermal Shock Resistance, points 62 to 66
31 to 38

Alloy Composition

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
74.1 to 78
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0.35 to 1.0
0 to 0.5
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 0
0 to 0.3
Nickel (Ni), % 0
14.5 to 15.5
Niobium (Nb), % 0
0 to 0.1
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
7.5 to 8.5
Titanium (Ti), % 82.1 to 87.8
0
Vanadium (V), % 5.0 to 6.0
0
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0 to 0.4
0 to 0.3