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AWS ERTi-7 vs. C72700 Copper-nickel

AWS ERTi-7 belongs to the titanium alloys classification, while C72700 copper-nickel belongs to the copper alloys. There are 27 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 AWS ERTi-7 and the bottom bar is C72700 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Elongation at Break, % 20
4.0 to 36
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 40
44
Tensile Strength: Ultimate (UTS), MPa 340
460 to 1070
Tensile Strength: Yield (Proof), MPa 280
580 to 1060

Thermal Properties

Latent Heat of Fusion, J/g 420
210
Maximum Temperature: Mechanical, °C 320
200
Melting Completion (Liquidus), °C 1670
1100
Melting Onset (Solidus), °C 1620
930
Specific Heat Capacity, J/kg-K 540
380
Thermal Conductivity, W/m-K 21
54
Thermal Expansion, µm/m-K 8.7
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
11
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
11

Otherwise Unclassified Properties

Density, g/cm3 4.5
8.8
Embodied Carbon, kg CO2/kg material 47
4.0
Embodied Energy, MJ/kg 800
62
Embodied Water, L/kg 470
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
20 to 380
Resilience: Unit (Modulus of Resilience), kJ/m3 360
1420 to 4770
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 35
19
Strength to Weight: Axial, points 21
14 to 34
Strength to Weight: Bending, points 24
15 to 26
Thermal Diffusivity, mm2/s 8.8
16
Thermal Shock Resistance, points 26
16 to 38

Alloy Composition

Carbon (C), % 0 to 0.030
0
Copper (Cu), % 0
82.1 to 86
Hydrogen (H), % 0 to 0.0080
0
Iron (Fe), % 0 to 0.12
0 to 0.5
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 0
0.050 to 0.3
Nickel (Ni), % 0
8.5 to 9.5
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0 to 0.015
0
Oxygen (O), % 0.080 to 0.16
0
Palladium (Pd), % 0.12 to 0.25
0
Tin (Sn), % 0
5.5 to 6.5
Titanium (Ti), % 99.417 to 99.8
0
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.3