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AWS ERTi-7 vs. Grade 702C Zirconium

AWS ERTi-7 belongs to the titanium alloys classification, while grade 702C zirconium belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is AWS ERTi-7 and the bottom bar is grade 702C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
97
Elongation at Break, % 20
13
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 40
36
Tensile Strength: Ultimate (UTS), MPa 340
430
Tensile Strength: Yield (Proof), MPa 280
310

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Specific Heat Capacity, J/kg-K 540
270
Thermal Conductivity, W/m-K 21
22
Thermal Expansion, µm/m-K 8.7
5.7

Otherwise Unclassified Properties

Density, g/cm3 4.5
6.7
Embodied Water, L/kg 470
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
52
Resilience: Unit (Modulus of Resilience), kJ/m3 360
510
Stiffness to Weight: Axial, points 13
8.1
Stiffness to Weight: Bending, points 35
23
Strength to Weight: Axial, points 21
18
Strength to Weight: Bending, points 24
19
Thermal Diffusivity, mm2/s 8.8
12
Thermal Shock Resistance, points 26
55

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.1
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0 to 0.0080
0 to 0.0050
Iron (Fe), % 0 to 0.12
0 to 0.3
Nitrogen (N), % 0 to 0.015
0 to 0.030
Oxygen (O), % 0.080 to 0.16
0 to 0.25
Palladium (Pd), % 0.12 to 0.25
0
Phosphorus (P), % 0
0 to 0.010
Titanium (Ti), % 99.417 to 99.8
0
Zirconium (Zr), % 0
94.8 to 100