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AWS ERTi-7 vs. AWS E330

AWS ERTi-7 belongs to the titanium alloys classification, while AWS E330 belongs to the iron alloys. There are 23 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 AWS ERTi-7 and the bottom bar is AWS E330.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 20
29
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
76
Tensile Strength: Ultimate (UTS), MPa 340
580

Thermal Properties

Latent Heat of Fusion, J/g 420
300
Melting Completion (Liquidus), °C 1670
1400
Melting Onset (Solidus), °C 1620
1350
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
12
Thermal Expansion, µm/m-K 8.7
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
1.9

Otherwise Unclassified Properties

Density, g/cm3 4.5
8.1
Embodied Carbon, kg CO2/kg material 47
5.4
Embodied Energy, MJ/kg 800
75
Embodied Water, L/kg 470
180

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 21
20
Strength to Weight: Bending, points 24
19
Thermal Diffusivity, mm2/s 8.8
3.2
Thermal Shock Resistance, points 26
16

Alloy Composition

Carbon (C), % 0 to 0.030
0.18 to 0.25
Chromium (Cr), % 0
14 to 17
Copper (Cu), % 0
0 to 0.75
Hydrogen (H), % 0 to 0.0080
0
Iron (Fe), % 0 to 0.12
40.7 to 51.8
Manganese (Mn), % 0
1.0 to 2.5
Molybdenum (Mo), % 0
0 to 0.75
Nickel (Ni), % 0
33 to 37
Nitrogen (N), % 0 to 0.015
0
Oxygen (O), % 0.080 to 0.16
0
Palladium (Pd), % 0.12 to 0.25
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 99.417 to 99.8
0