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AWS ERTi-1 Weld Metal

AWS ERTi-1 is a titanium-based filler metal for welding. Cited properties are appropriate for the as-welded condition. It has the lowest tensile strength among titanium alloys. In addition, it has a very high ductility and a fairly high melting temperature.

The graph bars on the material properties cards below compare AWS ERTi-1 to: titanium welding fillers (top), all titanium alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Elastic (Young's, Tensile) Modulus

110 GPa 16 x 106 psi

Elongation at Break

24 %

Fatigue Strength

120 MPa 18 x 103 psi

Poisson's Ratio


Shear Modulus

41 GPa 5.9 x 106 psi

Tensile Strength: Ultimate (UTS)

240 MPa 35 x 103 psi

Tensile Strength: Yield (Proof)

170 MPa 25 x 103 psi

Thermal Properties

Latent Heat of Fusion

420 J/g

Maximum Temperature: Mechanical

320 °C 600 °F

Melting Completion (Liquidus)

1670 °C 3030 °F

Melting Onset (Solidus)

1620 °C 2940 °F

Specific Heat Capacity

540 J/kg-K 0.13 BTU/lb-°F

Thermal Conductivity

21 W/m-K 12 BTU/h-ft-°F

Thermal Expansion

8.7 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

3.6 % IACS

Electrical Conductivity: Equal Weight (Specific)

7.1 % IACS

Otherwise Unclassified Properties

Base Metal Price

37 % relative


4.5 g/cm3 280 lb/ft3

Embodied Carbon

31 kg CO2/kg material

Embodied Energy

510 MJ/kg 220 x 103 BTU/lb

Embodied Water

110 L/kg 13 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

52 MJ/m3

Resilience: Unit (Modulus of Resilience)

140 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

35 points

Strength to Weight: Axial

15 points

Strength to Weight: Bending

19 points

Thermal Diffusivity

8.7 mm2/s

Thermal Shock Resistance

19 points

Alloy Composition

Titanium (Ti)Ti 99.773 to 99.97
Oxygen (O)O 0.030 to 0.1
Iron (Fe)Fe 0 to 0.080
Carbon (C)C 0 to 0.030
Nitrogen (N)N 0 to 0.012
Hydrogen (H)H 0 to 0.0050

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys

Further Reading

AWS A5.16: Specification for Titanium and Titanium-Alloy Welding Electrodes and Rods