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Choosing the right filler material is critical to achieving a strong and reliable welding weld. AWS Class ERTi-5 is a welding material widely used in metal fabrication industries for its exceptional properties. This highly versatile welding material can be used in MIG and TIG welding. In this blog post, we will dive into everything there is to know about AWS Class ERTi-5, including its composition, physical and mechanical properties, heat treatment, corrosion resistance and uses.
What is AWS Class ERTi-5 MIG & TIG?
AWS Class ERTi-5 MIG/TIG welding electrodes are a special type of welding electrodes used for the joining of metals in MAG (Metal Active Gas), TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas) welders. These rods are made from an alloy of titanium and aluminium, which gives them exceptional strength, corrosion resistance, excellent thermal fatigue characteristics and a good weight-to-strength ratio. They provide outstanding arc stability even at low currents, making them suitable for thin sheet metal applications and stainless steel projects. The AWS Class ERTi-5 welding rods will bond most ferrous materials, including Carbon Steel, Low Alloy High Strength Steel and Cast Iron.
AWS Class ERTi-5 MIG & TIG Welding Composition
AWS Class ERTi-5 is a commonly used grade of titanium welding wire. It has a nominal composition of 6% aluminium and 4% vanadium, making it a part of the alpha-beta alloys. Its chemical composition provides it with exceptional strength and resistance to corrosion. The percentage of other impurities is kept low to ensure quality welds.
| C | O | N | H | Fe | AL | V |
| 0.05 | 0.12-0.20 | 0.03 | 0.015 | 0.22 | 5.5-6.75 | 3.5-4.5 |
AWS Class ERTi-5 MIG & TIG Welding Physical Properties
AWS Class ERTi-5 is a non-ferrous metal primarily used to join titanium and titanium alloys. This welding material exhibits excellent mechanical properties, including high tensile strength and low density. It also has a high melting point between 1600°C and 1700°C, making it suitable for high-temperature applications.
AWS Class ERTi-5 MIG & TIG Welding Mechanical Properties
The mechanical properties of the AWS Class ERTi-5 welding wire make it a preferred choice for various industrial applications. Its tensile strength ranges from 830 to 1030 MPa, and its yield strength is between 780 and 930 MPa. The elongation at break ranges between 10% and 18%, while its hardness is between 30 and 35 HB.
| Y.P.N/mm2(ksi) | 827(120) min |
| T.S.N/mm2(ksi) | 896(130 ) min |
| EI.(%) | 10 min |
| I.V.J(kgf-m) | – |
| Y.P.N/mm2(ksi) | 827(120) min |
| T.S.N/mm2(ksi) | 896(130 ) min |
| EI.(%) | 10 min |
| I.V.J(kgf-m) | – |
AWS Class ERTi-5 MIG & TIG Welding Trade Name
| Class | UNS | Oxford Alloys | BOHLER |
| ERTi-5 | R54520 | Alloy Ti-5 | BOHLER ERTi-5 -IG |
AWS Class ERTi-5 MIG & TIG Welding Parameters
| Diameter | Welding Current/Process | Volt | Amps | Shielding Gas | |
| in | (mm) | ||||
| 1/16 | (1.6) | GTAW/DCEN with EWTh-2 truncated conical tip | 9-12 | 100-185 | Argon (cfh) |
| 3/32 | (2.4) | GTAW/DCEN with EWTh-2 truncated conical tip | 11-15 | 150-250 | Argon (cfh) |
| 1/8 | (3.2) | GTAW/DCEN with EWTh-2 truncated conical tip | 11-15 | 200-375 | Argon (cfh) |
| .030 | (0.8) | GMAW/DCEP Short Circuit | 16-20 | 100-195 | Ar&Ar+He (cfh) |
| .035 | (2.4) | GMAW/DCEP Short Circuit | 18-27 | 165-285 | Ar&Ar+He (cfh) |
| .045 | (1.2) | GMAW/DCEP Short Circuit | 31-35 | 250-360 | Ar&Ar+He (cfh) |
AWS Class ERTi-5 MIG & TIG Welding Uses
AWS Class ERTi-5 welding wire is widely used in various industrial applications, including aerospace, chemical processing, marine, and medical industries. It is commonly used to join titanium and titanium alloys due to its excellent mechanical and corrosion-resistant properties. It is also used in the manufacturing of pressure vessels and cryogenic containers.
AWS Class ERTi-5 MIG & TIG Welding Heat Treatment
One of the significant advantages of using AWS Class ERTi-5 welding wire is its ability to withstand high temperatures. However, this welding wire must undergo heat treatment to maintain its mechanical properties. The standard heat treatment involves heating the metal to 950-1000°C for 1 to 4 hours, followed by a water quench.
AWS Class ERTi-5 MIG & TIG Welding Corrosion Resistance
AWS Class ERTi-5 exhibits excellent resistance to corrosion in various chemical environments. This welding wire can withstand corrosive acidic and alkaline environments, including seawater. Its corrosion resistance is due to the high percentage of aluminium and vanadium in its chemical composition, which forms a protective oxide layer on its surface.
Conclusion:
AWS Class ERTi-5 welding wire is an essential material in metal fabrication due to its exceptional strength and corrosion-resistant properties. Its mechanical properties make it a preferred choice for various industrial applications, including aerospace and chemical processing. Its high melting point and corrosion resistance suit high-temperature and corrosive environments. By understanding the composition, physical and mechanical properties, heat treatment, corrosion resistance, and uses of AWS Class ERTi-5, fabricators can make informed decisions about the right welding material to use in a particular application.
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