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AWS Class ERTI-12 MIG & TIG Welding Wire – Composition, Properties, and Uses

AWS Class ERTI-12 MIG & TIG

As the welding industry continues to evolve and improve, new materials and techniques are being used. One such material is AWS Class ERTI-12, a type of titanium alloy that can be used for MIG (Metal Inert Gas) and TIG (Tungsten Inert Gas) welding. This comprehensive guide will break down AWS Class ERTI-12 and explore its composition, mechanical and physical properties, uses, and more.

What is AWS Class ERTI-12 MIG & TIG?

AWS Class ERTI-12 MIG & TIG is a titanium alloy used in welding applications. It also has a high tensile strength of 1,250 MPa and an ultimate strength of 1,500 MPa. This makes it suitable for components subjected to highly elevated temperatures over long periods, including aircraft components, chemical industry vessels, and nuclear power containers. It is also corrosion resistant even in acidic environments, making it ideal for fuel tanks and other similar products that need to combat environmental degradation with minimal maintenance costs.

ERTI-12 MIG & TIG Welding Wire Composition

AWS Class ERTI-12 welding wire is a titanium alloy that contains 0.3% molybdenum and 0.8% nickel. The metal alloy includes 6% aluminium, 4% vanadium, and 0.2% iron. It also has smaller amounts of iron, carbon, and oxygen. This alloy is designed for high-stress applications, such as aerospace and marine industries.

ERTi N C H Fe O Al V Pd Mo Ni Ti
12 0.03 0.08 0.015 0.30 0.25 / / / 0.2~0.4 0.6~0.9 bal

ERTI-12 MIG & TIG Coated Wire Mechanical Properties

The mechanical properties of AWS Class ERTI-12 filler metal are impressive. It has a tensile strength of 125 ksi and a yield strength of 110 ksi. It also has a low modulus of elasticity, making it an ideal choice for flexible applications.

AWS
Clas sif ic at ion

T ens ile St re ngt h(m in)

Y eild  St rengt h(m in)

Elonga tion( % )

ks i

M Pa

ks i

MP a

E RTi- 12

7 0

4 83

5 0

34 5

18

ERTI-12 MIG & TIG Welding Wire Physical Properties

AWS Class ERTI-12 welding alloy has a density of 0.163 lb/in^3 and a melting point of 3200°F. It also has a thermal conductivity of 9.1 Btu/hr-ft-°F and a coefficient of thermal expansion of 5.5 x 10^-6 in/in/°F. These physical properties make it a popular choice in industries that require high strength and corrosion resistance.

ERTI-12 MIG & TIG Coated Wire Trade Name

Class UNS
ERTI-12 R53400

ERTI-12 MIG & TIG Coated Wire Parameters

ERTi Tensile strength(min) Yield strength(min) Elongation(%)
ksi M Pa ksi M Pa
12 70 438 50 345 18

ERTI-12 MIG & TIG Welding Wire Uses

AWS Class ERTI-12 welding electrode  is commonly used in aerospace and marine applications, as well as in medical implants and equipment. It’s also used in chemical processing equipment and power generation equipment. The combination of high strength, low modulus of elasticity, and corrosion resistance make it an ideal choice for these applications.

ERTI-12 MIG & TIG Coated Wire Corrosion Resistance

One key benefit of AWS Class ERTI-12 is its corrosion resistance. It’s resistant to a variety of chemicals, including chlorides and sulfides. This makes it ideal for marine applications exposed to saltwater and other corrosive elements.

ERTI-12 MIG & TIG Welding Wire Heat Treatment

AWS Class ERTI-12 filler wire can be heat treated to improve its strength and toughness. This can be done by annealing, ageing, or stress relieving. Annealing is done by heating the metal to a specific temperature and then slowly cooling it. Ageing involves heating the metal to a specific temperature and holding it there for a specific time. Stress relieving involves heating the metal to a specific temperature and slowly cooling it to relieve internal stresses.

Conclusion

AWS Class ERTI-12 is a versatile titanium alloy with impressive mechanical and physical properties. Its high strength, low modulus of elasticity, and corrosion resistance make it an ideal choice for aerospace, marine, and medical applications. Like other titanium alloys, it can be heat treated to further improve its properties. If you’re looking for a high-performing material for your welding projects, AWS Class ERTI-12 is a solid choice.

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