Regarding welding materials, AWS (American Welding Society) classes guide you to the best and most suitable options available. One notable class is AWS Class ER308/308L SAW & Flux. This type of welding material is widely used in many applications, including aerospace, petrochemical, and food processing industries. This blog post will explore the composition, physical and mechanical properties, uses, heat treatment, and corrosion resistance of AWS Class ER308/308L SAW & Flux.
What is AWS Class ER308/308L SAW & Flux?
AWS Class ER308/308L SAW & Flux combines stainless steel arc welding (SAW) and flux-cored wire to join similar alloys or austenitic steels. Compared to other weld process types, the combination offers superior corrosion resistance to chloride environments, excellent crack resistance, good ductility, and high tensile strength. The SAW process gives the highest deposition rate while producing optimal weld bead characteristics desirable for many engineering applications. The flux core helps reduce hot cracking when working with thicker materials and provides exceptional shallow penetration profiles for thin material sections. In summary, this powerful set of tools offers great control over your welding results!
ER308/308L SAW & Flux Welding Wire Composition
AWS Class ER308/308L SAW & Flux welding alloy is a type of austenitic stainless steel which contains chromium, nickel, and low amounts of carbon. Its high chromium and nickel content offers excellent corrosion resistance, making it ideal for welding applications where resistance to sulphuric, phosphoric, and acetic acids is required.
| C | Cr | Ni | Mo | Mn | Si | P | S | Cu |
| 0.03 | 19.5-22.0 | 9.0-11.0 | 0.75 | 1.0-2.5 | 0.30-0.65 | 0.03 | 0.03 | 0.75 |
ER308/308L SAW & Flux Welding Wire Physical Properties
AWS Class ER308/308L welding electrode has a 7.9 g/cm3 density and a melting point of 1400-1450°C. Its thermal conductivity is 16.2 W/m°C, while its electrical conductivity is 3.05 x 10^6 Siemens/m.
ER308/308L SAW & Flux Welding Wire Mechanical Properties
AWS Class ER308/308L SAW & Flux wire has good impact strength, flexibility, and toughness. It offers a tensile strength of 580 MPa and a yield strength of 420 MPa. The elongation at break is 40%, while the hardness is 95 HRB.
| Yield, kpsi: | 59 |
| Tensile Strength, kpsi: | 88 |
| Elongation%, min: | 39 |
ER308/308L SAW & Flux Welding Wire Trade Names
| Class | UNS | Oxford Alloys |
| ER308/308L | S30883 | Alloy 308/308L |
ER308/308L SAW & Flux Welding Wire Parameters
| Diameter | Process | Volt | Amps/Shielding Gas | |
| in | (mm) | |||
| .023 | (0.6) | GMAW | 14-19 | 30-85/98% Argon/2% Oxygen |
| .030 | (0.8) | GMAW | 15-20 | 45-125/98% Argon/2% Oxygen |
| .035 | (0.9) | GMAW | 16-22 | 60-150/98% Argon/2% Oxygen |
| .045 | (1.14) | GMAW | 17-22 | 90-210/98% Argon/2% Oxygen |
| .035 | (0.9) | GTAW | 12-15 | 60-100/100% Argon |
| .045 | (1.14) | GTAW | 13-16 | 70-120/100% Argon |
| 1/16” | (1.6) | GTAW | 12 | 80-150/100% Argon |
| 3/32” | (2.4) | GTAW | 12 | 150-250/100% Argon |
| 1/8” | (3.2) | GTAW | 12 | 200-375/100% Argon |
ER308/308L SAW & Flux Welding Wire Uses
AWS Class ER308/308L SAW & Flux filler wire is widely used in various applications, including welding thin sections of steel sheets and plates, food processing equipment, and chemical and petrochemical processing plants. It is also used in cryogenic applications as it retains its toughness and strength at extremely low temperatures.
ER308/308L SAW & Flux Welding Wire Heat Treatment
AWS Class ER308/308L SAW & Flux filler metal can be annealed, quenched, or tempered. Annealing at 1010-1120°C followed by quenching in water or rapid-air cooling enhances its corrosion resistance. Tempering at 315-590°C improves its toughness.
ER308/308L SAW & Flux Welding Wire Corrosion Resistant
AWS Class ER308/308L SAW & Flux exhibits excellent resistance to intergranular corrosion, crevice corrosion, and pitting corrosion. It also has good resistance to stress corrosion cracking (SCC) when exposed to hot chloride-containing environments.
Conclusion
In conclusion, AWS Class ER308/308L SAW & Flux is a type of austenitic stainless steel with excellent corrosion resistance, impact strength, flexibility, and toughness. It has uses in various industries, including food processing, petrochemical processing, and aerospace. It can be heat-treated to enhance strength, toughness, and corrosion resistance. If you’re searching for welding material that can withstand corrosive environments, AWS Class ER308/308L SAW & Flux is an excellent choice.
Hey, I’m Krutik, a casual blogger expert in the metal industry. I am passionate about providing valuable information to my readers. With a background in engineering and construction, I like playing Cricket & watching Netflix shows in my free time. Thank you for visiting my blog, and I hope you find my information helpful!
