ThePipingMart Blog Welding Electrodes AWS Class ER308/308H SAW & Flux Welding Wire – Composition, Properties, and Uses

AWS Class ER308/308H SAW & Flux Welding Wire – Composition, Properties, and Uses

AWS Class ER308/308H SAW & Flux

AWS Class ER308/308H is a popular welding filler material used in several industries. It is widely used to join different types of stainless steel alloys together. Besides, the flux used in welding plays a crucial role in determining the overall quality of the weld. This blog will investigate the AWS Class ER308/308H SAW & Flux welding material. We will discuss its composition, physical and mechanical properties. Moreover, we will also shed light on its uses, heat treatment, and corrosion-resistant attributes. So, let’s get started!

What is AWS Class ER308/308H SAW & Flux?

AWS Class ER308/308H is a Stainless Steel flux cored wire used for welding similar-type stainless steels (300 series) in all positions. This type of SAW & Flux has an outer sheath made from 308 alloys and a core composed of 308H filler metal. It produces welds with excellent strength, corrosion resistance, impact toughness, and ductility properties. Its low carbon content makes it suitable for applications where precipitation hardening should be avoided. As it can be operated in AC or DC current types, this class allows you to accomplish your welding projects easily and precisely!

ER308/308H SAW & Flux Coated Wire Composition

AWS Class ER308/308H SAW & Flux welding alloy contains a balanced nickel, chromium, and molybdenum composition. Furthermore, it has low carbon content. The flux composition determines the final welded product’s mechanical and physical properties. Generally, the flux comprises a mixture of deoxidizing and alloy-based materials that enhance the longevity of the weld metal.

C Mn Si Cr Ni S P Mo Cu
0.04-0.08 1.0-2.5 0.30-0.65 19.5-22.0 9.0-11.0 0.03 0.03 0.50 0.75

ER308/308H SAW & Flux Coated Wire Physical Properties

AWS Class ER308/308H SAW & Flux welding wire is known for its excellent resistance to oxidizing agents. It is highly tensile and has a high melting point. Depending on the welding process and flux composition, the final product can have varying density, colour, and porosity.

ER308/308H SAW & Flux Welding Wire Mechanical Properties

AWS Class ER308/308H SAW & Flux electrode combines strength, ductility, and corrosion resistance. It is suitable for welding, including thin sheets, pipes, and flat plates. Generally, AWS Class ER308/308H SAW & Flux produces welds with high strength and toughness attributes, making them suitable for heavy-duty industrial applications.

Tensile Strength 86,500 psi
Yield Strength 57,500 psi
Elongation (%) 39%

ER308/308H SAW & Flux Coated Wire Trade Names

Class UNS Oxford Alloys
ER308/308H S30880 Alloy 308/308H

ER308/308H SAW & Flux Welding Wire Parameters

Diameter Amperage Volts Shielding Gas
  GTAW 1/16” 80-110   100% Ar
3/32” 90-130
1/8” 120-175
5/32” 150-220
  GMAW
Spray Transfer
.030” 130-200 23-27   98% Ar/ 2% O2
(35 cfh)
.035” 150-225 23-26
.045” 200-325 24-28
1/16” 300-350 24-27
  GMAW
Short-Circuit
.030” 50-150 14-20   90% He/ 7½% Ar/ 2½% CO2 (25 cfh)
.035” 60-200 14-22
.045” 75-225 15-23
1/16” 100-250 16-23
SAW 3/32” 275-350 28-30 Suitable Flux
1/8” 350-450 29-32

ER308/308H SAW & Flux Coated Wire Uses

AWS Class ER308/308H SAW & Flux filler wire is used in several industries that utilize stainless steel alloys. It is commonly used in food processing and pharmaceutical industries, where resistance to corrosion and hygiene are paramount. Furthermore, it is widely used in chemical processing, oil, and gas equipment. In addition, it is used in welding sheet metals, wire products, tubing, and piping systems.

ER308/308H SAW & Flux Welding Wire Heat Treatment and Corrosion Resistance

AWS Class ER308/308H SAW & Flux filler metal is heat-treatable, which means it can be strengthened by heating it to a certain temperature and then cooling it slowly. Moreover, AWS Class ER308/308H SAW & Flux is corrosion resistant, making it suitable for use in environments exposed to corrosive substances such as acids and salts.

Conclusion

AWS Class ER308/308H SAW & Flux welding material is highly versatile and widely used in industrial applications. It boasts superior physical and mechanical properties, including excellent resistance to corrosion and heat. AWS Class ER308/308H SAW & Flux can be used to weld various types of stainless steel alloys, and it has been found to produce highly reliable and strong welds in different forms and shapes if you want a welding material that will give long-lasting results, consider using AWS Class ER308/308H SAW & Flux.

Related Post