- All
- Product Name
- Product Keyword
- Product Model
- Product Summary
- Product Description
- Multi Field Search
AWS A5.9 ER309L
1kg,5kg,15kg,20kg
1lb;2lb;4.5lb;11lb;15lb;20lb;33lb;44lb
0.6mm;0.8mm;0.9mm;1.0mm;1.2mm;1.6;2.0mm
0.023;0.030in;0.035in;3/64″;0.045;1/16″;5/64″
1.6mm,2.0mm,2.4mm,3.2mm,4.0mm,5.0mm
1/16 ″in;5/64″in;3/32″in;1/8″in;5/32″inch
D100,D200,D270,D300,BS300,K300
Acceptable (design the pack with your logo)
15 Days
Product Description
1）Classification: This is an American Welding Society (AWS) standard for a bare stainless steel filler metal, identified by its low-carbon, high-alloy composition.
2）Composition: The "ER309L" classification denotes a high-alloy content with a nominal composition of 23-25% chromium and 12-14% nickel, with the "L" signifying a low carbon content (0.03% max).
3）Application: Its primary use is for welding dissimilar metals, such as joining austenitic stainless steels to carbon or low-alloy steels.
4）Properties: The low carbon content is critical, as it provides a superior resistance to intergranular corrosion or weld decay, making it suitable for applications where the welded part is heat-treated or exposed to corrosive environments.
5）Versatility: This wire is also an excellent choice for a "buttering" or cladding layer on carbon steel to provide a corrosion-resistant surface before a final stainless steel overlay is applied.
6）Welding Processes: It is a highly versatile consumable used in various welding methods, including Gas Metal Arc Welding (GMAW/MIG) and Gas Tungsten Arc Welding (GTAW/TIG).
AWS A5.9 ER309L Stainless Steel Welding Wire.pdf
Standard： AWS A 5.9 YB/T5092 | Chemical Composition % | |||||||||||||
C | Mn | Si | Cr | Ni | P | S | Mo | Cu | ||||||
Grade ER309L | ≤0.03 | 1.0 – 2.5 | 0.3 – 0.65 | 23 – 25 | 12 – 14 | ≤0.03 | ≤0.03 | ≤0.75 | ≤0.75 | |||||
Type | Spool (MIG) | Tube (TIG) | ||||||||||||
Specification ( MM ) | 0.8、0.9、1.0、1.2、1.6、2.0 | 1.6、2.0、2.4、3.2、4.0、5.0 | ||||||||||||
Package | S100/1kg S200/5kg S270,S300/15kg-20kg | 5kg/box 10kg/box length :1000MM | ||||||||||||
Mechanical Properties | Tensile Strength Mpa | Elongation after fracture A（%） | ||||||||||||
≥ 520 | ≥ 30 | |||||||||||||
Diameter（MM） | 0.8 | 1.0 | 1.2 | 1.6 | 2.0 | 2.5 | 3.2 | |||||||
Current （A） | 70 ~ 150 | 100 ~ 200 | 140 ~ 220 | 50 ~ 100 | 100 ~ 200 | 200 ~ 300 | 300 ~ 400 | |||||||
AWS A5.9 ER309L Stainless Steel Welding Wire Parameters
| Diameter | Process | ||
| in | mm | ||
| 0.03 | 0.8 | GMAW | |
| 0.035 | 0.9 | GMAW | |
| 0.039 | 1.0 | GMAW | |
| 1/25.4” | |||
| 0.045 | 1.2 | GMAW | |
| 3/64” | |||
| 1/16” | 1.6 | GMAW | |
| 3/32” | 2.4 | GMAW | |
| Diameter | Process | ||
| in | mm | ||
| 1/16” | 1.6 | GTAW | |
| 3/32” | 2.4 | GTAW | |
| 1/8” | 3.2 | GTAW | |
| 5/32” | 4.0 | GTAW | |
| 3/16” | 4.8 | GTAW | |
| Weight | 0.5kg | 1kg | 2kg | 5kg | 15kg | 20kg | |||||
| 1 lb | 2 lb | 4 lb | 11 lb | 33 lb | 44 lb | ||||||
AWS A5.9 ER309L is a low-carbon, high-alloy stainless steel filler metal.
It is widely used for welding dissimilar metals, such as joining stainless steels to carbon or low-alloy steels.
The "L" stands for "Low Carbon," indicating that the wire contains a maximum of 0.03% carbon.
This low carbon content is essential for preventing intergranular corrosion, also known as weld decay, in the weld joint and heat-affected zone.
Its most common application is for joining different types of metals, particularly stainless steel to carbon steel or low-alloy steel.
The high alloy content of ER309L allows it to tolerate dilution from the base metals without compromising the weld's integrity.
The ER309L filler metal has a nominal composition of 23-25% chromium and 12-14% nickel.
This rich alloy makeup is what gives it the strength and flexibility to handle demanding welding tasks.
The low carbon content prevents the formation of chromium carbides at the grain boundaries of the metal when heated during welding.
This ensures that the chromium remains in solution to provide continuous corrosion resistance.
It's excellent for welding various combinations, including Type 309 stainless steel to itself, and more importantly, joining austenitic stainless steels to carbon and low-alloy steels.
It can also be used for welding armor plate and similar high-strength applications.
This versatile wire is suitable for both Gas Metal Arc Welding (GMAW/MIG) and Gas Tungsten Arc Welding (GTAW/TIG).
Its consistent feeding properties make it a reliable choice for automated and manual welding alike.
The main benefit is the ability to produce a strong, crack-resistant joint between different metals.
Its high alloy content and low carbon level ensure that the weld maintains its corrosion resistance even with dilution from the carbon steel side.
Yes, it is an excellent choice for a "buttering" or cladding layer.
Applying a layer of ER309L to a carbon steel base before a final stainless steel overlay prevents dilution and ensures a robust, corrosion-resistant surface.
The key difference is the silicon content.
ER309LSi has a higher silicon content, which improves weld puddle fluidity and arc stability, making it especially well-suited for MIG welding applications where a smooth, clean bead is desired.
ER309L is a staple in the petrochemical and power generation industries for welding pipes and vessels.
It is also used in the fabrication of chemical tanks, pressure vessels, and various heavy equipment where dissimilar joints are common.
Preheating is not typically required when welding stainless steels to themselves.
However, when joining thick sections or welding to carbon steel, a mild preheat may be recommended to reduce thermal stresses and minimize the risk of cracking.
For TIG welding, pure argon is the most common and effective shielding gas.
For MIG welding, a mixture of argon with a small amount of carbon dioxide or oxygen is often used to provide a stable arc and good bead shape.
Like all welding consumables, ER309L should be stored in a clean, dry environment.
Keeping it in its original packaging until use will protect it from moisture and contaminants that can affect weld quality.
An ER309L weld deposit typically has a tensile strength of around 85,000 psi (586 MPa).
This high strength, combined with excellent ductility, ensures the weld joint can handle demanding structural loads.
Yes, its low carbon content makes it highly suitable for applications that will be exposed to elevated service temperatures.
It maintains its corrosion resistance better than standard ER309 in these conditions by preventing carbide precipitation.
The low carbon content and high alloy level provide good toughness and resistance to hot cracking.
It is often the preferred choice for welding thick plates and heavy components that require multiple passes.
The weld deposit has a controlled amount of delta ferrite in the austenitic matrix.
This ferrite helps to prevent solidification cracking during the cooling process, making the weld more robust.
High-quality wire with a consistent diameter and clean surface ensures smooth feeding and a stable arc.
This results in a higher-quality weld with fewer defects, which is crucial for critical applications.
While ER309L is the gold standard for many dissimilar welding applications, other filler metals like ER312 might be used for specific needs.
However, ER309L's balance of strength, ductility, and corrosion resistance makes it the most versatile and widely-used option.
