ER 309L Stainless steel 1.4332 UNS30883

What is stainless steel ER 309L？

ER309L is similar in composition to E309L, with the minor difference of the carbon being lower than 0.03% in ER309L. The lower carbon content allows for a reduction in the likelihood of intergranular carbide precipitation without having to use a stabilizer such as titanium. Filler metals of this classification are commonly used for welding similar alloys in the wrought or cast form. They are also used to weld Type 304 and similar base metals where severe corrosion conditions exist requiring higher alloy weld metal. They are used in dissimilar metal welds, such as joining Type 304 to carbon steel. This grade may be used for joining and overlay of stainless steels similar in composition. ER309L is ideal for industrial and furnace boiler parts, annealing chambers, lämmönvaihtimet, and fused salt treatment installations.

Hakemuksia varten ER 309L ruostumaton teräs

• Sheet metal
• High pressure piping and tubing
• Use for welding dissimilar alloys in wrought or cast form
• Occasionally used for welding “18-8” base metals when severe corrosion conditions exist or dissimilar metals

ER 309L stainless steel Finished Products Form

Wires, Filler Wires, Coil Wires, Welding Wires

Equivalents of grade ER 309L

STANDARD	AWS	MEILLE	FROM	Class	SISÄÄN	BS
SS ER-309L	A5.9	S30883	1.4332	ER309L	23 12 L	309S92

ER 309L Stainless steel 1.4332 UNS30883 Kemiallinen koostumus

Chemical Composition Limits
Weight%	C	Mn	Ja	Cr	Sisään	S	P	Mo	Cu
ER 309L	0.03 max	1.0-2.5	0.30-0.65	23-25	12-14	0.03 max	0.03 max	0.75 max	0.75 max

Mekaaniset ominaisuudet 

Vetolujuus (psi)	Tuottovoima (psi)	Percent Elongation in 2”
87,000 psi (600 MPa)	59,000 psi (407 MPa)	40%

ER 309L Stainless steel 1.4332 UNS30883 Fyysiset ominaisuudet

Tiheys: Typically around 7.9 g/cm³, providing insight into mass per unit volume.

Sulamispiste: Approximately 1400-1450°C (2552-2642°F), indicating solid to liquid transition temperature.

Electrical Conductivity: High, facilitating efficient welding processes.

Lämmönjohtokyky: Moderate, ensuring effective heat transfer during welding.

Ductility: Exhibits good ductility, allowing for flexibility in welding applications.

Magnetic Properties: Typically non-magnetic in the annealed condition, minimizing interference.

Korroosionkestävyys: Offers excellent corrosion resistance, maintaining weld integrity in various environments.

Advantages of Using ER 309L Filler Metal

ER 309L filler metal offers several benefits for welding projects. Its corrosion resistance makes it an excellent choice for long-lasting joins. This ensures the durability of welds, even in harsh environments.

Another advantage is its low carbon content. This feature reduces carbide precipitation and cracking risks, enhancing weld quality. The filler metal’s ability to maintain properties at high temperatures further boosts its appeal.

Key advantages include:

• Excellent corrosion resistance
• Reduced cracking risk
• High temperature stability

Best Practices and Welding Techniques

To maximize the benefits of stainless steel ER 309L, adopting suitable welding techniques is crucial. This filler metal is compatible with MIG and TIG methods. Both techniques ensure strong and clean welds.

Focusing on correct heat input is vital. Excessive heat can damage the integrity of the weld joint. Precision and control are key to a successful weld.

For best results, follow these practices:

• Maintain appropriate heat input
• Use MIG or TIG techniques
• Apply steady and controlled welding speed

Conclusion

Stainless steel ER 309L is essential for high-quality welding applications. Its unique properties, such as corrosion resistance and compatibility with various alloys, make it a top choice.

Mastering the use of ER 309L enhances weld quality and project longevity. Select it for reliable performance in demanding conditions.