Stainless Steel ER-320LR Filler Wires

Serving a wide range of welding and fabrication industries, Conrad Welding Supplies, a reputable manufacturer and supplier of stainless steel ER-320LR filler wires, has its headquarters in Houston, USA. ER-320LR filler wires are made especially for welding high-alloy austenitic stainless steels and are renowned for their low carbon content and superior resistance to intergranular corrosion. Conra uses sophisticated production techniques and stringent testing to guarantee the highest standards of performance, quality, and consistency. In sectors like power generation, chemical processing, and pharmaceuticals where operational reliability depends on resistance to aggressive media and thermal stability, these filler wires are highly favoured.

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Stainless Steel ER-320LR Filler Wires Specification

Classification : AWS A5.9 ER-320LR, A5.9M:2006

Soft Wire Diameter Range : 0.06mm – 2.30 mm

Hard Wire Diameter Range : 0.30mm – 3.00mm

Diameter : .035”, .045”, 1/16”, 3/32”, 1/8”, 5/32”

Length : 36″ (914mm) Customized

Materials : ER-320LR Stainless Steel

Form : Filler Wires

What is Stainless Steel ER-320LR Filler Wires?

Stainless Steel ER-320LR Filler Wires contain approximately 19–21% chromium, 32–36% nickel, 2–3% molybdenum, with low carbon and trace amounts of niobium, silicon, and manganese. The “LR” (Low Residuals) version ensures minimal carbon and ferrite content, reducing the risk of carbide precipitation and promoting superior weld integrity. The wire has a yield strength of about 300 MPa, a tensile strength of about 550–700 MPa, and an elongation of more than 30%. It is perfect for crucial fabrication and repair work because it provides exceptional weldability, toughness, and corrosion resistance, particularly in highly oxidising and reducing environments.

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Stainless Steel ER-320LR Filler Wires Chemical Composition

Weight%	C	Mn	Si	Cr	Ni	S	P	Cb+Ta	Mo	Cu
ER 320LR	0.025 max	1.5-2.0	0.15 max	19-21	32-36	0.02 max	0.015 max	8X C min / 0.4 max	2-3	3-4

Stainless Steel ER-320LR Filler Wires Equivalent Grades

STANDARD	AWS	UNS
SS ER320/320LR	A5.9	N08022

Stainless Steel ER-320LR Filler Wires Mechanical Properties

Material	Ultimate Tensile Strength		Offset Yield Strength 0.2 %		Elongation (%)
Material	psi	MPa	psi	MPa	Elongation (%)
ER 320LR	86,000	590	57,500	400	35

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Top Manufacturer and Supplier of Stainless Steel ER-320LR Filler Wires in Houston , USA

Conrad Welding Supplies is a prominent manufacturer and supplier of top-tier Stainless Steel ER-320LR Filler Wires in Houston , USA. We specialize in providing advanced welding solutions and offer a wide range of products, including coated electrodes, welding electrodes, flux core, MIG & TIG welding wires, SAW flux, and filler wires. Known for reliable delivery and outstanding customer service, we are committed to offering high-quality welding materials that ensure durability and optimal performance for various industrial applications. Our dedication to excellence has made us a trusted partner for all your welding needs.

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Stainless Steel ER-320LR Filler Wires Uses

In welding applications where corrosion resistance is essential, particularly in harsh chemical environments, stainless steel ER-320LR filler wires are widely used. They are perfect for joining high-alloy austenitic stainless steels, such as those found in petrochemical and chemical industry tanks, reactors, heat exchangers, and pressure vessels. The wires are appropriate for the food processing, power generation, and pharmaceutical industries because they function well in both oxidising and reducing environments. Because of their low carbon content, carbide formation is reduced, guaranteeing that welds won’t intergranularly corrode even after being exposed to high temperatures. The ER-320LR is ideal for both repair and fabrication tasks.

Industry We Serve

We provide high-quality electrodes, filler wire, MIG and TIG welding wires to a wide range of industries, including oil and gas, food, marine, petrochemical, power generation, and aerospace.