Stainless Steel ER-320 Filler Wires

Conrad Welding Supplies, based in Houston, USA, stands out as a top manufacturer and distributor of specialty welding products, including the Stainless Steel ER320 Filler Wires. Designed for high-performance welding of highly alloyed stainless steels, ER320 is a go-to option for tough environments where heat and corrosion resistance are crucial. Conra’s ER320 filler wires are crafted to meet rigorous quality and composition standards, ensuring outstanding weld integrity and metallurgical stability. Catering to industries like petrochemical, power generation, and aerospace, Conrad Welding Supplies is recognized for dependable delivery, expert technical support, and precision products tailored to the needs of professional welders and fabricators.

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Stainless Steel ER-320 Filler Wires Specification

Classification : AWS A5.9 ER-320

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-320 Stainless Steel

Form : Filler Wire

What is Stainless Steel ER-320 Filler Wires?

ER320 filler wire is a premium austenitic stainless steel that contains around 25–30% nickel, 19–23% chromium, and carefully controlled amounts of molybdenum (2–3%), niobium (Nb), manganese, and silicon. It’s stabilized with niobium (columbium) to prevent intergranular corrosion and stress corrosion cracking. ER320 showcases impressive tensile strength (70,000–90,000 psi), along with excellent ductility and toughness at high temperatures. The wire delivers a stable arc, a smooth bead appearance, and minimal spatter, making it particularly well-suited for welding base metals of similar composition in corrosive or high-temperature service conditions.

If You Are Looking To Buy High Quality
Electrodes and Filler Wire

We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.

Stainless Steel ER-320 Filler Wires Chemical Composition

Element	C	Mn	Si	S	P	Cr	Ni	Mo	Cu	Nb+Ta
Percent	0.03	1.50	0.35	0.010	0.012	20.0	34.0	2.5	3.5	0.50

Stainless Steel ER-320 Filler Wires Mechanical Properties

UTS	Elongation
(MPa)	(L= 4d)%
580	36.0

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

Conrad Welding Supplies is a prominent manufacturer and supplier of top-tier Stainless Steel ER-320 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-320 Filler Wires Uses

Stainless Steel ER320 Filler Wire is specifically tailored for welding alloy 320 stainless steel and other high-nickel, chromium-rich alloys commonly used in chemical processing, heat exchangers, furnace components, and superheater tubes. It excels in high-temperature and corrosive settings, making it perfect for power plants, oil refineries, and pulp and paper mills. ER320 provides strong resistance to intergranular corrosion, oxidation, and thermal fatigue, which makes it ideal for components that experience thermal cycling.

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.