AWS Class ER420 Mig and Tig Filler Welding Wire and Rod

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ED Stainless provides AWS Class ER420 MIG and TIG filler wires and rods for welding martensitic stainless steels that need high hardness and wear resistance. ER420 filler metal is used where strong mechanical strength and good corrosion resistance are critical after post-weld heat treatment. Our wire and rod products are produced to strict tolerances, ensuring smooth feeding, stable arc characteristics, and excellent weld integrity. ED Stainless supports industries such as cutlery, turbine manufacturing, valve production, and chemical processing with ER420 materials engineered for both performance and durability.

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ER420 is a high-carbon martensitic stainless steel alloy containing about 12–14% Chromium and 0.15–0.40% Carbon. It offers high tensile strength (~760 MPa) and hardness when heat treated. After proper post-weld heat treatment, the weld metal can reach hardness levels up to 500 HB. It provides moderate corrosion resistance and excellent wear and abrasion resistance. ER420 filler is best applied in settings that require high hardness and strength but may need stress-relief or preheat/postheat treatments to avoid cracking in sensitive welds.

AWS Class ER420 Mig and Tig Filler Welding Wire and Rod Specifications

Classification	AWS A5.9, ER420
Form	MIG spools, TIG cut lengths, Reels and Coils
Type Of Welding	Inert Gas Welding
Current	MIG-DCEP / TIG-DCEN
Diameters	.023”, .030”, .035”, .045”, 1/16”, 3/32”, 1/8”
Standard TIG straight lengths are available	36” (914 mm) or 39” (1000 mm) lengths. Other lengths available upon request.
AWS ER420 MIG & TIG Filler Metal Application & uses	Hardware tools Metallurgy Machinery Construction Shipbuilding Petroleum Chemical plant Power sector Gas Industry

AWS Class ER420 Mig and Tig Filler Welding Wire and Rod Chemical Composition

C	Cr	Ni	Mo	Mn	Si	P	S	Cu
0.03	19.5-22.0	9.0-11.0	0.75	1.0-2.5	0.65-1.00	0.03	0.03	0.75

AWS Class ER420 Mig and Tig Filler Welding Wire and Rod Mechanical Properties

Tensile Strength (psi)	86,000 psi (593 MPa)
Yield Strength (psi)	57,000 psi (393 MPa)
Elongation (%)	42%

We offer These Products as per DIN, ISO, JIS or ANSI Standard.

Why Choose AWS Class ER420 MIG and TIG Filler Welding Wire and Rod from Ed Stainless?

Largest Inventory

Customer Support

On Time Deliveries

ISO Certified

Types of AWS Class ER420 MIG and TIG Filler Welding Wire and Rod

Stainless Steel ER420 MIG Filler Wire

ER420 MIG filler wire offers high hardness and wear resistance, ideal for welding martensitic stainless steels in applications requiring durable and abrasion-resistant joints under high stress.

Stainless Steel ER420 TIG Filler Wire

ER420 TIG filler wire provides excellent hardness and wear resistance, suitable for welding martensitic stainless steels, ensuring strong, durable welds in high-stress and abrasive environments.

Stainless Steel ER420 TIG Filler Rod

ER420 TIG filler rod delivers superior hardness and abrasion resistance, perfect for welding martensitic stainless steels in applications demanding high strength, durability, and performance under extreme conditions.

We guarantee the highest quality of our AWS Class ER420 MIG and TIG Filler Welding Wire and Rod through thorough in-house testing and inspection. Our team conducts rigorous evaluations to confirm the product’s performance, strength, and durability in various conditions. We are committed to on time and efficient delivery. Guaranteeing our clients receive their orders on time. This approach guarantees that every product meets the expectations of our customers without any delays.

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AWS Class ER420 MIG and TIG Filler Welding Wires and Rods Uses

ER420 MIG and TIG wires and rods are used to weld or overlay components subjected to wear, such as pump shafts, valve seats, cutting blades, and turbine parts. These materials excel in hard-facing, surgical tools, and industrial components needing both corrosion resistance and wear protection. ER420 is also utilized in die fabrication, knife making, and chemical mixers. Welds made with ER420 require post-weld heat treatment to achieve maximum hardness and prevent cracking. This alloy is especially suitable for stainless steels of the 420 series and other high-carbon martensitic stainless grades.