ER 310 Stainless Steel MIG Wire
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ER 309, ER 309L, ER 309LSi Stainless Steel MIG Wire

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What are ER 309, ER 309L, and ER 309LSi stainless steel MIG wires used for?

The use of ER, 309, ER 309L, and ER 309LSi Stainless Steel MIG Wires is common in welding processes especially when connecting stainless steel or dissimilar metals. An example is the versatile MIG wire that is often employed for general welding purposes such as joining austenitic stainless steels to other materials like carbon or low alloyed steels. The petrochemical industry, food processing sector, and power generation plants are some examples of areas where it might be necessary to have high resistance against corrosion and good strength. For example, ER 309L, which has less carbon content, is used specifically in cases that expose welds to intergranular corrosion.

Chemical processing industries find extensive applications of this wire type alongside pharmaceuticals as well as residential designs. Another variant known as the ER 309LSi with added silicon improves arc control along with final bead appearance therefore playing a vital role in food processing as well as motor vehicle manufacturing among others where aesthetics matter the most. Thus, the selection of the right stainless steel MIG wire depends on what materials are being joined together and what requirements the given applications must satisfy.

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ER309 Stainless Steel MIG Wires

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In terms of composition and application, what is the difference between the three different types of Stainless Steel MIG wires known as: ER 309; ER 309L; ER309LSi?

The compositions and applications of ER 309, ER 309L, and ER 309LSi stainless steel MIG wires are what make them different. ER, 309 on the other hand is a general-purpose MIG wire that has higher chromium and nickel levels. Because of this it is appropriate for welding dissimilar metals like austenitic stainless steels to carbon or low-alloy steels.

On the other hand, compared to ER 309 wire, ER 309L contains lesser carbon content which reduces carbide precipitation tendency and enhances intergranular corrosion resistance. This makes it more suitable for welding in high temperature environments or where PWHT is not possible.

ER 309LSi on the other hand contains added silicon which improves wetting as well as weld bead shape that makes it best suited for aesthetic conscious critical applications such as those in food and beverage industries. Moreover, ER 309LSi has excellent arc stability, which enables it to be used in automated or robotic welding processes. However, depending on specific welding requirements, base materials as well as environmental conditions of the intended application one will choose among ER 309, ER 309L or ER 309 LSi Stainless Steel MIG Wire that suits him/her most.

ER 309 Stainless Steel MIG Wire Specification

Classification AWS A5.9, ER309/309L
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 ER309/309H MIG & TIG Filler Metal Application & uses Hardware tools
Metallurgy
Machinery
Construction
Shipbuilding
Petroleum
Chemical plant
Power sector
Gas Industry

ER 309 Stainless Steel MIG Wire Stock Availability

ER 310 MIG Filler Wire

MIG Filler Wire

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ER 310 MIG Welding Wire

MIG Welding Wire

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Equivalent Grades Of Stainless Steel ER309 MIG Wires

STANDARD AWS UNS DIN Class
SS ER-309 A5.9 S30983 1.4842 ER309/309L

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Chemical Composition of SS ER 309 MIG Wires

C Cr Ni Mo Mn Si P S CU
0.03 23.0-25.0 12.0-14.0 0.75 1.0-2.5 0.30-0.65 0.03 0.03 0.75

Mechanical Properties of SS ER309 MIG Wires

Yield Strength (N/mm2) Tensile Strength Elongation
58* 86* 40*

Stainless Steel ER309 MIG Wires Ready Stock

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ER309 Stainless Steel MIG Wires Applications and Uses

  • Shaft Making
  • Automobiles
  • Electric Motors & Pumps
  • Railways
  • Mining
  • Miscellaneous Fabrication
Shaft Making

ER309 Stainless Steel MIG Wires in Shaft Making

Automobiles

ER309 Stainless Steel MIG Wires in Automobiles

Electric Motors & Pumps

ER309 Stainless Steel MIG Wire in Electric Motors & Pumps

Railways

ER309 Stainless Steel MIG Wire in Railways

Mining

ER309 Stainless Steel MIG Wire in Mining

Miscellaneous Fabrication

ER309 Stainless Steel MIG Wire in Miscellaneous Fabrication

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