Stainless Steel Welding Consumables

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MIG · TIG · SMAW

Stainless Steel Welding Wire & Electrodes

Source stainless steel welding consumables for austenitic, stabilized and duplex stainless steels, including solid MIG/TIG filler metals and SMAW covered electrodes. Classification should be matched to the base-metal combination, approved WPS/PQR, service environment and applicable project specification.

ER308L ER309L ER316L ER347 ER310 ER317 ER2209 E308L-16 E316L-16 E309-16 E347-16 E2209
Quick Selection

Common Starting Points by Base Metal

The combinations below are practical screening references, not a substitute for a qualified welding procedure. Final filler selection depends on the exact grades being joined, dilution, joint design, service condition, heat input and project code.

304 / 304L Family

Common starting fillers include ER308L for MIG/TIG and E308L-16 for SMAW.

316 / 316L Family

Common starting fillers include ER316L and E316L-16 for Mo-bearing 316-family stainless steels.

Dissimilar Stainless / Carbon Steel

ER309L and E309-family electrodes are widely used as starting points for selected stainless-to-carbon-steel and transition joints.

321 / 347 Stabilized Grades

ER347 and E347-family electrodes are common options for stabilized stainless-steel welding.

Duplex 2205

ER2209 and E2209-family electrodes are common fillers for UNS S31803 / S32205 duplex stainless steels.

310 / Heat-Resistant Stainless

ER310 and E310-family electrodes may be specified for selected high Cr-Ni heat-resistant stainless applications.

Selection boundary: Do not select a filler metal only by matching a familiar grade number. The approved WPS/PQR, exact base-metal combination, design code, corrosion environment and operating temperature remain the governing criteria.
MIG / TIG

Stainless Steel Solid Welding Wire & TIG Filler Rod Classifications

The table separates the classification systems that were previously mixed together. GB/T, ISO and AWS designations are shown as cross-reference aids and should not be treated as automatic interchangeability without checking the governing specification.

Product / Grade GB/T 29713 ISO 14343-B AWS A5.9/A5.9M Typical Selection Reference
S308 S308 SS308 ER308 302 / 304-type 18Cr-8Ni austenitic stainless steels.
S308L S308L SS308L ER308L 304L and other low-carbon 18-8 stainless-steel welding.
S308LSi S308LSi SS308LSi ER308LSi 308L-type filler with higher Si; often selected where improved weld-pool wetting is useful.
S321 S321 SS321 ER321 Titanium-stabilized 321-family stainless-steel applications.
S316 S316 SS316 ER316 316-type Mo-bearing austenitic stainless steels.
S316L S316L SS316L ER316L Low-carbon 316L-type Mo-bearing stainless steels.
S309 S309 SS309 ER309 309-family stainless and selected transition / dissimilar joints.
S309L S309L SS309L ER309L Low-carbon 309 filler commonly considered for selected stainless-to-carbon-steel joints.
S309LSi S309LSi SS309LSi ER309LSi 309L-type Si-bearing filler for selected dissimilar and transition welding.
S309Mo S309Mo SS309Mo ER309Mo Mo-bearing 309-type filler for selected stainless and dissimilar combinations.
S309LMo S309LMo SS309LMo ER309LMo Low-carbon Mo-bearing 309-type filler; final use should follow the approved WPS/PQR.
S347 S347 SS347 ER347 347 / 321 stabilized stainless-steel families.
S310 S310 SS310 ER310 310 / 310S-type high Cr-Ni heat-resistant stainless steels and selected dissimilar joints.
S317 S317 SS317 ER317 317-family higher-Mo austenitic stainless-steel applications.
S2209 S2209 SS2209 ER2209 Standard duplex stainless steels such as UNS S31803 / S32205.

Classification cross-references are for sourcing and screening. Confirm the standard edition, chemistry limits and acceptance requirements specified by the PO or welding procedure.

SMAW

Stainless Steel Covered Electrodes

These are SMAW covered electrodes, not TIG rods. Chinese market trade grades are shown separately from GB/T, ISO and AWS classifications to prevent designation systems from being mixed together.

Trade / Page Model GB/T 983 ISO 3581 AWS A5.4/A5.4M Typical Selection Reference
A002 E308L-16 E (19 9 L) R 3 2 E308L-16 304L / low-carbon 18-8 stainless steels.
A022 E316L-16 E (19 12 3 L) R 3 2 E316L-16 316L / low-carbon Mo-bearing stainless steels.
A042 E309LMo-16 E (23 12 2 L) R 3 2 E309LMo-16 Low-carbon 309Mo-type filler for selected clad, transition and dissimilar joints.
A102 E308-16 E (19 9) R 3 2 E308-16 304-type stainless steels.
A107 E308-15 E (19 9) B 4 2 E308-15 304-type stainless steels; -15 basic-coated classification.
A132 E347-16 E (19 9 Nb) R 3 2 E347-16 321 / 347 stabilized stainless-steel applications.
A137 E347-15 E (19 9 Nb) B 4 2 E347-15 Stabilized stainless applications; -15 basic-coated classification.
A202 E316-16 E (19 12 2) R 3 2 E316-16 316-type Mo-bearing stainless steels.
A207 E316-15 E (19 12 2) B 4 2 E316-15 316-type stainless steels; -15 basic-coated classification.
A212 E318-16 E (19 12 3 Nb) R 3 2 E318-16 Nb-stabilized, Mo-bearing stainless-steel applications.
A302 E309-16 E (22 12) R 3 2 E309-16 309-family stainless, stainless lining and selected dissimilar joints.
A307 E309-15 E (22 12) B 4 2 E309-15 309 / selected dissimilar joints; -15 basic-coated classification.
A312 E309Mo-16 ES309Mo-16 E309Mo-16 Mo-bearing 309 filler for selected transition and dissimilar joints.
A402 E310-16 ES310-16 E310-16 310 / 310S-type heat-resistant stainless steels and selected dissimilar applications.
A407 E310-15 ES310-15 E310-15 310-type heat-resistant stainless applications; -15 basic-coated classification.
E2209-17 Confirm against supplier TDS / CoC ES2209-17 E2209-17 Standard duplex stainless steels such as UNS S31803 / S32205.
E2553-16 Confirm against supplier TDS / CoC ES2553-16 E2553-16 25Cr duplex stainless families, including selected Alloy 255 / UNS S32550 applications.
E2553-17 Confirm against supplier TDS / CoC Confirm complete classification E2553-17 25Cr duplex applications; final classification and product scope must follow manufacturer documentation.
Do not treat E2553 as a generic “2507 filler”. E2553 classifications are associated with selected 25Cr duplex systems. Super-duplex filler selection for grades such as S32750 / S32760 should be confirmed separately against the approved procedure and required filler classification.
Standards

Classification Systems Used on This Page

MIG / TIG Bare Wire & Rod

  • GB/T 29713 — Chinese classification basis for stainless welding wire / rods.
  • ISO 14343 — international classification system.
  • AWS A5.9/A5.9M — bare stainless welding electrodes and rods.

SMAW Covered Electrodes

  • GB/T 983 — Chinese classification basis for stainless covered electrodes.
  • ISO 3581 — covered electrodes for stainless and heat-resisting steels.
  • AWS A5.4/A5.4M — stainless steel electrodes for shielded metal arc welding.
Standard-edition rule: The edition required by the PO, WPS/PQR, fabrication code or project specification takes precedence. A newer published edition does not automatically mean an existing stocked product is certified to that edition.
Procurement

How to Specify Stainless Steel Welding Consumables

1. Welding Process

Specify MIG/GMAW, TIG/GTAW or SMAW. Do not use “welding rod” as the only product description.

2. Classification

State the required AWS, ISO or GB/T classification, including the coating suffix where applicable.

3. Base Metals

Provide both materials being joined, for example 304L-to-304L or 304L-to-carbon steel.

4. Service Environment

Include chlorides, chemicals, design temperature, corrosion requirements and any post-weld treatment.

5. Procedure Requirements

Identify the WPS/PQR, welding code, heat-input limits or special procedure controls where required.

6. Documentation

State required certificates, lot identification, test documentation or third-party inspection scope.

Supply Details

Sizes, Packaging & Supply Format

Welding consumable dimensions and packing formats vary by classification, manufacturer and order quantity. For that reason, this page does not publish unverified universal size or package-weight claims.

MIG / GMAW Wire

Confirm required wire diameter, spool or drum format, unit weight, brand/manufacturer requirement and shielding-gas basis.

TIG / GTAW Rod

Confirm rod diameter, required length, package quantity and required classification.

SMAW Electrodes

Confirm electrode diameter, length, coating suffix, current/polarity requirements and manufacturer packing format.

For a firm quotation: ask LYH Steel to confirm the actual available dimensions and packaging for the requested classification instead of assuming all sizes are stocked.
Quality

Inspection & Documentation

Documentation requirements should be defined before ordering. Depending on the manufacturer, product and PO scope, the buyer may request verification of:

Product Identity & Traceability
  • Classification and product designation
  • Manufacturer / brand where specified
  • Batch or lot identification where provided
  • Package and label verification
Technical Documentation
  • Manufacturer TDS / technical data
  • CoC or test documentation where applicable
  • Chemical / mechanical data where supplied
  • Third-party inspection coordination if required by PO
RFQ Checklist

Send a Complete Welding Consumables Inquiry

A complete RFQ reduces classification mistakes and repeated quotation revisions. Include the following information where available:

Welding Process AWS / ISO / GB Classification Base Metal 1 Base Metal 2 Diameter Rod Length Spool / Pack Requirement Quantity WPS / PQR Service Environment Required Documents Destination Incoterms
FAQ

Stainless Steel Welding Consumables FAQs

What is the difference between ER308L and E308L-16?

ER308L is an AWS A5.9 bare filler classification commonly used for MIG/GMAW or TIG/GTAW applications. E308L-16 is an AWS A5.4 covered-electrode classification used for SMAW. They are different product forms and welding processes.

Which welding wire is commonly used for 304L stainless steel?

ER308L is a common starting filler for 304L-family stainless steels. The final choice should follow the approved welding procedure, joint design and project specification.

Which filler is commonly used for 316L stainless steel?

ER316L is commonly considered for MIG/TIG welding of 316L-family base metals, while E316L-16 is a common SMAW classification. Final selection depends on the qualified procedure and service requirements.

Can ER309L be used for stainless steel to carbon steel welding?

ER309L is widely used as a starting point for selected stainless-to-carbon-steel and transition joints because of its higher alloy content. It should not be applied automatically without checking dilution, base metals, service conditions and the approved WPS/PQR.

Which filler is commonly used for duplex 2205?

ER2209 is a common solid filler classification for standard duplex grades such as UNS S31803 and S32205. E2209-family covered electrodes are used for SMAW applications. Duplex welding also requires control of procedure variables such as heat input and interpass conditions.

Are GB, ISO and AWS welding classifications interchangeable?

No. Cross-reference tables help buyers identify similar classification families, but they do not by themselves establish contractual equivalence. The PO, project specification, WPS/PQR and required standard edition control acceptance.

What information should I send for a stainless welding consumables quotation?

Send the welding process, required classification, base metals, diameter or product dimensions, quantity, packaging requirement, WPS/PQR or applicable code, service environment, documentation scope and delivery destination.

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