Stainless Steel Welding Consumables
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.
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.
Common starting fillers include ER308L for MIG/TIG and E308L-16 for SMAW.
Common starting fillers include ER316L and E316L-16 for Mo-bearing 316-family stainless steels.
ER309L and E309-family electrodes are widely used as starting points for selected stainless-to-carbon-steel and transition joints.
ER347 and E347-family electrodes are common options for stabilized stainless-steel welding.
ER2209 and E2209-family electrodes are common fillers for UNS S31803 / S32205 duplex stainless steels.
ER310 and E310-family electrodes may be specified for selected high Cr-Ni heat-resistant stainless applications.
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.
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. |
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.
How to Specify Stainless Steel Welding Consumables
Specify MIG/GMAW, TIG/GTAW or SMAW. Do not use “welding rod” as the only product description.
State the required AWS, ISO or GB/T classification, including the coating suffix where applicable.
Provide both materials being joined, for example 304L-to-304L or 304L-to-carbon steel.
Include chlorides, chemicals, design temperature, corrosion requirements and any post-weld treatment.
Identify the WPS/PQR, welding code, heat-input limits or special procedure controls where required.
State required certificates, lot identification, test documentation or third-party inspection scope.
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.
Confirm required wire diameter, spool or drum format, unit weight, brand/manufacturer requirement and shielding-gas basis.
Confirm rod diameter, required length, package quantity and required classification.
Confirm electrode diameter, length, coating suffix, current/polarity requirements and manufacturer packing format.
Inspection & Documentation
Documentation requirements should be defined before ordering. Depending on the manufacturer, product and PO scope, the buyer may request verification of:
- Classification and product designation
- Manufacturer / brand where specified
- Batch or lot identification where provided
- Package and label verification
- Manufacturer TDS / technical data
- CoC or test documentation where applicable
- Chemical / mechanical data where supplied
- Third-party inspection coordination if required by PO
Send a Complete Welding Consumables Inquiry
A complete RFQ reduces classification mistakes and repeated quotation revisions. Include the following information where available:
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.
