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Flux-Core Filler Metal Support

AWS classification pages for Flux-Cored / FCAW flux-cored wire. Browse by base metal family, then open the AWS page for use notes and Amazon searches by diameter.

Flux-Cored / FCAW 62 classification pages AWS spec family called out

Carbon steel

AWS A5.20 E70T-1C

Mild steel gas-shielded flux-cored welding with CO2 shielding

 AWS A5.20 E70T-1C/M

Mild steel gas-shielded flux-cored welding where C/M shielding-gas classification is specified

 AWS A5.20 E70T-1M

Mild steel gas-shielded flux-cored welding with mixed-gas shielding

 AWS A5.20 E70T-9C

Mild steel gas-shielded flux-cored welding with CO2 shielding

 AWS A5.20 E70T-9M

Mild steel gas-shielded flux-cored welding with mixed-gas shielding

 AWS A5.20 E71T-1C

Mild steel all-position gas-shielded flux-cored welding with CO2 shielding

 AWS A5.20 E71T-1C/M

Mild steel all-position gas-shielded flux-cored welding

 AWS A5.20 E71T-1CJ

Mild steel FCAW where E71T-1CJ impact requirements are specified

 AWS A5.20 E71T-1M

Mild steel all-position gas-shielded flux-cored welding with mixed-gas shielding

 AWS A5.20 E71T-1MJ

Mild steel FCAW where E71T-1MJ impact requirements are specified

 AWS A5.20 E71T-8

Mild steel self-shielded structural flux-cored welding

 AWS A5.20 E71T-9C

Mild steel gas-shielded flux-cored welding with CO2 shielding

 AWS A5.20 E71T-9C/M

Mild steel gas-shielded flux-cored welding where E71T-9C/M is specified

 AWS A5.20 E71T-9CJ

Mild steel FCAW where E71T-9CJ impact requirements are specified

 AWS A5.20 E71T-9M

Mild steel gas-shielded flux-cored welding with mixed-gas shielding

 AWS A5.20 E71T-9MJ

Mild steel FCAW where E71T-9MJ impact requirements are specified

 AWS A5.20 E71T8-K6

Mild steel self-shielded FCAW where E71T8-K6 is specified

Carbon steel and low-alloy steel

AWS A5.20/A5.20M:2025 E70T-1C-H8

Carbon steel and low-alloy steel

 AWS A5.20/A5.20M:2025 E70T-9C-H8

Carbon steel and low-alloy steel

 AWS A5.20/5.36 E71T-1C/1M

Carbon steel and low-alloy steel

 AWS A5.20 E71T-1M-H4

Carbon steel and low-alloy steel

 AWS A5.20:2021 E71T-8J H8

Carbon steel and low-alloy steel

 AWS A5.20 E71T-9M-H4

Carbon steel and low-alloy steel

 AWS A5.20 E71T-12MJ-H4

Carbon steel and low-alloy steel

 AWS A5.20 E71T12-M21A4-CS2-H4

Carbon steel and low-alloy steel

Chrome-moly and low-alloy steel

AWS A5.29/5.36 E81T-B2C/B2M

Chrome-moly and low-alloy steel

 AWS A5.29/5.36 E81T-Ni1C/M-JH4

Chrome-moly and low-alloy steel

 AWS A5.29/5.36 E91T1-B3C/B3M

Chrome-moly and low-alloy steel

 AWS A5.29/5.36 E91T1-B9M-H4

Chrome-moly and low-alloy steel

 AWS A5.29 E110T5-K4C

Chrome-moly and low-alloy steel

 AWS A5.29 E110T5-M21A6-K4-H4

Chrome-moly and low-alloy steel

 AWS A5.29 E111T1-C1A0-K3-H4

Chrome-moly and low-alloy steel

 AWS A5.29 E111T1-K3C

Chrome-moly and low-alloy steel

 AWS A5.29 E120T5-K4C H4

Chrome-moly and low-alloy steel

Low-alloy steel

AWS A5.29 E81T1-GC

Low-alloy FCAW where E81T1-GC is specified

 AWS A5.29 E81T1-GM

Low-alloy FCAW where E81T1-GM is specified

 AWS A5.29 E81T1-K2CJ

Low-alloy FCAW where E81T1-K2CJ is specified

 AWS A5.29 E81T1-K2MJ

Low-alloy FCAW where E81T1-K2MJ is specified

 AWS A5.29 E81T1-Ni1CJ

Low-alloy FCAW where E81T1-Ni1CJ is specified

 AWS A5.29 E81T1-Ni1MJ

Low-alloy FCAW where E81T1-Ni1MJ is specified

 AWS A5.29 E91T1-B3C

B3/P22 chrome-moly FCAW with CO2 shielding where specified

 AWS A5.29 E91T1-B3M

B3/P22 chrome-moly FCAW with mixed-gas shielding where specified

 AWS A5.29 E91T1-K2C

Low-alloy FCAW where E91T1-K2C is specified

 AWS A5.29 E91T1-K2M

Low-alloy FCAW where E91T1-K2M is specified

Mild / Carbon Steel

AWS A5.20 / AWS A5.18 E70C-6M

Mild / Carbon Steel

 AWS A5.20 / AWS A5.18 E71T-1

Mild / Carbon Steel

 AWS A5.20 / AWS A5.18 E71T-11

Mild / Carbon Steel

 AWS A5.20 / AWS A5.18 E71T-GS

Mild / Carbon Steel

Stainless steel

AWS A5.22 E308LFC-O

304 and 304L stainless self-shielded/FC-O welding where specified

 AWS A5.22 E308LT1-1/-4

304 and 304L stainless flux-cored welding

 AWS A5.22 E308LTO-3

Stainless steel

 AWS A5.22 E309LFC-O

309 stainless and stainless-to-mild steel self-shielded/FC-O welding where specified

 AWS A5.22 E309LT1-1/-4

309 stainless and stainless-to-mild steel flux-cored welding

 AWS A5.22 E309LTO-3

Stainless steel

 AWS A5.22 E310T0-1/-4

Stainless steel

 AWS A5.22 E310T1-1/-4

Stainless steel

 AWS A5.22 E312FC-O

Dissimilar steels and hard-to-weld stainless repairs where E312FC-O is specified

 AWS A5.22 E312T1-1/-4

Stainless steel

 AWS A5.22 E316LFC-O

316 and 316L stainless self-shielded/FC-O welding where specified

 AWS A5.22 E316LT1-1/-4

316 and 316L stainless flux-cored welding

 AWS A5.22 E347T1-1/-4

Stainless steel

 AWS A5.22 E2209T1-1/-4

Stainless steel
Use note: AWS classifications are used here as practical lookup keys. Always verify the current AWS specification, manufacturer data sheet, WPS, code requirements, base metal grade, shielding gas or current type, diameter, and package size before purchasing or welding.