European MIG Welding Wire Selection Chart

Including US Equivalent to European MIG wire classification.

MIG Welding (Solid Wire)

Mild Steel

Material Thickness	Wire Diameter	European Classification	US Equivalent
0.6-0.8 mm	0.6 mm	G3Si1 / SG2	ER70S-6
0.8-2.0 mm	0.8 mm	G3Si1 / SG2	ER70S-6
2.0-4.0 mm	1.0 mm	G3Si1 / SG2	ER70S-6
4.0-8.0 mm	1.2 mm	G3Si1 / SG2	ER70S-6
> 8.0 mm	1.6 mm	G3Si1 / SG2	ER70S-6

Stainless Steel

Material Thickness	Wire Diameter	European Classification	US Equivalent
0.6-0.8 mm	0.6 mm	G 19 9 L / 1.4316	ER308L
0.8-2.0 mm	0.8 mm	G 19 9 L / 1.4316	ER308L
2.0-4.0 mm	1.0 mm	G 19 9 L / 1.4316	ER308L
4.0-8.0 mm	1.2 mm	G 19 9 L / 1.4316	ER308L
> 8.0 mm	1.6 mm	G 19 9 L / 1.4316	ER308L

Aluminum

Material Thickness	Wire Diameter	European Classification	US Equivalent
0.8-2.0 mm	0.8 mm	G Al 5 / AlMg5	ER5356
2.0-4.0 mm	1.0 mm	G Al 5 / AlMg5	ER5356
4.0-8.0 mm	1.2 mm	G Al 5 / AlMg5	ER5356
> 8.0 mm	1.6 mm	G Al 5 / AlMg5	ER5356

MIG Welding (Flux-Cored Wire)

Mild Steel

Material Thickness	Wire Diameter	European Classification	US Equivalent
1.0-2.0 mm	0.8 mm	T 42 Z W N / E71T-1	E71T-1
2.0-5.0 mm	1.0 mm	T 42 Z W N / E71T-1	E71T-1
5.0-10.0 mm	1.2 mm	T 42 Z W N / E71T-1	E71T-1
> 10.0 mm	1.6 mm	T 42 Z W N / E71T-1	E71T-1

Stainless Steel

Material Thickness	Wire Diameter	European Classification	US Equivalent
1.0-2.0 mm	0.8 mm	T 19 9 L R / E308LT	E308LT-1
2.0-5.0 mm	1.0 mm	T 19 9 L R / E308LT	E308LT-1
5.0-10.0 mm	1.2 mm	T 19 9 L R / E308LT	E308LT-1
> 10.0 mm	1.6 mm	T 19 9 L R / E308LT	E308LT-1

Common European Wire Classifications

Mild Steel

• G3Si1 (EN ISO 14341-A): General purpose carbon steel wire with higher silicon content
• G2Si1 (EN ISO 14341-A): Similar to G3Si1 but with slightly lower silicon content
• G4Si1 (EN ISO 14341-A): Higher silicon content for better wetting

Stainless Steel

• G 19 9 L (EN ISO 14343-A): Equivalent to 308L, for welding 304/304L stainless steel
• G 19 12 3 L (EN ISO 14343-A): Equivalent to 316L, for welding 316/316L stainless steel
• G 22 9 3 N L (EN ISO 14343-A): Equivalent to 2209, for welding duplex stainless steel

Aluminum

• G Al 5 (EN ISO 18273): AlMg5, equivalent to ER5356
• G Al 4,5Mn (EN ISO 18273): AlMg4.5Mn, equivalent to ER5183
• G Al Si5 (EN ISO 18273): AlSi5, equivalent to ER4043

Wire Diameter Conversion

European (mm)	US (AWG/inches)
0.6 mm	0.024″ (23 AWG)
0.8 mm	0.030″ (21 AWG)
1.0 mm	0.040″ (19 AWG)
1.2 mm	0.045″ (18 AWG)
1.6 mm	0.062″ (14 AWG)
2.0 mm	0.078″ (12 AWG)
2.4 mm	0.094″ (10 AWG)
3.2 mm	0.125″ (8 AWG)

Material Thickness Conversion

European (mm)	US (inches)
0.6 mm	0.024″
0.8 mm	0.032″
1.0 mm	0.040″
1.6 mm	1/16″
2.0 mm	5/64″
2.4 mm	3/32″
3.2 mm	1/8″
4.0 mm	5/32″
4.8 mm	3/16″
6.4 mm	1/4″
9.5 mm	3/8″
12.7 mm	1/2″