ER309L SS MIG WIRE | FEATURES

- ER309L is the same as ER309, except for the carbon content.
- Low carbon (0.03% maximum) in this filler metal reduces the possibility of intergranular carbide precipitation. This increases the resistance to intergranular corrosion without the use of stabilizers such as niobium or titanium.
- Strength of this low-carbon alloy, however, may not be as great at elevated temperatures as that of the niobium- stabilized alloys or ER309.
- Welding process of ER309L SS MIG wire applied to MIG(Metal Inert Gas Welding) or GMAW(Gas Metal Arc Welding).
SPECIFICATION CONFORMANCES
AWS: A5.9/A5.9M: ER309L
UNS Number: S30983
BS EN ISO 14343A: 23 12 L
WELDING POSITIONS
F,V,OH,H
TYPICAL APPLICATION
- ER309L SS MIG wire is used for welding stainless steels, such as 309S and similar base metal.
- Nuclear power plant components, maintenance and construction
- Meets the low cobalt levels typically required in the nuclear industry
- Pressure Vessels
SHIELDING GAS
98% Argon+2% O2
WIRE COMPOSITION – As Required As per AWS A5.9/A5.9M
Alloy Type | %C | %Cr | %Ni | %Mo | %Mn | %Si | %P | %S | %N | %Cu |
---|---|---|---|---|---|---|---|---|---|---|
ER309L | 0.03max | 23.0-25.0 | 12.0-14.0 | 0.75max | 1.0-2.5 | 0.30-0.65 | 0.03max | 0.03max | – | 0.75max |
Typical Results | 0.016 | 23.3 | 12.8 | 0.52 | 1.8 | 0.052 | 0.013 | 0.014 | – | 0.48 |
DIAMETER
INCH | 0.023” | 0.030” | 0.035” | 0.040” | 0.045” | 0.062” |
---|---|---|---|---|---|---|
MM | 0.6 | 0.8 | 0.9 | 1.0 | 1.2 | 1.6 |
Standard Package Dimensions and Weights
Product | Spool Diameter(in) | Spool Diameter(mm) | Nomimal Weight(lbs) | Nominal Weight(kg) |
---|---|---|---|---|
Spools | 4 | 100 | 1-1/2, 2-1/2 | 0.7, 1.1 |
8 | 200 | 10 | 4.5 | |
12 | 300 | 25, 33 | 11.4, 15 | |
14 | 350 | 50 | 22.8 |
*Net weights shall be within ±10% of the nominal weight.
TYPICAL MECHANICAL PROPERTIES (As Welded)
AWS No. | Tensile Strength, min(ksi) | Tensile Strength, min(MPa) | Elongation, min(%) | Heat Treatment |
---|---|---|---|---|
ER309L | 75 | 520 | 30 | None |
Available Diameters MIG with Operating Range in Amps
Diameter(inch) | Diameter(mm) | Amps(A) |
---|---|---|
0.023” | 0.6 | 35 – 70 |
0.030” | 0.8 | 50 – 100 |
0.035” | 0.9 | 160 – 210 |
0.045” | 1.2 | 180 – 250 |
MIG SPOOL DIMENSIONS

Dimensions of 4, 8 and 12 in [100, 200 and 300 mm] Standard Spools | |||||||||
Type | Spools Details | 4 in [100mm] | 8 in [200mm] | 12 in [300mm] | 14 in [350mm] | ||||
inch | mm | inch | mm | inch | mm | inch | mm | ||
A | Diameter, max | 4.0 | 102 | 8.0 | 203 | 12 | 305 | 14 | 355 |
B | Width Tolerance | 1.75 ±0.03 |
46 +0,-2 |
2.16 ±0.03 |
56 +0,-3 |
4.0 ±0.06 |
103 +0,-3 |
4.0 ±0.06 |
103 +0,-3 |
C | Diameter Tolerance | 0.63 +0.01.-0 |
16 +1,-0 |
2.03 +0.06,-0 |
50.5 +2.5,-0 |
2.03 +0.06,-0 |
50.5 +2.5,-0 |
2.03 +0.06,-0 |
50.5 +2.5,-0 |
D | Diameter between Axes Tolerance | — — |
— — |
1.75 ±0.02 |
44.5 ±0.5 |
1.75 ±0.02 |
44.5 ±0.5 |
1.75 ±0.02 |
44.5 ±0.5 |
E | Diameter Tolerance | — — |
— — |
0.44 +0,-0.06 |
10 +1,-0 |
0.44 +0,-0.06 |
10 +1,-0 |
0.44 +0,-0.06 |
10 +1,-0 |