GEN 309LMO Overview
GEN 309LMO is similar to ER309LMo a with lower chromium and higher nickel content which is typically used
to weld type 316 clad steels on the first pass in cladding steel as well as to weld dissimilar metals such as molybdenum-bearing stainless steels to carbon or low alloy steels.
Download GEN 309LMO Data Sheet
AWS Chemical Composition (Typical)
| %C |
%Cr |
%Ni |
%Mo |
%Mn |
| 0.03 max |
20.5 – 21.5 |
14.2 – 15.0 |
2.0 – 3.0 |
1.5 – 2.25 |
| %Si |
%P |
%S |
%Cu |
| 0.30 – 0.60 |
0.025 max |
0.005 – 0.02 |
0.30 max |
Typical Weld Metal Mechanical Properties
| Yield Strength |
56,000 psi |
| Tensile Strength |
85,000 psi |
| Elongation |
35 % |
Typical Welding Parameters
| Process |
Diameter |
Voltage |
Amperage |
Gas/Flux |
| TIG (GTAW) |
1/16” 1.6 mm |
14 – 17 |
90 – 130 |
100% Ar |
| TIG (GTAW) |
3/32” 2.4 mm |
15 – 20 |
120 – 175 |
100% Ar |
| MIG (GMAW) |
.035” 0.9 mm |
29 – 33 |
160 – 190 |
98%Ar – 2%O2 |
| MIG (GMAW) |
.045” 1.1 mm |
29 – 33 |
180 – 220 |
98%Ar – 2%O2 |
| Sub Arc (SAW) |
.093” 2.4 mm |
28 – 33 |
250 – 450 |
|
| Sub Arc (SAW) |
.125” 3.2 mm |
29 – 34 |
300 – 500 |
|
