AWS ER308 is used to weld stainless steel and can be used in all welding positions. It is commonly used in the food processing, chemical processing, and pharmaceutical industries due to its corrosion resistance. It is also used in the petrochemical and power generation industries.
In general, the selection of a filler metal for SAW should be based on the base metal properties, the welding position, the service environment, and any code or specification requirements.
Characteristics:
( 1 ) The molten metal of XMS-308 is 20%Cr-9%Ni austenite structure.
( 2 ) It’s used to weld 18%Cr-8%Ni stainless steel, such as AISI 304、301、302、308,etc.
( 3 ) Stable arc，weld pass forming is beautiful，the molten metal contains appropriate ferrite, crack resistance is well.
One chemical composition of the weld metal sample (wt%)
（Shieding Gas：Ar+2%O2）
| C | Si | Mn | P | S | Cr | Ni |
| 0.04 | 0.34 | 1.82 | 0.012 | 0.009 | 20.11 | 10.30 |
One mechanical properties of the weld metal sample
（Shieding Gas：Ar+2%O2）
| Tensild Strength MPa |
Yield Strength MPa |
Elongation % |
| 580 | 420 | 44 |
The specifications of the product and welding condition (DC+)
| Dia (mm) Welding Condition |
0.8 | 0.9 | 1.0 | 1.2 | 1.4 | 1.6 | |
| Short Circuiting Transfer | Current A | 40 ~ 120 | 60 ~ 140 | 80 ~ 160 | 100 ~ 210 | — | — |
| Voltage V | 15 ~ 20 | 15 ~ 21 | 16 ~ 22 | 17 ~ 22 | — | — | |
| Spray Transfer | Current A | 160 ~ 210 | 170 ~ 260 | 180 ~ 280 | 200 ~ 300 | 210 ~ 320 | 220 ~ 330 |
| Voltage V | 24 ~ 28 | 24 ~ 30 | 24 ~ 30 | 24 ~ 30 | 24 ~ 32 | 24 ~ 32 | |
