RW 309 series is a stainless steel series for welding. They join stainless steels to carbon steels and other dissimilar materials. RW 309L supports corrosion resistance through its low carbon level. RW 309LSi improves fluidity, penetration, and bead appearance. RW 309Si suits heat-resistant steels and oxidizing gases, producing weld metal with approximately 8% ferrite. RW 309LMo targets improved pitting resistance in chloride environments through its molybdenum addition.
| Product | Nominal Composition | EN ISO 14343-B: 2017 | AWS A5.9-2017 Alloy Designation |
DIN Werkstoff Nr. |
|---|---|---|---|---|
| RW 309L | 23 12 L | SS309L | ER309L | 1.4332 |
| RW 309Si | - | SS309Si | ER309Si | (1.4829) |
| RW 309LSi | 23 12 L Si | SS309LSi | ER309LSi | 1.4332 |
| RW 309LMo | 23 12 2 L | - | - | (1.4459) |
| Element | RW 309L | RW 309Si | RW 309LSi | RW 309LMo |
|---|---|---|---|---|
| C | CRW 309L≤ 0,03 % | CRW 309Si≤ 0,12 % | CRW 309LSi≤ 0,03 % | CRW 309LMo≤ 0,03 % |
| Mn | MnRW 309L1,00-2,50 % | MnRW 309Si1,00-2,50 % | MnRW 309LSi1,00-2,50 % | MnRW 309LMo1,00-2,50 % |
| Si | SiRW 309L0,30-0,65 % | SiRW 309Si0,65-1,00 % | SiRW 309LSi0,65-1,00 % | SiRW 309LMo0,30-0,65 % |
| S | SRW 309L≤ 0,020 % | SRW 309Si≤ 0,030 % | SRW 309LSi≤ 0,020 % | SRW 309LMo≤ 0,020 % |
| P | PRW 309L≤ 0,030 % | PRW 309Si≤ 0,030 % | PRW 309LSi≤ 0,030 % | PRW 309LMo≤ 0,030 % |
| Cr | CrRW 309L23,0-25,0 % | CrRW 309Si23,0-25,0 % | CrRW 309LSi23,0-25,0 % | CrRW 309LMo21,0-25,0 % |
| Ni | NiRW 309L12,0-14,0 % | NiRW 309Si12,0-14,0 % | NiRW 309LSi12,0-14,0 % | NiRW 309LMo11,0-15,5 % |
| Mo | MoRW 309L≤ 0,30 % | MoRW 309Si≤ 0,75 % | MoRW 309LSi≤ 0,30 % | MoRW 309LMo2,00-3,50 % |
| Cu | CuRW 309L≤ 0,30 % | CuRW 309Si≤ 0,75 % | CuRW 309LSi≤ 0,30 % | CuRW 309LMo≤ 0,30 % |
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