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TIG Cored Wire for Stainless Steel BGS-F309L
Product Description BGS-F309L Core TIG Welding Wire for Stainless Steel Austenitic Type/Dissimilar Steels/No Back Argon Feed Complies with: • GB/T 17853 TS309L-R11 1 • AWS A5.22 R309LT1-5 • A5.22M R309LT1-5 • EN ISO 1...
Description
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Product Description
BGS-F309L
Core TIG Welding Wire for Stainless Steel
Austenitic type / for welding dissimilar steels / without argon supply from the back side
Meets the requirements:
• GB/T 17853 TS309L-R11 1
• AWS A5.22 R309LT1-5
• A5.22M R309LT1-5
• EN ISO 17633-A: T23 12LP11 1
• EN ISO 17633-B: TS309L-R11 1
Purpose
It is used for welding dissimilar joints of stainless steel with carbon or low-alloy steel, as well as for performing root layer welding of connections between pipelines made of carbon steel and austenitic stainless steel.
Characteristics
1.The main composition is low-carbon alloy 22%Cr-12%Ni;
2. Does not require argon supply from the reverse side, allows you to obtain a high-quality weld;
3. The weld has an aesthetic appearance, slag can be easily removed and has excellent welding properties.
Chemical composition
| Alloy, wt.% | C | Mn | Si | Cr | Ni | Mo | P | S | Cu |
| GB/T standard | 0.03 | 0.5~2.5 | 1.2 | 22.0~25.0 | 12.0~14.0 | 0.5 | 0.04 | 0.03 | 0.5 |
| AWS Standard | 0.03 | 0.5~2.5 | 1.2 | 22.0~25.0 | 12.0~14.0 | 0.5 | 0.04 | 0.03 | 0.5 |
| Typical value | 0.02 | 1.30 | 0.50 | 24.6 | 12.95 | 0.02 | 0.019 | 0.003 | 0.010 |
Mechanical properties
| Mechanical properties | Yield strength, MPa | Tensile strength, MPa | Elongation, % | Impact strength, J/℃ | Heat treatment ℃×h |
| GB/T standard | — | 520 | 30 | — | — |
| AWS Standard | — | 520 | 30 | — | — |
| Typical value | — | 630 | 40 | — | — |
Welding parameters: (DC-)
| Diameter, mm | Sheet thickness, mm | Root gap, mm | Welding current, A |
| 2.4×915 | 2~4 | 2.0 | 80~100 |
| 2.4×915 | 5~9 | 2.5 | 90~120 |
| 2.4×915 | ≥10 | 3.0 | 90~130 |
Precautions
1.Selection of power supply: DC-; welding current should be selected in accordance with the thickness of the sheet;
2. Shielding gas: pure argon;
3.Gas flow: 10~15L/min;
4.Perform processing of a suitable edge cutting shape;
5. To ensure complete penetration of the reverse weld and sufficient penetration depth, it is necessary to leave a root gap;
6.When welding, a small amount of filler material should be used with fast filling, and the moving distance should be short. Particular attention must be paid to the transfer speed so that the welding wire is completely melted, otherwise there may be unwelded areas that will lead to the formation of defects.
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