SS Welding Rod E309 Electrode
Send Inquiry
Product Introduction
| Element | Content Range (Mass Fraction, %) | Core Function |
|---|---|---|
| Chromium (Cr) | 22.0 - 25.0 | Forms a dense Cr₂O₃ oxide film, which is the core element for oxidation resistance and uniform corrosion resistance; enhances high-temperature creep resistance. |
| Nickel (Ni) | 12.0 - 14.0 | Stabilizes the austenitic structure, preventing martensitic transformation of the weld after welding (to avoid embrittlement); assists in improving corrosion resistance and low-temperature toughness. |
| Carbon (C) | ≤ 0.15 | Controlling carbon content can reduce "carbide precipitation" (e.g., Cr₂₃C₆) at high temperatures, avoiding the risk of intergranular corrosion; meanwhile, it ensures a certain strength of the weld. |
| Manganese (Mn) | 1.0 - 2.5 | Deoxidizes and desulfurizes, improving weld fluidity; assists in stabilizing austenite and enhancing weld toughness. |
| Silicon (Si) | ≤ 0.90 | Acts as a deoxidizer to reduce pores in the weld; however, excessive content will decrease weld plasticity, so an upper limit is required. |
| Sulfur (S) | ≤ 0.030 | A harmful impurity that easily causes hot cracking of the weld and must be strictly limited. |
| Phosphorus (P) | ≤ 0.040 | A harmful impurity that easily causes cold cracking and intergranular embrittlement of the weld and must be strictly |
Hot Tags: ss welding rod e309 electrode, China, manufacturers, suppliers, factory, company, wholesale, discount, buy, low price, high quality, products
Previous
E309 Series MaterialsYou Might Also Like
Send Inquiry