Chemical Composition And Functions Of E6013 Welding Core
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Product Introduction
| Element | Mass Fraction Range | Core Function & Impact |
|---|---|---|
| Carbon (C) | ≤0.12% | Low-carbon design: Reduces the hardening tendency of the weld to avoid cold cracking; prevents weld brittleness and porosity risks caused by excessive carbon. |
| Manganese (Mn) | 0.40-1.20% | Primary deoxidizer: Combines with oxygen (O) to form MnO (which enters the slag) to reduce porosity; also acts as a solid-solution strengthener to improve weld strength. |
| Silicon (Si) | ≤0.05% | Auxiliary deoxidizer: The content is extremely low (the electrode coating already provides sufficient deoxidation capacity), avoiding "silicon brittleness" caused by excessive silicon and ensuring weld toughness. |
| Sulfur (S) | ≤0.035% | Harmful element (strictly restricted): Prevents the formation of low-melting-point FeS (1190℃) with iron, avoiding "hot brittleness" and hot cracking of the weld. |
| Phosphorus (P) | ≤0.040% | Harmful element (strictly restricted): Prevents segregation at weld grain boundaries, avoiding "cold brittleness" (decreased low-temperature toughness) and cold cracking. |
| Other Elements (Cr, Ni, etc.) | ≤0.3% (trace) | Impurity-level content, with no significant impact on the chemical properties of the weld. |
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