Core Chemical Composition Of E7024 Electrode

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Product Introduction

Element	Content Range	Main Functions
Carbon (C)	≤0.12%	Controls the weld strength, prevents increased cold cracking susceptibility caused by excessive content, and ensures weldability.
Manganese (Mn)	1.00%-1.60%	Acts as a deoxidizer, improves weld toughness and crack resistance, and enhances weld strength.
Silicon (Si)	0.50%-0.90%	Serves as a deoxidizer to reduce weld porosity and improve weld density; also helps stabilize the arc.
Nickel (Ni)	0.50%-1.00%	(Key alloying element) Enhances the low-temperature toughness of the weld, ensuring good impact performance even at low temperatures.
Chromium (Cr)	≤0.20%	Added in trace amounts to refine grain structure; auxiliary improves weld corrosion resistance and strength (not a primary function).
Molybdenum (Mo)	≤0.30%	Added in trace amounts to improve the high-temperature strength and creep resistance of the weld, and enhance hardenability.
Sulfur (S)	≤0.035%	Harmful impurity; its content is strictly limited to avoid weld hot cracking (hot brittleness).
Phosphorus (P)	≤0.035%	Harmful impurity; its content is strictly limited to prevent weld cold brittleness (low-temperature brittleness).

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