What is self-shielded flux core wire?

Self-shielded flux-cored wires are often a substitute for stick electrodes for construction and other outdoor applications. They don't require an external shielding gas, and they weld faster than stick electrodes since the wires continually feed, allowing for greater

There are two types of flux-cored wire electrodes: gas-shielded and self-shielded. As its name implies, the gas-shielded type of flux-cored wire requires an external shielding gas. The self-shielded variety does not. The flux coating on gas shielded flux-cored wires solidifies faster than the molten weld material.