Steel of Polish Welding
Steel welding is an extremely popular and important form of fabrication, and there are several varieties of steel specifically designed for welding. One of these is Polish welding steel, which is a grade of low-carbon steel that is especially used in heavy structural welding. Polish welding steel is a structural steel quality grade used in applications where greater than average strength is required. It is known for its good strength, ductility, weldability, and ability to shape cold.
Polish welding steel is made up of a blend of different elements such as manganese, phosphorus, sulfur, arsenic and silicon. It is classified as a low-carbon steel, and is therefore not as strong as a medium- or high-carbon steel grade. The relatively low level of carbon means that a small amount of additional strength can be added by alloying additional elements like manganese and phosphorus. These additional elements allow Polish welding steel to increase its strength through hardenability.
The most common grade of Polish welding steel is Grade 17G2S. It has a yield strength of 460MPa and is commonly used for bridge and ship-building welds. Grade 17G2S has good levels of toughness and ductility. It is very popular as a structural steel because it can easily be welded with most of the conventional welding processes.
Grade 15G2S is another grade of Polish welding steel that is popular for welds on medium weight structures. It has a yield strength of 410MPa and is known for its ability to work harden. Grade 15G2S is also very resistant to fatigue cracking and corrosive environments, making it a good choice for welds that need to endure harsh conditions.
Grade 14G2S is one of the hardest grades of Polish welding steel, achieving a yield strength of 390MPa and a tensile strength of 580-620MPa. It is known for being very hard and strong, but it is not as ductile as the lower grades. Grade 14G2S is best suited for welds on heavy machinery and equipment.
For the highest levels of strength, Grade 21G2S is the toughest grade of Polish welding steel. It achieves a yield strength of 530MPa with a tensile strength of 710-750MPa. Grade 21G2S is often used for very thick welds, as well as in applications where welding needs to be extra strong.
No matter what grade of Polish welding steel you are looking for, you are sure to find one to fit your project’s needs. Polish welding steel is a very popular choice for welds on heavy structures, and it works well for projects that require increased strength and durability. It is resistant to fatigue cracking and corrosive environments, and it is easy to work with and weld. So, if you need a weld that can stand up to whatever you throw at it, consider Polish welding steel.
