Stainless steel square bar is a bar with a square cross section, usually made of austenitic stainless steel (such as 304, 316) or martensitic stainless steel (such as 410, 420).
It has excellent corrosion resistance, high strength and good processing performance, and is suitable for manufacturing mechanical parts, structural parts and decorative parts.

Looking for something that combines strength and versatility? Check out our high-quality stainless steel square bars. Perfect for both structural and decorative projects, these bars are made from top-grade 304 and 316 stainless steel, giving you excellent corrosion resistance, durability, and mechanical features that beat out regular steel options. 

What’s great about these square bars? Well, they’ve got precise 90-degree angles and uniform measurements all along, so everything fits together just right—no surprises. Their square shape also adds extra torsional strength and load capacity, making them a perfect choice for building frameworks, machinery parts, architectural details, or industrial equipment. 

We’ve got sizes ranging from 1/4 inch up to 4 inches, and finishes like mill, polished, or brushed—so you can pick what works best for your project. Plus, they meet all the necessary standards (ASTM A276 and ASME SA479) and are easy to weld and machine, making customization a breeze.