304 stainless steel flat bar has a thin chromium film formed on the surface because the stainless steel contains chromium. This film isolates the oxygen from the intrusion of the steel and acts as a corrosion resistance. 304 stainless steel flat bar is generally divided into hot-rolled flat steel and cold-drawn flat bar. The general delivery state of hot-rolled 304 stainless steel flat bar is pickling, and the general delivery state of cold-drawn 304 stainless steel flat bar is wire drawing and polishing. Stainless steel flat bar is widely used in various building structures and engineering structures, such as building beams, bridges, power transmission towers, lifting and transporting machinery, ships, industrial furnaces, reaction towers, container racks and warehouse shelves.

Stainless steel square bar is a kind of steel material with good corrosion resistance, heat resistance, low temperature strength and mechanical properties. Square steel is divided into hot-rolled square steel and cold-drawn square steel. Hot-rolled square steel refers to steel that is rolled or processed into a square section. Square steel can be divided into two types: hot-rolled and cold-rolled; hot-rolled square steel has a side length of 5-250mm, and cold-drawn square steel has a side length of 3-100mm. Cold-drawn square steel refers to cold-drawn steel with a square forging shape. Cold-drawn steel uses cold extrusion technology to pull out various high-precision, smooth-surface round steel, square steel, flat steel, and hexagonal steel through precise molds. And other special-shaped steel.

17-4 is a chromium-nickel-copper precipitation hardening stainless steel used for applications requiring high strength and moderate level of corrosion resistance. APPLICATIONS: Aircraft and gas turbines Nuclear reactor Paper mills Oil Fields Chemical process components

316 and 316/L (UNS S31600 & S31603) are molybdenum-bearing austenitic stainless steels. The 316/316L stainless steel bar, rod and wire alloy also offer higher creep, stress to rupture and tensile strength at elevated temperatures, in addition to excellent corrosion resistance and strength properties. 316/L refers to the lower carbon content to allow for greater corrosion protection when welding. Austenitic steels have austenite as their primary phase (face centered cubic crystal). These are alloys containing chromium and nickel (sometimes manganese and nitrogen), structured around the Type 302 composition of iron, 18% chromium, and 8% nickel. Austenitic steels are not hardenable by heat treatment. The most familiar stainless steel is probably Type 304, sometimes called T304 or simply 304. Type 304 surgical stainless steel is austenitic steel containing 18-20% chromium and 8-10% nickel.