Stainless steel resists corrosion, pitting, rusting, and wear. It is also one of the strongest metals used in construction. Due to its excellent corrosion resistance, stainless steel ensures structural components maintain the integrity of the engineering design. Chromium-containing stainless steel combines mechanical strength with high ductility, making it easy to machine and fabricate, thus meeting the needs of architects and structural designers.
Product Code Group
Martensitic precipitation-hardening stainless steel. It boasts excellent formability and good weldability, making it suitable for use as ultra-high-strength material in the nuclear and aerospace industries.
By composition, they can be divided into Cr series (400 series), Cr-Ni series (300 series), Cr-Mn-Ni series (200 series), heat-resistant chromium alloy steel (500 series), and precipitation-hardening series (600 series).
200 Series: Chrome-Molybdenum-Nickel Austenitic Stainless Steel
300 Series: Chrome-Nickel Austenitic Stainless Steel
301: Excellent formability for shaped products. Can be rapidly hardened through mechanical processing. Good weldability. Higher wear resistance and fatigue strength than 304 stainless steel.
302: Corrosion resistance similar to 304, with higher carbon content for better strength.
303: Adds a small amount of sulfur and phosphorus to make it more machinable than 304.
304: Currently commonly used type, also known as 18/8 stainless steel. The GB brand number is 06Cr19Ni10.
309: Offers better temperature resistance compared to 304.
321: In addition to the reduced risk of weld seam corrosion due to the addition of titanium, its other properties are similar to 304.
347: Add stabilizing element niobium, suitable for welding parts and chemical equipment.
400 Series: Ferritic and Martensitic Stainless Steel.
408: Good heat resistance, slight corrosion resistance, 11% Cr, 8% Ni.
409: Inexpensive model (in the UK and US), commonly used for car exhaust systems, belongs to ferritic stainless steel (chrome steel).
410: Martensitic (high-strength chromium steel), good wear resistance, poor corrosion resistance.
