According to the processing method, stainless steel is divided into: pressure working steel and cutting steel; according to the structure characteristics, it is divided into five types: austenite type, austenite-ferrite type, ferrite type, martensitic type and precipitation hardening type. .


Stainless steel rods have broad application prospects and are widely used in hardware kitchenware, shipbuilding, petrochemicals, machinery, medicine, food, electricity, energy, construction and decoration, nuclear power, aerospace, military and other industries! Seawater equipment, chemical, dye, paper, oxalic acid, fertilizer and other production equipment; food industry, coastal facilities, ropes, CD rods, bolts, nuts.
Quality management: ISO9001:2000 quality management system certification, production license, etc.!
Remarks: Non-standard stainless steel rods of various materials and specifications can be customized.
Stainless steel rod material, application range, introduction to quality management
Material: 304, 304L, 321, 316, 316L, 310S, 630,
Common materials are 201, 202, 301, 304, 303, 316, 316L, 304L, 321, 2520, 1Cr13, 2Cr13, 3Cr13, dual-phase steel, antibacterial steel and other materials! Specifications are expressed in diameter, such as "50", which means round steel with a diameter of 50 mm. Round steel is divided into three types: hot rolled, forged and cold drawn. The size of hot rolled round bar is 5.5-250 mm.
Application range: petroleum, electronics, chemical industry, medicine, textile, food, machinery, construction, nuclear power, aerospace, military and other industries!
Quality management: ISO9001:2000 quality management system certification, production license, etc.!

According to the composition, it can be divided into Cr series (SUS400), Cr-Ni series (SUS300), Cr-Mn-Ni (SUS200) and precipitation hardening series (SUS600).

200 Series - Chromium-Nickel-Manganese Austenitic Stainless Steels
300 Series - Chromium-Nickel Austenitic Stainless Steels
301—Good ductility, used for molded products. Machine speed hardening is also possible. Good weldability. Wear resistance and fatigue strength are better than 304 stainless steel.
302-corrosion resistance is the same as 304, because the carbon content is relatively high and the strength is better.
303—By adding a small amount of sulfur and phosphorus to make it more machining.
304—that is, 18/8 stainless steel. The GB grade is 06Cr19Ni10.
309—has better temperature resistance than 304.
316 - After 304, the second most widely used steel grade, mainly used in the food industry and surgical equipment, adding molybdenum to obtain a special structure that is resistant to corrosion. Because of its better resistance to chloride corrosion than 304, it is also used as "marine steel". SS316 is usually used in nuclear fuel recovery units. Grade 18/10 stainless steels generally also meet this application level. [1] 
Model 321—Similar to 304 except that the risk of material weld corrosion is reduced due to the addition of titanium.
400 Series - Ferritic and Martensitic Stainless Steels
408—Good heat resistance, weak corrosion resistance, 11% Cr, 8% Ni.
409—The cheapest model (British and American), usually used as a car exhaust pipe, is a ferritic stainless steel (chrome steel).
410—Martensitic (high-strength chromium steel), with good wear resistance and poor corrosion resistance.
416 - The addition of sulfur improves the processing properties of the material.
420 - "cutting grade" martensitic steel, the earliest stainless steel similar to Brinell high chromium steel. Also used in surgical knives, can do very bright.
430—ferritic stainless steel, used for decoration, such as for car accessories. Good formability, but poor temperature and corrosion resistance.
440—High-strength cutting tool steel with slightly higher carbon content, high yield strength can be obtained after proper heat treatment, and hardness can reach 58HRC, which is one of the hardest stainless steels. The most common application example is "razor blades". There are three commonly used models: 440A, 440B, 440C, and 440F (easy to process).
500 Series - Heat Resistant Chromium Alloy Steel.
600 Series—Martensitic precipitation hardening stainless steels.
630—The most commonly used type of precipitation hardening stainless steel, usually also called 17-4; 17%Cr, 4%Ni.