Performance characteristics and uses of stainless steel of different materials
304 stainless steel: has good corrosion resistance, heat resistance, low temperature strength and mechanical properties, good hot workability such as stamping, bending, and no heat treatment hardening. Uses: tableware, cabinets, boilers, auto parts, medical appliances, building materials, food industry.
310 310S stainless steel: high temperature resistance, generally used in boilers and automobile exhaust pipes, and other properties are general.
303 stainless steel: By adding a small amount of sulfur and phosphorus, it is easier to cut than 304 stainless steel. Other properties are similar to those of 304 stainless steel seamless pipe.
302 stainless steel: 302 stainless steel rods are widely used in auto parts, aviation and aerospace hardware tools, and chemicals. The details are as follows: handicrafts, bearings, sliding flowers, medical instruments, electrical appliances, etc. Features: 302 stainless steel ball belongs to austenitic steel, which is close to 304, but the hardness of 302 is higher, HRC≤28, and it has good rust and corrosion resistance.
301 stainless steel: good ductility, used for forming products. It can also be quickly hardened by mechanical processing and has good weldability. Abrasion resistance and fatigue strength are better than 304 stainless steel pipe.
202 stainless steel: belongs to chromium-nickel-manganese austenitic stainless steel, with better performance than 201 stainless steel.
201 stainless steel: belongs to chromium-nickel-manganese austenitic stainless steel with relatively low magnetic properties.
410 stainless steel: belongs to martensite (high-strength chromium steel), with good wear resistance and poor corrosion resistance.
420 stainless steel: “cutting tool grade” martensitic steel, similar to the earliest stainless steel such as Brinell high chromium steel. It is also used for surgical knives, which can be very bright.
304L stainless steel: As a low-carbon 304 steel, in general, its corrosion resistance is similar to that of 304, but after welding or stress relief, its resistance to intergranular corrosion is excellent, and it can maintain good resistance without heat treatment. The corrosion resistance.
Properties of difference
- Ferritic stainless steel. It contains 12%～30% chromium. Its corrosion resistance, toughness and weldability increase with the increase of chromium content, and its resistance to chloride stress corrosion is better than other types of stainless steel.
- Austenitic stainless steel. It contains more than 18% chromium, and also contains about 8% nickel and a small amount of molybdenum, titanium, nitrogen and other elements. Good overall performance, resistant to corrosion by various media.
- Austenitic-ferritic duplex stainless steel. It has the advantages of austenitic and ferritic stainless steel, and has superplasticity.
- Martensitic stainless steel. High strength, but poor plasticity and weldability.
