Antibacterial stainless steel

Antibacterial stainless steel, as the name suggests, is a stainless steel that has a killing effect on bacteria. The killing rate of antibacterial stainless steel on Escherichia coli and Staphylococcus aureus is more than 99%, and it also has significant killing effect on other bacteria such as candida albicans and cumulus, showing excellent broad-spectrum antibacterial property and antibacterial durability. The testing of the National Institute for Drug and Biological Products Inspection shows that antibacterial stainless steel fully meets the national technical standards in terms of toxicity and human safety. While endows stainless steel with antibacterial properties, the mechanical, corrosion resistance, hot and cold processing, welding and other properties of the material are equivalent to the original stainless steel.

Precipitation hardening stainless steel

It has good formability and good weldability, and can be used as ultra-high strength materials in the nuclear industry, aviation and aerospace industry.

According to the composition can be divided into Cr series (400 series), CR-Ni series (300 series), CR-Mn-Ni (200 series), heat-resistant chromium alloy steel (500 series) and precipitation hardening series (600 series).

200 Series: Chrome-Manganese-nickel

201,202, etc. : Manganese instead of nickel, poor corrosion resistance, widely used as a cheap substitute for 300 series in China

300 Series: Chromium-nickel austenitic stainless steel

301: Good ductility, used for molding products. It can also be quickly hardened by machining. Good weldability. The wear resistance and fatigue strength are better than 304 stainless steel.

302: Corrosion resistance is the same as 304, and the strength is better because the carbon content is relatively high.

303: By adding a small amount of sulfur and phosphorus to make it easier to cut than 304.

304: general purpose model; 18/8 stainless steel. Products such as: corrosion resistant containers, tableware, furniture, railings, medical equipment. The standard ingredient is 18% chromium and 8% nickel. Stainless steel that is non-magnetic and cannot change its metallographic structure by heat treatment. The GB brand is 06Cr19Ni10.

304 L: the same characteristics as 304, but low carbon, so more corrosion resistance, easy heat treatment, but poor mechanical properties for welding and not easy to heat treatment products.

304 N: With the same characteristics as 304, it is a nitrogenous stainless steel, and nitrogen is added to improve the strength of steel.

309: Compared with 304 has better temperature resistance, temperature resistance up to 980℃.

309S: With a large amount of chromium, nickel, so good heat resistance, oxidation resistance, products such as: heat exchanger, boiler components, jet engine.

310: Excellent high temperature oxidation resistance, maximum operating temperature 1200℃.

316: After 304, the second most widely used steel grade, mainly used in the food industry, watch jewelry, pharmaceutical industry and surgical equipment, adding molybdenum element to make it obtain a special structure resistant to corrosion. Because it has better resistance to chloride corrosion than 304, it is also used as "Marine steel". SS316 is commonly used in nuclear fuel recovery units. Grade 18/10 stainless steel is also usually suitable for this application level.

316L: Low carbon so more corrosion resistance, easy heat treatment, products such as: chemical processing equipment, nuclear power generators, refrigerant storage tank.

321: In addition to the addition of titanium to reduce the risk of corrosion of the material weld, other properties are similar to 304.

347: Adding stabilizing element niobium, suitable for welding aviation equipment parts and chemical equipment.

400 series: Ferritic and martensitic stainless steel, no manganese, can replace 304 stainless steel to a certain extent

408: Good heat resistance, weak corrosion resistance, 11% Cr, 8% Ni.

409: Cheapest model (Anglo-American), commonly used as an automobile exhaust pipe, ferritic stainless steel (chromium steel).

410: Martensite (high strength chromium steel), good wear resistance, poor corrosion resistance.

416: The addition of sulfur improves the processing performance of the material.

420: "cutting tool grade" martensitic steel, similar to Brinell high chromium steel this earliest stainless steel. Also used in surgical knives, can be made very bright.

430: Ferritic stainless steel, used for decoration, such as car accessories. Good formability, but poor temperature resistance and corrosion resistance.

440: high-strength cutting tool steel, slightly higher carbon content, after appropriate heat treatment can obtain high yield strength, hardness can reach 58HRC, belongs to the hardest stainless steel. The most common example is the "razor blade". There are three common models: 440A, 440B, 440C, and 440F (easy to process).

500 series: Heat-resistant chrome alloy steel.

600 Series: Martensitic precipitation-hardened stainless steel.

Stainless steel mesh

Stainless steel mesh is mainly used for filtering products, also known as stainless steel filter.

Material: SUS201, 202, 302, 304, 316, 304L, 316L, 321 stainless steel wire, etc.

Weaving: plain, twill and dense weave.

Mesh number: stainless steel wire mesh specifications 1 mesh -635 mesh. The mat weave can reach 2800 mesh.

Uses: stainless steel mesh and other wire braided mesh is mainly used for acid and alkali environmental conditions screening and filtration, petroleum industry for mud mesh, chemical fiber industry for screening mesh, electroplating industry for pickling mesh, gas, liquid filtration and other media separation.

Mesh belt

Classified by name: stainless steel mesh belt, conveyor belt, metal conveyor belt, stainless steel conveyor belt, metal mesh belt, metal conveyor belt, stainless steel transmission belt, metal transmission belt and so on.

Classification by use: widely used in the glass products industry annealing grate belt, grate belt and so on. Food processing industry, dehydrated vegetables, quick-frozen food single freezer before processing network belt, chain network. Powder metallurgy, metal heat treatment, quenching, sintering, brazing, roasting, bright, black, bearing, carburizing high temperature grate belt, baffle-type grate belt, coating drying line conveyor belt, foam nickel reduction production line net belt, cleaning machine, elevator, dryer, dryer, curing grate belt. Each conveying process chain network, network belt.

Classified by material: 1cr13 mesh belt, 201 mesh belt, 304 mesh belt, 316 mesh belt, etc.

Classification by shape: herringbone mesh belt, B mesh belt, diamond mesh belt, horseshoe mesh belt, chain conveyor belt, glasses mesh belt, chain plate mesh belt, ball mesh belt

Expansion of stainless steel products: stainless steel mesh belt, mesh belt, conveyor mesh belt, metal mesh belt, high temperature mesh belt, Great Wall mesh belt, B mesh belt, stainless steel jewelry, all products in the expansion are made of stainless steel wire, stainless steel plate.

magnetism

Austenite is non-magnetic or weakly magnetic, while martensite and ferrite are magnetic. After cold processing, the structure of austenite will also be transformed to martensite, and then the magnetism will become larger. Therefore, the method of identifying the merits and falsities of stainless steel through magnet adsorption in life is one-sided and wrong.

Stainless steel surface finish grade

Original surface: NO.1 surface treated with heat treatment and pickling after hot rolling. Generally used for cold rolling materials, industrial tanks, chemical industry equipment, etc., the thickness is from 2.0MM-8.0MM.

Blunt surface: NO.2D cold rolling after heat treatment, pickling, its material is soft, the surface is silver-white luster, for deep stamping processing, such as automotive components, water pipes and so on.

Fog surface: NO.2B cold rolling after heat treatment, pickling, and then finish rolling processing to make the surface for moderate brightness. Because the surface is smooth, easy to re-grind, make the surface more bright, widely used, such as tableware, building materials and so on. Almost all applications are satisfied with surface treatments that improve mechanical properties.

Coarse sand NO.3 Grinding products with No. 100-120 grinding belt. Has a better gloss, with discontinuous coarse grain. Used for interior and exterior decoration materials, electrical products and kitchen equipment, etc.

Fine sand: NO.4 Grinding products with 150-180 particle size grinding belt. Has a better gloss, with discontinuous coarse lines, stripes thinner than NO.3. Used for bath, interior and exterior decoration materials, electrical products, kitchen equipment and food equipment, etc.

#320 Products grinding with No. 320 grinding strip. Has a better gloss, with discontinuous coarse lines, stripes thinner than NO.4. Used in bath, building interior and exterior decoration materials, electrical products, kitchen equipment and food equipment.

HAIRLINE: HLNO.4 Continuous grinding of the appropriate granularity of the polishing belt to produce the grinding pattern of the product (subdivision 150-320). Mainly used in building decoration, elevator, building doors, panels, etc.

Bright surface: BA after cold rolling with bright annealing, and through the smooth product. Good surface gloss and high reflectivity. A mirror-like surface. Used in household appliances, mirrors, kitchen equipment, decorative materials, etc.