304 stainless steel is a general-purpose austenitic stainless steel containing 18% chromium and 8% nickel; 316L is an ultra-low carbon austenitic stainless steel with 2%-3% molybdenum added to 304. 304 stainless steel, with its outstanding corrosion resistance, precise etching processing characteristics, and stable and reliable mechanical strength, has become the ideal choice for manufacturing high-precision etched filters.
What are the main features of 304 and 316L stainless steel coils/strips?
Advantages of 304 stainless steel coils/strips:
Outstanding etching accuracy: 304 stainless steel not only has a uniform chemical composition distribution, but also has an excellent surface finish. During the etching process, it can precisely control the size of the holes, the spacing between the holes, and the porosity, and can produce precision filter membranes with a minimum hole diameter of 50 microns, fully meeting the strict requirements of fine filtration.
Outstanding corrosion resistance: Capable of withstanding the erosion of air, moisture, neutral solvents, and various organic chemical substances. It is highly suitable for performing filtration functions in general corrosive environments such as food processing, pharmaceutical production, and water treatment.
Balanced mechanical properties: It has certain strength and ductility. The etched filter is not easy to deform, can withstand the pressure difference during filtration, and is convenient for subsequent secondary processing such as bending and welding.
Economical applicability: Compared with 316L, it has lower cost. In scenarios where the corrosion requirements are not extreme, it can meet the production needs of etched filters with higher cost performance.
Advantages of 316L stainless steel coil/strip:
Outstanding corrosion resistance: 316L stainless steel, due to the addition of molybdenum, has superior resistance to pitting and crevice corrosion compared to 304 stainless steel, and can withstand the erosion of harsh environments such as strong acids and strong alkalis.It is suitable for etching filters in highly corrosive scenarios such as chemical, marine engineering, and medical.
Low carbon characteristics: The carbon content is ≤0.03%, and intergranular corrosion is not easy to occur after welding, ensuring that the etched filter still maintains overall corrosion resistance after welding and assembly, extending the service life.
Outstanding high-temperature stability: Even if in a high-temperature environment, 304 stainless steel can maintain stable mechanical strength and high etching accuracy, it is highly suitable for the production of high-temperature filtration equipment.
Outstanding biocompatibility: 304 stainless steel coil/strip meets the strict standards of medical-grade materials. It is not only non-toxic but also does not cause allergic reactions. It can be widely applied in the precise filtration scenarios of medical equipment, such as blood filtration and liquid drug filtration.
What other applications are there for 304 and 316L stainless steel coils?
In addition to being the core raw material for etching filters:
304 stainless steel is widely used in food processing equipment (such as storage tanks, pipelines), household kitchen utensils, architectural decoration, medical device housings, water purifier filter frames, etc.
316L stainless steel is commonly used in marine engineering, chemical reactors, pharmaceutical equipment, nuclear power equipment, high-end watch cases and other fields, which have extremely high requirements for corrosion resistance.
Where can I buy high-precision 304 and 316L stainless steel plates or strips for making etched filters?
Huali Steel provides high-quality 304 and 316L stainless steel coils/strips that meet a variety of industry standards such as ASTM, JIS, GB, etc. Ningbo Huali Steel Co.,Ltd provides high - quality 304 and 316L coil/strip stainless steel materials that meet different industry standards. With years of experience and commitment to customer satisfaction, the materials we provide ensure reliability, performance and value. Visit our website www.dhuali.com for more information and welcome to buy 304 and 316L stainless steel materials from us!
