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Why use 316L For Stainless Steel Water Pipes

Aug. 19, 2020

According to a report released by the World Health Organization, almost 1/10 of global diseases are related to water. So how can we drink healthy water? Start with the selection of high-quality water pipes. Stainless steel water pipes are currently recognized as the best direct drinking water delivery pipes on the market.


However, when users buy stainless steel water pipes, many people do not understand why stainless steel water pipes should choose 316L. In this regard, 316l stainless steel pipe manufacturer compare several common stainless steels on the market, and 316L stainless steel pipes themselves are 316 stainless steel pipes. Upgrade, naturally needless to say, then the following is mainly a comparison between 304 stainless steel and 316L stainless steel, we can take a look together


304 stainless steel is a common material in stainless steel, with a density of 7.93 g/cm3, which is also called 18/8 stainless steel in the industry. High temperature resistant to 800℃, with good processing performance and high toughness, it is widely used in industry and furniture decoration industry and food industry.

Common labeling methods on the market include 0Cr18Ni9 and SUS304, among which 0Cr18Ni9 generally means national standard production, 304 generally means ASTM standard production, and SUS 304 means Japanese standard production. 304 stainless steel is widely used in food utensils. There are many tools and products, and food can be directly contacted, so it is also called "food grade".


316L stainless steel is a material with lower carbon content than 304. Coupled with molybdenum (Mo) element, the corrosion resistance, temperature resistance, and compressive strength are greatly improved. The heat resistance can reach 1200-1300 degrees, and it can also be used normally at -40℃~120℃. Therefore, 316L stainless steel is mainly used in the food industry, clock accessories and other high-precision instrument accessories, pharmaceutical manufacturing industries and surgical instruments. 316L stainless steel is widely used in medical treatment, surgical instruments, and medical materials implanted in the human body. It is also one of the metal materials that can be implanted into the human body so far. 316L is usually called "medical grade".


Through the above explanation, the difference between 304 and 316L stainless steel is clear at a glance:

304 stainless steel: can resist chemical oxidation; 304 is a material that must be used in the national pressure cooker standard, and the standard material of stainless steel pressure cooker is 304 or more.

316L stainless steel: more durable and more corrosion-resistant, this stainless steel is called 18-10 stainless steel, which is medical stainless steel, and there is no metal ion precipitation.

316L Stainless Steel Pipes

316L Stainless Steel Pipes

To sum up:


First of all, 316L stainless steel contains Mo, which has better corrosion resistance than 304 stainless steel in high temperature environments, so in high temperature environments, engineers generally choose 316L material parts.


Secondly, there are differences between the two in terms of grades; 304 stainless steel corresponds to Chinese grade 0Cr18Ni9; 316L stainless steel corresponds to Chinese grade 0Cr17Ni12Mo2.


Third, 316L mainly reduces the Cr content and increases Mo2%~3%. Therefore, its corrosion resistance is stronger than that of 304, and it is suitable for use in chemical, seawater and other environments. Similarly, the cost of 316L is also higher than that of 304. Generally, 316L is used in places with higher requirements to replace 304!


With the continuous improvement of Chinese residents; environmental awareness and health concepts, more and more families need to choose higher-end and healthier domestic water systems to meet their high-quality life needs. For our physical and mental health, we recommend that you choose 316L stainless steel pipes, which are currently the best direct drinking water delivery pipes. 316L is also one of the metal materials that can be medically implanted into the human body. The inner wall does not scale, and can be used for long-term use to purify the water source, prevent secondary pollution of the water pipe, and ensure the health and sanitation of the family drinking water.


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