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What is the difference between sanitary round tube 304 and 316L stainless steel

Views: 0     Author: Miss Lin     Publish Time: 2025-04-01      Origin: Site

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What is the difference between sanitary round tube 304 and 316L stainless steel



Chemical composition

304 stainless steel: contains 18% chromium and 8% nickel, suitable for general corrosive environments.

316L stainless steel: contains 17%~20% chromium, 10%~14% nickel, and 2%~3% molybdenum. The addition of molybdenum enhances its corrosion resistance.


Application Fields


Application areas of 304 stainless steel

Food processing industry: 304 stainless steel is a commonly used material for food processing equipment, widely used in food storage tanks, conveying pipelines, mixing equipment, etc. Its excellent corrosion resistance and non-toxic properties can ensure the safety and hygiene of food.

Pharmaceutical industry: In pharmaceutical equipment, 304 stainless steel can be used to manufacture general drug storage tanks, conveying pipelines, etc. It can meet the basic hygiene requirements of the pharmaceutical industry for materials.

In the field of architectural decoration, 304 stainless steel is commonly used for railings, handrails, elevator decorations, etc. due to its corrosion resistance and aesthetic appeal. These parts have relatively low hygiene requirements.

Household goods: 304 stainless steel is widely used in the manufacturing of kitchen utensils (such as pots, bowls, plates), faucets, bathroom products, etc. These products need to meet the hygiene and durability requirements for daily use.

Application areas of 316L stainless steel

Food processing industry: 316L stainless steel is suitable for food processing equipment that requires higher hygiene and corrosion resistance, such as dairy fermentation tanks, beer brewing pipelines, etc. It has a smooth surface and strong corrosion resistance, which can effectively prevent bacterial growth.

Pharmaceutical industry: 316L stainless steel is one of the preferred materials for pharmaceutical equipment, commonly used in the manufacture of reaction vessels, infusion pipelines, and inner liners for pharmaceutical equipment. Its excellent corrosion resistance and biocompatibility can ensure the quality and safety of drugs.

In the field of medical devices, 316L stainless steel is widely used in medical devices such as surgical instruments, implants, medical equipment frames, etc. Its non-magnetic, corrosion-resistant, and excellent biocompatibility make it an ideal material in the medical field.

Marine Engineering and Shipbuilding: 316L stainless steel performs well in marine environments and is commonly used in ship seawater cooling systems, offshore platform supports, seawater desalination equipment, and more. Its resistance to chloride ion corrosion can effectively resist the erosion of seawater.

Chemical and energy industries: In chemical equipment, 316L stainless steel can be used to manufacture pipelines, reaction vessels, etc. for storing and transporting corrosive media. Its corrosion resistance and high temperature stability make it widely used in the chemical and energy fields.

High end architectural decoration: The corrosion resistance and aesthetics of 316L stainless steel make it also applicable in high-end architectural decoration, such as the curtain wall of seaside hotels and the decoration of airport terminals.

maceuticals where high corrosion resistance is required.



Mechanical properties

304 stainless steel: relatively low strength and hardness, with a yield strength of 205MPa.

316L stainless steel: It has high strength and hardness, with a yield strength of 200MPa, but its main advantage lies in corrosion resistance rather than mechanical strength.




Price

304 stainless steel: relatively low price.

316L stainless steel: Higher price mainly due to the addition of molybdenum.


Heat treatment requirements

304 stainless steel: prone to intergranular corrosion at high temperatures, usually requiring annealing treatment.

316L stainless steel: Due to its low carbon content, it has better resistance to carbide precipitation and generally does not require annealing treatment.


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