Stainless Steel Foil

Stainless steel foils are thin strips of stainless steel that are less than 0.2 mm in thickness and less than 300 mm in width.

Stainless steel foils offer a variety of advantages, including chemical stability, high strength-to-weight ratio, electrical insulation and corrosion resistance.

Stainless steel foil is used in the production of heat exchangers, capacitors and fuel cells; as well as in medical equipment and food processing machinery.

Stainless steel foils are a versatile material with many advantages. Its high corrosion resistance, good thermal and electrical conductivities and its ductility makes it an excellent choice for a wide range of applications.

Stainless steel foil is available in several different grades. These include austenitic series, ferritic series, martensitic series, duplex and super duplex series. Each grade has different alloying elements that contribute to the properties of the foil.

The most common grades of stainless steel foils are 304 and 316. These grades are supplied in thicknesses ranging from 0.009mm to 0.3mm. Other grades of stainless steel foil are also available upon request including 409, 430 and duplex 2205.

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1.What are 301 stainless steel foils?

301 stainless steel foils are the types of austenitic stainless steels foils. They are the alloys of iron, chromium, nickel and manganese with a crystalline structure. This crystal structure makes it an extremely strong and ductile metal.

301 stainless steel foil is available in full hard, half hard and quarter hard condition.

301 stainless steel foil is used in a variety of applications including food processing equipment, railway cars, conveyors and architectural trim. It is commonly used for deep drawn parts and forms such as cooking utensils, kitchen sinks, automobile molding and trim, wheel covers, toasters, etc.

301 stainless steel foils have high corrosion resistance and excellent mechanical properties making them ideal for many industrial applications.

They do not require any heat treatment after fabrication and can be used as it is without any additional processing. The corrosion resistance of these foils is due to the presence of chromium in their composition which imparts a passive layer on their surface protecting them from corrosion when exposed to air or water.

2.What are 304 stainless steel foils?

304 stainless steel foil, also known as 18/8 stainless steel foil, European grade 1.4301 foil, is the most common stainless steel.

The steel contains both chromium (usually 18%) and nickel (usually 8%) metals as the main non-iron constituents. It is an austenite steel foil.

It is not very electrically or thermally conductive and is non-magnetic. It has a higher corrosion resistance than regular steel and is widely used because of the ease in which it is formed into various shapes.

304 stainless steel foil is the most versatile and widely used of all stainless steels foils. Its chemical composition, mechanical properties, weldability, formability and corrosion/oxidation resistance provide the best all-round performance at a relatively low cost.


3.What is 316L stainless steel foil?

316L stainless steel foil is a low carbon content, the nickel and molybdenum components are added to increase the corrosion resistance of steel. It has excellent corrosion resistance in normal atmospheric environment and seawater.

316L stainless steel foil also has good resistance to chloride attack, so it is usually used in the marine environment.

316L stainless steel foil can be annealed at temperature of 1010-1120 ° C (1850-2050 ° F). The 316L stainless steel foil can be easily welded by all standard welding methods, and post-weld heat treatment is not required to prevent the heat affected zone from cracking.

However, heavy welded sections require more stress relief treatment. Post-weld annealing can be performed at 1040-1065°C (1900-1950°F) for 2 hours, followed by air cooling or rapid cooling to prevent sensitization when part stress relief treatment cannot be performed.

Applications of 316L stainless steel foils:

316L stainless steel foil is widely used in papermaking equipment, heat exchanger, dyeing equipment, film processing equipment, pipelines, coastal areas outside the building materials, marine, industrial air field.

Also they are used in the field of solenoid valves.

What are stainless steel foils surface finish?

  • TR/BA – Bright annealed is a bright cold rolled highly reflective finish. Cold rolled, bright annealed and skin-passed, the product have excellent brightness and good reflexivity like mirror, kitchen apparatus,ornament etc.
  • No.4 Finish: The most popular finish for kitchen appliances and work surfaces due to its smooth texture with little reflectivity.
  • Mirror Finish: No.8 is a mirror-finished surface with the highest reflectivity without abrasive grains. The stainless steel deep processing industry also calls as 8K plates. Generally, BA materials are used as raw materials for mirror finishing only through grinding and polishing. After mirror finishing, the surface is artistic, so it is mostly used in building entrance decoration and interior decoration.

Features of stainless steel foils

  • 1) Strength – Stainless steel is known for its strength in comparison to other metals or alloys. It can stand up against the stresses that cause cracking and breaking in weaker metals. This means that you will be able to enjoy your stainless steel products for a much longer time than if they were made from a lesser quality material.
  • 2) Corrosion Resistance – Another benefit of stainless steel is that it resists corrosion from water, chemicals, acidic substances and salt air. This makes it perfect for use in environments where corrosion could quickly ruin regular metal parts or products.
  • 3) Durability – Because the material is so strong and resistant to corrosion you will not have to worry about replacing your stainless steel products very often. They will last for years before you need to think about buying new ones. As an added bonus, this helps reduce the cost.

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