Ferrite Stainless Steel
Wuxi xinfutian metal products co., ltd. was established in the 20th century and now is a great manufacturing enterprise that integrates research and development, production, and sales departments. we has several large warehousing bases. we mainly produce stainless steel pipes, plates, coils, rods, pipe fittings, high nickel alloy steel products, high-temperature resistant products, carbon steel, galvanizing products, and also supply OEM&ODM services.
Why Choose US
Our Factory
Our company has a plant area of 5000+ square meters and 20+ product lines. our stocked stainless steel products is about 20000 tons.We have supplied service more than ten years for customers from various regions as africa, europe, and america, etc.
Product Application
All our products are supplied in accordance with DIN/EN, ASTM/ASME, DIN, JIS standards, and our products are widely used in fields such as petrochemical, oil and gas, marine engineering, shipbuilding, boiler heat exchangers, aerospace, environmental protection equipment, mechanical processing, automobiles, hydropower, nuclear power, refrigeration, new energy equipment, etc. at present.
Quality Assurance
Our company has been certified by some internationally renowned certification bodies, and get certifications as ISO9001, TS16949, BVSGS, etc.
Excellent service
If there is a problem with the product, we will take timely measures to solve it. 24 hours online to answer any questions about the product.
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![Sus410 S41000 Sts410 1.4006 12cr13 410 Stainless Steel Sheet]()
Sus410 S41000 Sts410 1.4006 12cr13 410 Stainless Steel Sheet410 stainless steel steel belongs to ferritic steel, is is a kind of 400S steel.Its corrision resistance and machinability is excellent. Usually it is used on blade products.read more -
![Steel H-beam Customized 430 Stainless Steel H Beam]()
Steel H-beam Customized 430 Stainless Steel H BeamThe 430 stainless steel round bar is a kind of stainless steel product with good corrosion resistance and oxidation resistance. Its chromium content ranges from 16.00% to 18.00%, which can form a...read more -
![Ss430 Stainless Steel Round Bar]()
Ss430 Stainless Steel Round BarThe 430 stainless steel round bar is a kind of stainless steel product with good corrosion resistance and oxidation resistance. Its chromium content ranges from 16.00% to 18.00%, which can form a...read more -
![Sus409 Stainless Steel Sheet]()
Sus409 Stainless Steel SheetSUS409 (also known as AISI 409) is a ferritic stainless steel known for its good corrosion resistance and formability. It is often used in automotive and industrial applications.read more -
![430 Stainless Steel Pipe]()
430 Stainless Steel Pipe430 stainless steel is a ferritic alloy that provides useful mechanical properties and good resistance to oxidation, especially in mildly corrosive environments. It is magnetic and has a lower...read more -
![409L Stainless Steel]()
409L Stainless Steel409L stainless steel is a low-carbon, low-chromium stainless steel material that possesses good high-temperature resistance and corrosion resistance. is typically used for manufacturing parts,...read more -
![436L Stainless Steel]()
436L Stainless Steel436L stainless steel is a low-carbon variant of the ferritic stainless steel family, specifically designed to offer improved corrosion resistance, particularly against atmospheric conditions and...read more -
![439L Stainless Steel Tube]()
439L Stainless Steel TubeType 439 steel is based on conventional ferritic materials (430), with reduced C content and the addition of stabilizing elements as Ti, which improves the steel's resistance to intergranular...read more -
![444 Stainless Steel Tube]()
444 Stainless Steel TubeThe 444 stainless steel tube is a ferritic, non-hardenable alloy that offers excellent corrosion resistance, particularly in environments where there is a risk of crevice corrosion and pitting....read more
Types of Ferrite Stainless Steel
Sus409 Stainless Steel Sheet
SUS409 (also known as AISI 409) is a ferritic stainless steel known for its good corrosion resistance and formability. It is often used in automotive and industrial applications.
430 Stainless Steel Pipe
430 stainless steel is a ferritic alloy that provides useful mechanical properties and good resistance to oxidation, especially in mildly corrosive environments. It is magnetic and has a lower thermal expansion coefficient than austenitic steels, which can be advantageous in certain applications.
409L Stainless Steel
409L stainless steel is a low-carbon, low-chromium stainless steel material that possesses good high-temperature resistance and corrosion resistance. is typically used for manufacturing parts, pipes, and equipment with lower corrosion resistance requirements, especially in automotive exhaust systems.
436L Stainless Steel
436L stainless steel is a low-carbon variant of the ferritic stainless steel family, specifically designed to offer improved corrosion resistance, particularly against atmospheric conditions and certain types of acidic environments.
439L Stainless Steel Tube
Type 439 steel is based on conventional ferritic materials (430), with reduced C content and the addition of stabilizing elements as Ti, which improves the steel's resistance to intergranular corrosion, formability, and weldability. Compared to Type 304 steel, it a lower elongation (about 30%), but its strength and corrosion resistance are similar, and its corrosion resistance is better than that of 200 materials.
444 Stainless Steel Tube
The 444 stainless steel tube is a ferritic, non-hardenable alloy that offers excellent corrosion resistance, particularly in environments where there is a risk of crevice corrosion and pitting. This type of stainless steel is known for its low carbon content, which contributes to its stability against intergranular corrosion when exposed to high temperatures.
Advantages of Ferrite Stainless Steel
Corrosion Resistance
Ferritic steels resist SCC much better, making them suitable for applications and in environments that contain chlorides.
Ductility and Formability
The hardness of steel results from its carbon content, yet it also makes it more brittle and ductile. As ferritic stainless steel contains very little carbon, it is normally more ductile than other steel. This allows ferritic steels to be shaped without weakening. The low carbon content additionally means they have superior formability properties, so can be easily shaped with little potential for cracking or necking.
Low Thermal Expansion
With a low coefficient of thermal expansion, ferritic steels expand less as they're heated. Since the metal retains a fixed dimension more easily, these stainless steels work well in high temperatures.
High Thermal Conductivity
With excellent thermal conductivity properties, ferritic stainless steels allow heat to move efficiently through them. For this reason, they're often used in boiler heat exchangers, furnaces, and in applications that involve heat transfer.
Chemical Properties
Ferritic stainless steel's chemical properties involve its behavior in chemical environments, most notably corrosion, and oxidation resistance, with the main properties being:
|
Chemical Property |
Performance |
Description |
|
Corrosion Resistance |
Mild reaction. |
Good resistance to oxidation and corrosion. |
|
Resistance to Stress-Related Cracking (SCC) |
Very low reaction. |
Higher resistance compared to austenitic stainless steels, especially in chloride environments. |
|
Resistance to localized corrosion and crevice corrosion |
Moderate reaction. |
Moderate resistance in chloride environments. |
|
Low Hydrogen Embrittlement Susceptibility |
Minimal reaction. |
Lower susceptibility, suitable for hydrogen exposure. |
|
Chemical Stability |
No reaction. |
Stable in various chemical environments. |
|
Oxidation Resistance |
No reaction. |
Strong resistance to rusting at high temperatures. |
Physical Properties
Ferritic stainless steel's physical properties are key to selecting it for engineering and industrial uses, particularly in heat exchange and magnetic applications. Next, please review the important physical characteristics in the table below:
|
Physical Property |
Specific Values |
Description |
|
Density |
7.7-8.1 g/cm³ |
Relatively high density, providing stability in structural applications. |
|
Thermal Conductivity |
16-25 W/m·K |
Good heat transfer ability, making it suitable for heat exchange uses. |
|
Thermal Expansion |
10-12 µm/m·K |
Lower thermal expansion compared to austenitic stainless steels, reducing the risk of thermal distortion. |
|
Heat Resistance |
Up to 800°C |
Keeps strength and resists rusting at high temperatures. |
|
Electrical Resistivity |
600-750 nΩ·m |
Moderate electrical resistance, is used in situations where electrical conductivity is not essential. |
|
Magnetic Permeability |
500-2000 H/m |
High magnetic permeability, ideal for magnetic applications. |
|
Melting Point |
1425-1510°C |
High melting point, ensuring durability under high-temperature conditions. |
Mechanical Properties
Ferritic stainless steel's physical traits determine its strength and durability in building applications. Please read the table below for key mechanical properties:
|
Mechanical Property |
Specific Values |
Description |
|
Tensile Strength |
400-600 MPa |
The highest force it can handle while being stretched or pulled. |
|
Yield Strength |
250-450 MPa |
The stress at which it starts to change shape permanently. |
|
Elongation |
20-30% |
The ability to stretch before breaking. |
|
Hardness |
150-200 HB |
Resistance to indentation or scratching. |
|
Modulus of Elasticity |
200 GPa |
The ratio of force to stretching in elastic deformation. |
|
Impact Resistance |
Moderate |
Ability to absorb energy and withstand impact. |
|
Magnetic Property |
High |
Strong magnetic properties, making it suitable for magnetic applications. |
|
Toughness |
Moderate |
The ability to absorb energy and deform permanently without breaking. |
|
Formability |
Good |
Ease of forming into desired shapes. |
|
Weldability |
Good |
It can be welded without losing strength or durability. |
|
Fatigue Resistance |
Moderate |
Resistance to damage under cyclic loading. |
What Is the Chemical Composition of Ferritic Steel
All stainless steel incorporates the metal known as chromium, which is noteworthy for its hardness, corrosion resistance, and exceptional gloss when polished. Ferritic steels are unique in that they usually contain higher levels of chromium than other type of stainless steel.
For instance, one of the most common types of austenitic steel - so-called 18/10 stainless - contains 18 percent chromium - but unlike austenitics, it contains no nickel. Ferritic stainless steels, by contrast, may contain chromium levels as great as 27 percent. That said, not all types of ferritic stainless steel contain such high amounts of chromium; some may even have less than their austenitic counterparts.
How to Determine the Correct Ferrite Percentage
The ferrite percentage needed depends on the type of stainless steel that is being worked with.
300 series stainless materials like 304/L and 316/L have an austenitic microstructure. They are also non-magnetic. This means that in their unheated and untreated state they are free of ferrite, as that is magnetic. These alloys will also have some ferrite in them when they are worked. Ferrite presence can have a detrimental effect and cause corrosion in some cases. There will also be certain situation in which the magnetic tendencies of ferrite can have an effect on how the end product will perform.
Alloy composition is the factor that controls the ferrite content of the cast alloy. Carbon, nitrogen, nickel and manganese are austenite formers. Increasing their content will mean that the capacity for ferrite to form will be greatly reduced. Heating will dissolve much of the retained ferrite. However, cast products are made to contain increased amounts of ferrite and heating will not turn it completely into austenite.
Most arc welding processes are suitable to weld ferritic stainless steel; however, it is advisable to lower the heat input and keep the thickness to a minimum—preferably less than 6mm.Heat control reduces the chance of grain growth, and thin sections minimize the overall impact of a loss of toughness in the material. Additionally, low-carbon austenitic steel can be used as a filler material to minimize the loss of ductility.
The weldability of ferritic stainless steel is poorer than that of austenitic stainless steel. Although not hardenable by heat treatment, ferritic stainless steel can be prone to hot cracking or embrittlement if exposed to high temperatures. Ferrite grain growth can also present an issue in the heat-affected zone, which can reduce ductility and increase susceptibility to intercrystalline corrosion.
Common Applications of Ferritic Steel
There are numerous industries where ferritic stainless steel is used due to its unique properties, which make it stand out. A few applications:
Automotive Components
In automobile production, parts made of ferritic steel are often used for their corrosion resistance and magnetism qualities, e.g., exhaust systems and trim details.
Kitchenware
Sinks and other kitchen items, such as cookware or cutlery, typically use ferritic stainless steels due to their durability and stain resistance.
Architectural Applications
Ferritic stainless steel is used in building facades and the construction of various structural elements because it has a moderate level of corrosion resistance and good aesthetics.
Industrial Equipment
This material is ideal for fabricating equipment in environments with moderate corrosion levels, such as food processing plants and chemical industries.
Customized Service
We can meet the needs of you with diversified products which can be customized according to your needs.
Pre-Sales Service
● We will answer your questions online 24 hours a day with fast response time to help you choose products.
● We can meet the needs of you with diversified products which can be customized according to your needs.
● Samples are available.
● Certificates of quality are available.
● If you want to visit our factory, we will certainly accompany you and answer your questions.
After-Sale Service
● If there is a problem with the product, we will take timely measures to solve it.
● If there is something wrong with the goods, we will take the way of refund or compensation.
● 24 hours online to answer any questions about the product.
● We will always keep in touch with you and make regular return visits.
FAQ
We're professional ferrite stainless steel manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to wholesale bulk ferrite stainless steel in stock here and get free sample from our factory. For price consultation, contact us.
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