What is 4003 ferritic stainless steel

You should be asking about 403 stainless steel, right?

Ferritic stainless steel and 304 are good.

Ferritic stainless steel: In the state of use, the stainless steel is dominated by ferrite structure. The chromium content is between 11% and 30%, and it has a body-centered cubic crystal structure. This kind of steel generally does not contain nickel, sometimes contains a small amount of Mo, T, Nb and other elements, this kind of steel has the characteristics of large thermal conductivity, small expansion coefficient, good oxidation resistance, excellent stress corrosion resistance, etc.

It is mostly used in the manufacture of parts that are resistant to atmospheric, water vapor, water and oxidizing acids. This type of steel has disadvantages such as poor plasticity, significantly reduced plasticity and corrosion resistance after welding, thus limiting its application. The application of out-of-furnace refining technology (AOD or VOD) can greatly reduce interstitial elements such as carbon and nitrogen, so that this type of steel is widely used.

Ferritrite

The grain boundaries are smooth, twins or slip lines are rare in the crystal, the color is light green, shiny, and dark after deep corrosion. Ferrite in steel is present in sheets, blocks, needles, and reticules. This part of the ferrite is called pre-eutectic ferrite or tissue-free ferrite.

With different formation conditions, pre-eutectic ferrite has different forms, such as equiaxed, along crystalline, spindle-shaped, zigzag and needle-like.

Ferrite is also the matrix of pearlitic tissue. In the hot-rolled (normalized) and annealed microstructures of carbon steel and low-alloy steel, ferrite is the main constituent phase; The composition and structure of ferrite have an important impact on the process properties of the steel, and in some cases, also on the performance of the steel.

405 stainless steel belongs to the American standard ferritic stainless steel, and the implementation standard: ASTM A276 A276M-17

405 stainless steel is American standard ferritic stainless steel, containing 12% chromium 30%. Its corrosion resistance, toughness and weldability improve with the increase of chromium content, and the stress corrosion resistance of chloride DAO is better than that of other types of stainless steel. 405 stainless steel is used as steam turbine material, quenching components, composite steel.

The chemical composition of 405 stainless steel is shown in the following figure:

405 stainless steel chemical composition.

Carbon C: Manganese Mn: Silicon Si: Chromium Cr: Nickel Ni:

Phosphorus p: sulfur s: aluminum al:

It belongs to ferritic stainless steel.

Ferritic stainless steel.

405 stainless steel is a low chromium pure ferritic stainless steel, aluminum is added in 410s, so that the oxidation resistance of the rigidity is improved, non-hardened steel, less cold work hardening, with oxidation resistance, plasticity, toughness and cold formability equivalent to low chromium stainless steel is better than other ferrite stainless steels with high chromium content.

1. 405 stainless steel corresponding grades: 1. National standard GB-T standard: digital grade:

S11348, new grade: 06Cr13Al, old grade: 0Cr13Al, 2, American standard:

ASTMA Standard: S40500, SAE Standard: 51405, UNS Standard:

405,3, Japanese standard JIS standard: SUS405,4, German standard DIN standard:.

2. Chemical composition of 405 stainless steel: carbon c: silicon si:, manganese mn: , phosphorus p: , sulfur s:, chromium cr:, nickel ni: charge allowed, molybdenum mo:, nitrogen n:—, copper cu:—, other elements:.

3. Physical properties of 405 stainless steel: density density (20).

kg , melting point : 1480 1530, specific heat capacity (0 100 ) kg (, thermal conductivity w (

100 , thermal conductivity w (

500 -: coefficient of linear expansion.

10-6/k)

0 100 , linear expansion coefficient (10-6 k).

0 570 :, resistivity (20).

ω.mm2 m), longitudinal modulus of elasticity.

20) GPA:200, Magnetic:Yes.

4. Mechanical properties of 405 stainless steel: Delivery status: bar solution treatment, plate solution pickling, tensile strength (rm mpa):

410, Tensile strength (:175, elongation a %: 20, section shrinkage (z %):

60。5. 405 stainless steel heat treatment: hardness HBW: annealed 183, hardness HRB: 83, heating temperature: 780 830, heating method: air cooling or slow cooling.

405 stainless steel application field: mainly used in 410 and 430 because of the air can be hardened and not suitable for places, such as petroleum refining equipment, pressure vessel lining, steam turbine plate and composite steel plate, etc.

Ferritic stainless steel is made of stainless steel. Ferritic stainless steel is a common crack in stainless steel, which is a kind of stainless steel with ferrite structure as the main stainless steel in use. The stainless steel has a chromium content of between 11% and 30%, and it also contains small amounts of molybdenum, titanium, niobium and other elements.

In addition to good corrosion resistance, ferritic stainless steel has the biggest characteristics of good oxidation resistance, excellent stress resistance, good thermal conductivity and very small expansion coefficient. <

Ferritic stainless steel is made of stainless steel. Ferritic stainless steel is a common type of stainless steel, which is a kind of stainless steel with ferritic structure as the main body in the state of use. The stainless steel has a chromium content of between 11% and 30%, and it also contains small amounts of molybdenum, titanium, niobium and other elements.

In addition to good corrosion resistance, ferritic stainless steel has the biggest characteristics of good oxidation resistance, excellent stress resistance, good thermal conductivity and very small expansion coefficient.

Summary. 1. Ferritic stainless steel (400 series) has a chromium content of 15% to 30%, and has a body-centered cubic crystal structure. This kind of steel generally does not contain nickel, sometimes contains a small amount of MO, Ti, NB and other elements, this kind of steel has a large thermal conductivity, small expansion coefficient, good oxidation resistance, excellent stress corrosion resistance, etc., and is mostly used to manufacture parts and components that are resistant to atmospheric, water vapor, water and oxidizing acid corrosion.

Ferritic stainless steel is not only relatively low and stable, but also has many unique characteristics and advantages, it has been proven that in many applications that were originally thought to be only austenitic stainless steel (300 series), ferritic stainless steel is an excellent alternative material, ferritic stainless steel does not contain nickel, the main elements are chromium (>10%) and iron, chromium is a particularly corrosion-resistant element of stainless steel, and its ** is relatively stable Stainless steel is a common material in stainless steel, with a density of g cm3, which is also called 18 in the industry 8 stainless steel. High temperature resistance of 800 degrees, with good processing performance, high toughness characteristics, widely used in industry and furniture decoration industry and food and medical industry. 304 is a versatile stainless steel that is widely used in equipment that requires good overall properties (corrosion resistance and formability).

1. Ferritic stainless steel (400 series) has a chromium content of 15% to 30%, and has a body-centered cubic crystal structure. This kind of steel generally does not contain nickel, sometimes contains a small amount of MO, TI, NB and other elements, this kind of steel has a large thermal conductivity, small expansion coefficient, good oxidation resistance, excellent stress corrosion resistance, etc., mostly used in the manufacture of atmosphere, water vapor, water and oxidizing acid corrosion resistant parts. Ferritic stainless steel is not only relatively low and stable, but also has many unique characteristics and advantages, it has been proven that in many applications that originally thought that only austenitic stainless steel (300 series) can be used, ferritic stainless steel is an excellent alternative material, ferritic rust steel does not contain nickel, the main elements are chromium (>10%) and iron, chromium is a particularly corrosion-resistant element of stainless steel, and its ** is relatively stable Stainless steel is a common material in stainless steel, with a density of g cm3, It is also called 18 8 stainless steel in the industry.

High temperature resistance of 800 degrees, with good processing performance, high toughness characteristics, widely used in industry and furniture decoration industry and food and medical industry. 304 is a general-purpose stainless steel that is widely used in the manufacture of equipment that requires good overall properties (corrosion resistance and formability).

Ferritic stainless steel does not contain nickel, the main elements are chromium (>10%) and iron, chromium is a particularly corrosion-resistant element of stainless steel, and its ** is relatively stable.

Summary. How to explain that 304 stainless steel does not have ferrite pro!Hello, I am glad to answer your question <> pro explained that 304 stainless steel without ferrite is:

Ferritic stainless steel contains chromium 15% to 30%. Its corrosion resistance, toughness and weldability improve with the increase of chromium content, and its chloride stress corrosion resistance is better than that of other types of stainless steel. Because of its high chromium content, ferritic stainless steel has good corrosion resistance and oxidation resistance, but poor mechanical and technological properties, and is mostly used in acid-resistant structures with little stress and oxidation-resistant steel.

This kind of steel can resist the corrosion of atmosphere, nitric acid and brine solution, and has the characteristics of good oxidation resistance at high temperature and small thermal expansion coefficient, which is used for nitric acid and food factory equipment, and can also be used to make parts that work at high temperatures, such as gas turbine parts. Martensitic stainless steels have high strength, but poor plasticity and weldability. The commonly used grades of martensitic stainless steel are 1Cr Cr13, etc., because of the high carbon content, so it has high strength, hardness and wear resistance, but the corrosion resistance is slightly poor, and it is used for some parts with high mechanical property requirements and general corrosion resistance requirements, such as springs, steam turbine blades, hydraulic pressure valves, etc.

I hope mine can help you <>

Do you have any other questions?

How to explain that 304 stainless steel does not have ferrite?

How to interpret 304 stainless steel without Oki ferrite pro!Hello, I'm glad to answer your <> to explain the method of 304 stainless steel without ferrite: ferritic stainless steel contains chromium 15% 30%.

Its corrosion resistance, toughness and weldability improve with the increase of chromium content, and its chloride stress corrosion resistance is better than that of other types of stainless steel. Because of its high chromium content, ferritic stainless steel has good corrosion resistance and oxidation resistance, but its mechanical properties and process properties are poor, so it is mostly used in acid-resistant structures with little stress and oxidation-resistant steel. This kind of steel can resist the corrosion of atmosphere, nitric acid and brine solution, and has the characteristics of good oxidation resistance at high temperature and small thermal expansion coefficient, which is used for nitric acid and food factory equipment, and can also be used to make parts that work at high temperatures, such as gas turbine parts.

Martensitic stainless steel has a high degree of strong culture, but poor plasticity and weldability. The commonly used grades of martensitic stainless steel are 1Cr Cr13, etc., because of the high carbon content, so it has high strength, hardness and wear resistance, but the corrosion resistance is slightly poor, and it is used for some parts with high mechanical property requirements and general corrosion resistance requirements, such as springs, steam turbine blades, hydraulic pressure valves, etc. I hope mine can help you <>

Do you have any other questions?

Why does 304 contain ferrite.

Improper smelting or forging, component segregation or heat treatment will cause 304 stainless steel to contain a small amount of martensitic or ferritic structure.

Does 304 contain ferrite have an impact on the initial use and environmental protection?

It has no impact on the environment.

304 is safer.

304 stainless steel is one of the most widely used chromium-nickel stainless steels, as a widely used steel, it has good corrosion resistance, heat resistance, low temperature strength and mechanical properties; Good heat workability such as stamping and bending, and no heat treatment hardening.

304 Precautions for use:

1. Do not hold salt, soy sauce, vinegar, vegetable soup, etc. for a long time, because these foods contain a lot of electrolytes, if they are stored for a long time, stainless steel will be like other metals, electrochemical reaction with these electrolytes, so that harmful metal elements are dissolved.

2. Remember not to use stainless steel pots to cook traditional Chinese medicine, because traditional Chinese medicine contains a variety of alkaloids, organic acids and other components, especially under heating conditions, it is difficult to avoid chemical reactions with them, which will make the drug ineffective, and even generate some more toxic complexes.

3. Do not use strong alkaline or strong oxidizing chemicals, such as baking soda, bleaching powder, sodium hypochlorite, etc. Because these substances are electrolytes, they also react electrochemically with stainless steel.

4. Stainless steel cookware can not be burned empty, the thermal conductivity of stainless steel cookware is lower than that of iron products and aluminum products, and the heat transfer time is slow, and air burning will cause the aging and falling off of the chrome plating layer on the surface of the cookware.

5. Keep the cookware clean, scrub it frequently, especially after storing vinegar, soy sauce and other condiments, wash it in time and keep the cookware dry. <>

Dear, you are good! 304 stainless steel is a common material in stainless steel, with a density of g cm3, which is also called 18 8 stainless steel in the industry. High temperature resistance 800, with good processing performance, high toughness characteristics, widely used in the industrial and furniture decoration industry and food and medical industry.