What is the difference between stainless iron 410 or 430 and stainless steel 304 or 303? Which mater

."Differences"2 words cover a wide range of meanings -

I've sorted it out a little bit, and it's enough to understand that.

Ferrit: SUS430

1Cr17 is oxidation resistant at a temperature below 900, and is used as a high-temperature part and nozzle for furnaces.

2. Features. 1) Excellent deep-drawing performance, similar to 304 steel;

2) It has strong corrosion resistance to oxidizing acids, and also has a certain corrosion resistance to lye and most organic acids and inorganic acids; Stress corrosion resistance, cracking ability is stronger than 304 steel grade;

3) The coefficient of thermal expansion is lower than that of 304 steel grades, and the oxidation resistance is high, which is suitable for heat-resistant equipment;

4) The appearance of cold-rolled products is bright and beautiful;

5) Compared with 304, ** cheaper, as an alternative to 304 steel grade.

Martensite: SUS410

1Cr13 oxidation resistance temperature 700 800 temperature range has a certain oxidation resistance and high high temperature strength, can be used for steam turbine blades, nozzles, boiler burner valves of high-temperature parts.

2. Features. 1) High strength;

2) Excellent machinability.

3) hardening after heat treatment;

4) Magnetic;

5) Not suitable for harsh corrosive environments.

3. Scope of application.

General knife edges, mechanical parts, Class 1 cutlery (spoons, forks, knives, etc.).

Austenite type. 0cr18ni9 sus304

The oxidation temperature is below 870, and it can be used as boiler heating surface tubes, heating furnace parts, heat exchangers, muffle furnaces, converters, and nozzles.

2. Features. 1) Excellent processing performance;

2) Excellent welding performance;

3) It has strong corrosion resistance to oxidizing acids, and also has a certain corrosion resistance to lye and most organic acids and inorganic acids;

4) Wide operating temperature range (-196 C0 800C0);

5) The solution state is non-magnetic;

6) The appearance of cold-rolled products has good gloss and is beautiful.

410,430 are nickel-free martensitic stainless steels. 303,304 is an austenitic stainless steel containing more than 9% nickel.

410, 430 and so on are convenient for machining, but the high temperature resistance and corrosion resistance are far less than 304. (The best high-temperature resistant material is the 600 series, which is close to pure nickel and can be used as electric furnace wire.)）

Jinan Heavy Industry Valve **** specializes in selling all kinds of stainless steel valves, you can contact them if you have any questions, 0531-8702 2277 Manager Ruan.

First, the physical properties are different.

Stainless steel: It is a common material in stainless steel, with a density of 18 8 stainless steel in the industry. High temperature resistance 800, with good processing performance and high toughness.

Stainless steel: a general steel grade with good corrosion resistance, better thermal conductivity than austenite, less thermal expansion coefficient than austenite, heat fatigue resistance, addition of stabilized element titanium, and good mechanical properties of weld parts.

Second, the use is different.

Stainless steel: used in the industrial and furniture decoration industry and the food and medical industry.

Stainless steel: 430 stainless steel is used for architectural decoration, fuel burner parts, household appliances, and home appliance parts.

Third, the process is different.

Stainless steel: The etching method is to use screen printing acid-resistant protective film on the surface of stainless steel, and then etch with ferrous chloride liquid to form an artistic pattern. The spray method is to spray pigment particles after screen printing to form the surface of the pear peel and form an artistic pattern.

Stainless steel: The surface has a discontinuous granularity, also known as matte. Processing technology:

Hot rolling + annealing shot peening pickling + cold rolling + annealing pickling. It has a slightly shiny silvery-white color. Processing technology:

Hot rolling + annealing shot peening pickling + cold rolling + annealing pickling.

Comparison of 304 stainless steel and 430 stainless steel:

Corrosion resistance: 430 stainless steel contains chromium, basically no nickel metal, 304 stainless steel contains more chromium nickel metal, so 430 stainless steel corrosion resistance is not as good as 304 stainless steel.

Stability performance: 430 stainless steel is ferritic form, 304 stainless steel is austenitic form, 304 stainless steel is more stable than 430 stainless steel, toughness: 304 stainless steel has strong toughness, stronger than 430 stainless steel.

Thermal conductivity: The ferrite of 430 stainless steel is better than the austenitic thermal conductivity of 304 stainless steel, and the mechanical properties: 430 stainless steel is added with the stable chemical element titanium, and the mechanical properties of the weld part are better than those of 304 stainless steel

Hello, glad to answer for you! I have received your question and will get back to you right away.

1. The corrosion resistance is different: 430 stainless steel contains chromium, basically no nickel metal, and 304 stainless steel contains more chromium and nickel metal, so the corrosion resistance of 430 stainless steel is not as good as that of 304 stainless steel. 2. The stability performance is different

430 stainless steel is in the ferritic form, 304 stainless steel is in the austenitic form, and 304 stainless steel is more stable than 430 stainless steel. 3. Different toughness: 304 stainless steel has strong toughness, which is stronger than that of 430 stainless steel.

4. Different thermal conductivity: the ferrite of 430 stainless steel is better than the austenitic thermal conductivity of 304 stainless steel.

304 is a nickel-chromium austenitic acid-resistant stainless steel, weak magnetic, basically can not adjust the mechanical properties through heat treatment, but can be changed to a certain extent through cold working. Good corrosion resistance, but not chloride ion corrosion;

430 is a chromium-based martensitic-ferritic stainless steel. The mechanical properties can be adjusted by heat treatment to obtain the required hardness or toughness. Magnetophilic. Resistant to natural environment corrosion.

1. Corrosion resistance: 430 stainless steel contains chromium and basically does not contain nickel metal. 304 stainless steel contains more chromium-nickel metal, so the corrosion resistance of 430 stainless steel is not as good as that of 304 stainless steel.

2. Stable performance: 430 stainless steel is ferritic form, 304 stainless steel is austenitic form, so 304 stainless steel is more stable than 430 stainless steel.

3. Toughness: 304 stainless steel has strong toughness, which is stronger than that of 430 stainless steel.

4. Thermal conductivity: the ferrite of 430 stainless steel has better thermal conductivity than the austenitic of 304 stainless steel.

5. Mechanical properties: 430 stainless steel adds chemical element titanium, and the mechanical properties of the weld part are better than those of 304 stainless steel.

304 stainless steel and 430 stainless steel have their own advantages: 430 stainless steel has good thermal conductivity and mechanical properties, and 430 stainless steel is better for building decoration, fuel burner parts, household appliances, household appliances and other fields; 304 stainless steel has strong toughness and corrosion resistance, and it is better in industries that require corrosion resistance such as industrial and food medical.

430 stainless steel contains chromium and is basically nickel-free. 304 stainless steel contains more chromium nickel metal, so the corrosion resistance of 430 stainless steel is not as good as that of 304 stainless steel.

Refers to the quality of the material, 304 is good quality, 430 is better

430 stainless steel contains chromium and is basically nickel-free. 304 contains more chromium-nickel metal, so the corrosion resistance of 430 stainless steel is not as good as that of 304 stainless steel. 430 stainless steel is the ferritic form, while 304 stainless steel is the austenitic form, so 304 stainless steel is more stable than 430 stainless steel.

It's just that the material of 430 is better.

It is known as "stainless iron" in the industry, because it is a kind of ferritic stainless steel, with good corrosion resistance, and has excellent thermal conductivity than austenitic stainless steel, and is mainly used in building decoration, some household appliance parts, fuel burner parts and other normal or high temperature scenes, but because the chromium content of 430 stainless steel is much less than that of 304, it is not as good as 304 in terms of hardness.

Such a ferritic stainless steel, in terms of corrosion resistance has been inferior to 304 stainless steel, and the performance indicators, do not meet the national standards for food-grade stainless steel, no matter from what point of view, 430 stainless steel is not food-grade stainless steel, and more often stainless iron is the first scrap iron, steel, lead and other materials through the secondary re-processing, through a series of processing manufacturing.

410 stainless steel is better.

The main reasons are as follows:

1. It is in contact with other stainless steel materials.

410 stainless steel has very good strength and good performance. and 304 stainless steel.

The strength is not as good as that of 410, and it is easy to be damaged during use.

The safety performance of stainless steel is very good, so it is widely used in the automobile transportation industry. 304 is relatively heavy, so it is generally not durable in some small household windows and items for daily use.

Stainless steel has strong pit corrosiveness and can be widely used in some special industries, while 304 does not have such good oxidation resistance and is easy to rust and be corroded.

304 stainless steel.

It is a common Bichajin stainless steel, also known as 06Cr19Ni10 stainless steel, with good wear resistance and excellent heat resistance.

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 industry, furniture decoration industry and food and medical industry.

The common labeling methods on the market include 0Cr18Ni9 and SUS304, of which 0Cr18Ni9 generally represents the production of the national standard, 304 generally represents the production of the ASTM standard, and SUS 304 represents the simple production of the Japanese standard.

304 is a versatile stainless steel that is widely used in equipment and parts that require good overall properties (corrosion resistance and formability). In order to maintain the corrosion resistance inherent in stainless steel, the steel must contain more than 18% chromium and more than 8% nickel. 304 stainless steel is a grade of stainless steel produced in accordance with the American ASTM standard.

Difference Between Stainless Steel 304 and 316.

304 stainless steel: resistant to chemical oxidation; 304 is the material that must be used in the national pressure cooker standard, and the standard material of the stainless steel pressure cooker is more than 304, because there are not many pressure cooker production factories approved by the state, so these factories are very honest, all of them are 304 stainless steel materials used in the minimum standard.

316 Stainless Steel: High-grade supplies are made with 10% nickel to make stainless steel more durable and corrosion-resistant, this stainless steel is called 18-10 stainless steel, that is"Medical stainless steel"There is no precipitation of metal ions at all.

First of all, 316 stainless steel contains MO, which is more corrosion resistant than 304 stainless steel in a high-temperature environment, so in the context of leaking high-temperature Huanqin search pants, engineers generally choose 316 material parts.

Secondly, there is also a difference between the two in terms of grade; 304 stainless steel corresponds to Chinese grade 0Cr18Ni9; 316 stainless steel corresponds to the Chinese grade 0Cr17Ni12Mo2.

Thirdly, 316 mainly reduces the CR content, increases the Ni content, and increases the MO2% by 3%. Therefore, its corrosion resistance is stronger than that of 304, suitable for use in chemical, seawater and other environments, similarly, the cost of 316 is also higher than that of 304, and generally 316 is used in places with higher requirements to replace 304.

304 advantages: excellent heat and corrosion resistance, good mechanical strength. Disadvantages: poor sulfur resistance and reduction resistance.

316 advantages: heat resistance, acid resistance, alkali corrosion resistance is very good. Disadvantages: Poor sulfur resistance and reduction resistance, ** higher than 304.

420 advantages: high mechanical strength. Disadvantages: Poor corrosion resistance.

304 stainless steel, 18Cr8Ni stainless steel. Excellent heat and corrosion resistance, in the atmosphere of oxidizing gas, it can be used up to 900. Due to the carburizing effect, the source of its anti-secondary ability is reduced, the service temperature is reduced to 430 540, and it has good mechanical strength in the range of -185 790.

It is mainly used in chemical, food, plastic and petroleum industries. It is a typical 100 thermocouple protection tube material, and more than 80% of thermocouples use this protection tube. Poor sulfur resistance and reduction resistance.

316 stainless steel, 18Cr-12Ni-Mo stainless steel. Due to the MO content, 930 can be used in the oxidation atmosphere, and the scope of application is the same as that of the 304 type, but the heat resistance, acid resistance, and alkali corrosion resistance are very good. Corrosion resistance is higher than 304, but ** higher than 304.

420 stainless steel, which is martensitic stainless steel, can be used as a cutting tool, and after heat treatment hardening, HRC can be more than 50. The strength is higher than 304, but the corrosion resistance is not high.

304 is the most conventional stainless steel, the range of use is also the widest, bending, corrosion resistance are good, 420 is martensitic stainless steel, the strength is higher than 304, but the corrosion resistance is not high, 316, the corrosion resistance is higher than 304, add mo element, but ** higher than 304

For more details, please refer to:

1: Grade 316Ti stainless steel.

Two: chemical composition.

c：≤ si≤ mn≤ p≤ s≤ ni crmo ti≥5*c%~

Three: the scope of application, the field of application:

316L stainless steel is added with MO, so its corrosion resistance, atmospheric corrosion resistance and high temperature strength are particularly good, and can be used under harsh conditions; Excellent work hardening (non-magnetic). Excellent strength at high temperatures. 316L stainless steel is an austenitic stainless steel and cannot be strengthened by heat treatment.

It has good strength, plasticity, toughness and cold formability, as well as good low-temperature properties. Due to the addition of 2% MO on the basis of Cr18Ni8, the steel is endowed with good resistance to reducing media and pitting resistance. It has suitable corrosion resistance in various organic acids, inorganic acids, alkalis, salts and seawater.

In reducing acidic media, its corrosion resistance is much better than that of 304

Four: Overview. The corrosion resistance of stainless steel is better than that of 304 stainless steel, and it has good corrosion resistance in the production process of pulp and paper. And 316 stainless steel is also resistant to the erosion of the ocean and the aggressive industrial atmosphere. In intermittent use below 1600 degrees and continuous use below 1700 degrees, 316 stainless steel has good oxidation resistance.

In the range of 800-1575 degrees, it is better not to act continuously on 316 stainless steel, but when 316 stainless steel is used continuously outside of this temperature range, the stainless steel has good heat resistance. 316L stainless steel has better resistance to carbide precipitation than 316 stainless steel, and can be used in the above temperature ranges. Annealing is carried out in the temperature range of 1850-2050 degrees, followed by rapid annealing, followed by rapid cooling.

It is resistant to high temperatures, easy to process, and high strength. 316L stainless steel, no post-weld annealing is required.