431 Stainless Steel Sheets and Plates Supplier
- Thickness:0.05mm – 200mm
- Width: 600mm – 2000mm, the narrowed products pls check in Strip Products
- Length: 500mm-12000mm
- Finish: 2B, 2D, Black, NO.1, Anneal pickling
- MOQ: 2MT
Product Description
431 stainless steel plate is a martensitic stainless steel plate with excellent corrosion resistance, high strength, good hardness, and grinding properties. This stainless steel plate contains high content of chromium (16-18%) and a small amount of nickel (less than 2.5%), as well as a certain amount of molybdenum and phosphorus elements, which work together to make 431 stainless steel plate exhibit excellent corrosion resistance and mechanical properties. At the same time, the stainless steel plate can still maintain good strength and toughness at high temperatures and has excellent heat resistance properties.
431 stainless steel plate is widely used in the manufacture of high-performance valves, pumps, bearings, turbine blades, forgings, springs, and other mechanical parts with high strength and corrosion resistance requirements. Due to its excellent processing properties and good grinding properties, 431 stainless steel sheets are also widely used in the production of food processing machinery, ship parts, and chemical equipment. In short, 431 stainless steel sheets are high-performance and multi-purpose stainless steel sheets for a variety of industrial applications with high strength and corrosion resistance requirements.
Specification of 431 Stainless Steel Sheets& Plates
431 Chemical Composition in Different Standard
| 431 | C% | Si% | Mn% | P% | S% | Cr% | Ni% |
| ASTM | 0.12-0.20 | ≤ 1.00 | ≤ 1.00 | ≤ 0.04 | ≤ 0.030 | 15-17 | 1.25-2.50 |
| JIS | 0.12-0.20 | ≤ 1.00 | ≤ 1.50 | ≤ 0.04 | ≤ 0.030 | 15-17 | 1.25-2.50 |
| EN | 0.12-0.22 | ≤ 1.00 | ≤ 1.50 | ≤ 0.04 | ≤ 0.030 | 15-17 | 1.25-2.50 |
| GB | 0.12-0.20 | ≤ 1.00 | ≤ 1.50 | ≤ 0.035 | ≤ 0.030 | 15-17 | 1.25-2.50 |
431 Mechanical Property in Different Standard
| 431 | Density (g/cm³) | Melting point (℃) | Thermal conductivity (W/m-K) | Coefficient of thermal expansion (10^-6/K) |
| ASTM | 7.7 | 1425-1510 | 24.9 | 10.4 |
| JIS | 7.7 | 1370-1420 | 26 | 10.4 |
| EN | 7.7 | 1370-1420 | 26 | 10.4 |
| GB | 7.7 | 1370-1420 | 26 | 10.4 |
431 Physical Property in Different Standard
| 431 | Density (g/cm³) | Melting point (℃) | Thermal conductivity (W/m-K) | Coefficient of thermal expansion (10^-6/K) |
| ASTM | 7.7 | 1425-1510 | 24.9 | 10.4 |
| JIS | 7.7 | 1370-1420 | 26 | 10.4 |
| EN | 7.7 | 1370-1420 | 26 | 10.4 |
| GB | 7.7 | 1370-1420 | 26 | 10.4 |
Production Process of 440 Stainless Steel Sheets& Plates
Raw Material Preparation
Select appropriate raw materials (usually special steel or high-purity iron alloy) and pretreat them (such as heating, heat treatment, refining, etc.).
Ingot Preparation
The pretreated raw material is poured into an electric arc furnace or other melting equipment, smelted, and refined to obtain high-purity stainless steel liquid metal.
Continuous Casting
The liquid metal is poured into a continuous casting machine and formed into thin or thick plates by rapid cooling. This process usually includes steps such as cutting and surface treatment of the cast slab.
Testing Quality
The finished 431 stainless steel sheets are tested and quality controlled in terms of chemical composition, physical properties, appearance quality, etc. to ensure that the products meet customer requirements and relevant standards.
Finished Product Production
According to the customer’s needs and requirements, the stainless steel plate is cut, processed, bent, welded, drilled, polished and other processing, finally forming a product that meets the customer’s needs.
Hot or Cold Rolling
The slab is processed through a hot or cold rolling mill to form the required thickness and width, along with surface treatment and annealing to ensure the stability of material properties and excellent surface quality.
Features of 431 Stainless Steel Sheets& Plates
431 stainless steel sheets and plates have excellent corrosion resistance and can be used in a variety of acidic and alkaline environments.
431 stainless steel sheets and plates are able to maintain stable mechanical properties at high temperatures for a long time, and is therefore widely used in high temperature environments.
431 stainless steel sheets and plates have high strength, hardness and wear resistance, as well as good plasticity and toughness.
431 stainless steel sheets and plates are easy to process and can be processed by cold working, hot working and welding, so it is widely used in various industrial fields.
431 stainless steel sheets and plate can obtain higher strength and hardness after quenching treatment, so it is widely used in the manufacture of highly demanding mechanical parts and tools.
Application of 431 Stainless Steel Sheets& Plates
Food Processing Industry
Due to its high strength and better corrosion resistance, it can be used to manufacture various food processing equipment and appliances, such as food grinders, meat processing machinery, food conveying equipment, etc. It is also able to withstand the high temperature and high-pressure environment during food processing and is not easily deformed and damaged, ensuring production efficiency and food hygiene and safety.
Machinery Manufacturing Industry
431 stainless steel sheets are widely used in the machinery manufacturing industry, due to their high strength and good wear resistance, they can be used to manufacture high-temperature and wear-resistant mechanical parts, such as bearings, gears, screws, etc. In addition, 431 stainless steel plate is often used in the manufacture of screws, pump shafts, automotive shafts, and other parts that require high strength and high corrosion resistance. In addition, in the marine, petroleum, chemical, and other fields, 431 stainless steel plate is also widely used in the manufacture of high corrosion resistance of pipelines, valves and marine platforms and other equipment.
Chemical Industry
431 stainless steel sheets are also widely used in the chemical industry. Due to its high corrosion resistance and high-temperature strength, it can play an important role in the manufacture of chemical storage tanks, pipelines, valves, pumps, and other chemical equipment. In addition, 431 stainless steel sheet is also used in the production of certain chemical reactors and heat transfer equipment, such as heat exchangers, steam generators, and distillation towers.
Oil and Gas Industry
In the oil and gas industry, 431 stainless steel sheets are commonly used in the manufacture of equipment such as drill bits, pump bodies, valves, pipelines, and storage tanks. It's high strength and excellent corrosion resistance enables it to withstand harsh working environments and high temperatures and pressures.
Medical Equipment Manufacturing Industry
431 stainless steel sheets have a wide range of applications in the medical industry because of their good corrosion resistance, mechanical properties, and processability. It is often used to make medical equipment and instruments, such as scalpels, surgical forceps, orthopedic implants, dental equipment, etc. In addition, 431 stainless steel plates can also be used to make medical consumables, such as surgical sutures, medical needles, etc. As medical equipment and instruments are used in harsh environments, the requirements for materials are very high, so the corrosion resistance, mechanical properties, and processing properties of 431 stainless steel sheets need to meet the appropriate standards.
FAQ
Stainless 431 and 316 are two different types of stainless steel, with different compositions and properties.
431 stainless steel sheets is a martensitic stainless steel containing chromium, nickel, and molybdenum. It is characterized by its high strength, toughness, and corrosion resistance, especially in acidic environments. It is often used in applications that require high strength and corrosion resistance, such as pumps, valves, and shafts.
316 stainless steel sheets, on the other hand, is an austenitic stainless steel containing chromium, nickel, and molybdenum. It is characterized by its high corrosion resistance, especially in chloride environments, and excellent formability and weldability. It is commonly used in applications that require good corrosion resistance, such as marine equipment, chemical processing equipment, and medical devices.
In summary, stainless 431 is a high-strength, martensitic stainless steel with good corrosion resistance, while stainless 316 is an austenitic stainless steel with excellent corrosion resistance and good formability and weldability. The choice between these two types of stainless steel depends on the specific application and the desired properties.
There are several key differences between 431 stainless steel and 304 stainless steel, including the following:
- Chemical Composition: 431 stainless steel contains higher levels of chromium (Cr) and nickel (Ni), while 304 stainless steel contains higher levels of chromium and molybdenum (Mo)
- Hardness: Since 431 stainless steel contains higher chromium content, it has higher hardness and strength, while 304 stainless steel is softer
- Corrosion Resistance: 431 stainless steel has better corrosion resistance than 304 stainless steel, especially in high-temperature environments
- Magnetism: 431 stainless steel is a magnetic stainless steel, while 304 stainless steel is a non-magnetic stainless steel.
Therefore, when choosing stainless steel materials, you need to choose the right material according to the specific use environment and requirements. If you need high strength and corrosion resistance, you can choose 431 stainless steel; if you need better processability and decorative properties, you can choose 304 stainless steel.
431 stainless steel plate is a hard stainless steel material with relatively high machining difficulty, but it can still be machined due to its good malleability and machinability. Proper tools and processing parameters, such as proper cutting speed and feed rate, as well as the use of cutting tools with higher hardness and wear resistance, are required to improve processing efficiency and reduce costs during machining. In addition, the weldability of 431 stainless steel plate is also better, but care needs to be taken to select the appropriate welding material and welding process to avoid problems such as hydrogen cracking.
The service life of 431 stainless steel sheet depends on the specific conditions and environment in which it is used, such as working temperature, humidity, chemical exposure, degree of wear and tear, etc. In general, if used in the proper environment and maintained, the service life of 431 stainless steel sheet can be decades or more.
To extend the service life of 431 stainless steel plates, the following measures can be taken:
- Correct Use and Maintenance: avoid prolonged exposure to moisture, high temperature, or corrosive environment, and avoid heavy collisions, friction, and other external damage.
- Regular Cleaning and Maintenance: regularly clean the surface stains, and prevent the accumulation of dust and dirt on the surface, affecting the aesthetic and corrosive properties. In particular, avoid cleaning with chemicals containing chlorine to avoid corrosion of the surface.
- Use Appropriate Accessory Equipment and Tools: such as cutting knives, drills, etc., should be selected with appropriate types and specifications to avoid excessive wear and damage to the tool and workpiece surfaces.
- Proper Storage and Transportation: Avoid contact with other metal materials when storing to prevent oxidation and corrosion; avoid violent collision and vibration when transporting to avoid surface damage.
- Regular Inspection: Conduct regular inspections and maintenance to find and solve problems in time to avoid the aggravation of damage.
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