Manufacturer,Stockist and Exporter of Stainless Steel 431 Flanges

Manufacturer,Stockist and Exporter of Stainless Steel 431 Flanges


Stainless Steel 431 Flanges

Stainless Steel 431 flanges are a high-strength, martensitic stainless steel grade that provides excellent resistance to wear, oxidation, and corrosion. Composed primarily of chromium and a higher carbon content than standard austenitic grades, Stainless Steel 431 flanges are known for their superior hardness and durability, making them ideal for applications that require high strength, toughness, and corrosion resistance. Repute Steel & Engineering Co. is a trusted manufacturer, stockist, and exporter of Stainless Steel 431 flanges, offering products that meet stringent industry standards and deliver reliable performance in demanding environments.


Repute Steel & Engineering Co. ensures that every Stainless Steel 431 flange is produced using advanced manufacturing techniques and undergoes rigorous quality checks before being delivered to clients. These flanges are available in a range of types, including weld neck, slip-on, blind, threaded, and socket weld, and are suitable for a variety of industrial applications. The company’s commitment to quality means that their Stainless Steel 431 flanges offer outstanding mechanical properties, such as high tensile strength, excellent fatigue resistance, and the ability to withstand high temperatures. This makes them well-suited for industries like aerospace, chemical processing, power generation, and marine engineering.


As a leading stockist and exporter, Repute Steel & Engineering Co. offers Stainless Steel 431 Flanges in a variety of types, including weld neck, slip-on, blind, threaded, and socket weld flanges, to meet the specific needs of different industries. The flanges are available in various sizes and pressure ratings, including ASME B16.5 Class 150, 300, 600, and 900, ensuring they can be used in a wide range of applications. Whether for routine maintenance, large-scale projects, or custom applications, Repute Steel & Engineering Co. provides clients with the right solutions to meet their specifications. The company’s wide inventory ensures that customers can access flanges quickly and efficiently, minimizing downtime and improving project timelines.


Specification of Stainless Steel 431 Flanges


Specification Details
Material Stainless Steel 431 (UNS S43020)
Flange Types Weld Neck, Slip-On, Blind, Threaded, Socket Weld, Lap Joint
Size Range 1/2" to 24" (DN 15 to DN 600)
Pressure Rating ASME B16.5 Class 150, 300, 600, 900, 1500, 2500
Thickness Varies according to size and pressure rating (typically 3mm to 50mm)
Surface Finish Mill Finish, Polished, Bead Blasted, Electro Polished
Connection Type Flanged, Welded, or Bolted connections
Standard Compliance ASTM A240, ASTM A182, ASME B16.5, DIN, JIS, ISO, BS 10
Material Properties Chromium: 16 – 18%, Carbon: 0.12% max, Nickel: 0.75% max
Temperature Resistance Good oxidation resistance up to 800°C (1472°F)
Corrosion Resistance Moderate corrosion resistance in mildly corrosive environments
Applications Automotive, food processing, chemical processing, machinery parts

As a leading stockist and exporter, Repute Steel & Engineering Co. maintains a comprehensive inventory of Stainless Steel 431 flanges in various sizes, pressure ratings, and finishes, including Class 150, 300, and 600. The company offers products that conform to international standards such as ASTM, ASME, DIN, and JIS, ensuring their compatibility with systems in different industries worldwide. Repute Steel & Engineering Co. also provides customized solutions to meet specific customer requirements, whether for standard applications or specialized projects that demand unique specifications. Their efficient inventory management and global distribution network ensure that customers receive their orders in a timely and cost-effective manner.


Repute Steel & Engineering Co. has built a strong reputation for delivering high-quality Stainless Steel 431 flanges to clients across the globe. Their ability to offer competitive pricing without compromising on product quality has made them a preferred supplier for industries requiring high-performance components. The company’s export services cover numerous countries, and their reliable logistics ensure that products arrive on time and in perfect condition. Whether it’s a one-time order or long-term supply agreements, Repute Steel & Engineering Co. consistently delivers excellent customer service and high-quality products.


Chemical Composition of Stainless Steel 431 Flanges


Element Percentage (%)
Chromium (Cr) 16.00 – 18.00
Carbon (C) 0.12 max
Nickel (Ni) 0.75 max
Manganese (Mn) 1.00 max
Silicon (Si) 1.00 max
Phosphorus (P) 0.04 max
Sulfur (S) 0.30 – 0.60
Iron (Fe) Balance (remaining)

Mechanical Properties of Stainless Steel 431 Flanges


Property Value
Tensile Strength 480 MPa (70 ksi)
Yield Strength 275 MPa (40 ksi)
Elongation 25% (min)
Hardness (Rockwell C) 20 – 30 HRC
Modulus of Elasticity 200 GPa (29 x 10⁶ psi)
Poisson's Ratio 0.27 – 0.30
Density 7.75 g/cm³ (7750 kg/m³)
Melting Point 1400°C – 1450°C (2552°F – 2642°F)
Coefficient of Thermal Expansion 17.3 µm/m°C (9.61 x 10⁻⁶ in/in°F)
Thermal Conductivity 24.5 W/m·K (14.2 BTU/h·ft·°F)

Countries we have exported our products to

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Countries we have exported our products to

Turkey, Thailand, Bulgaria, Serbia, Mexico, Estonia, Trinidad & Tobago,Tunisia, New Zealand, Indonesia, Puerto Rico, Ireland, India, Morocco, Brazil, Lebanon, Hong Kong, Jordan, Ukraine, Switzerland, Czech Republic, Lithuania, Sri Lanka, Greece, Taiwan, Zimbabwe, Algeria, Romania, Mexico, Ghana, Italy, Philippines, Spain, United Kingdom, Finland, Azerbaijan, Japan, Macau, Israel, Saudi Arabia, Kenya, Bhutan, Poland, Poland, Costa Rica, Kuwait, Singapore, Pakistan, France, Colombia, Tibet, Bolivia, Portugal, Iraq, Australia, Kazakhstan, Nepal, Mongolia, Gambia, Malaysia, Chile, Germany, Slovakia, China, Bahrain, Denmark, Angola, Afghanistan, Peru, Austria, Ecuador, Gabon, Croatia, South Africa, Sweden, Chile, Hungary, United Arab Emirates, Argentina, Bangladesh, Oman, Egypt, United States, Belgium, Canada, Namibia, Norway, Qatar, Belarus, Netherlands,manufacturer stockist and exporter of Stainless Steel 431 Flanges in Bengaluru,manufacturer stockist and exporter of Stainless Steel 431 Flanges in Chennai,manufacturer stockist and exporter of Stainless Steel 431 Flanges in Hyderabad,manufacturer stockist and exporter of Stainless Steel 431 Flanges in Gujarat,manufacturer stockist and exporter of Stainless Steel 431 Flanges in Pune

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