Duplex 31803 Washers are widely used in industrial fastening systems where both strength and corrosion resistance are required. Designed to support bolted joints and distribute load evenly, these washers help prevent damage to surfaces while improving the stability of assemblies. Sumit Impex, a well-known manufacturer and supplier in Mumbai, India, provides premium quality Duplex Steel 31803 Washers that are suitable for demanding environments such as offshore platforms, chemical plants, and marine applications.
Sumit Impex is a Supplier of Duplex Steel S31803 Washer, Biggest Stockist of S31803 Duplex Steel Washers as per Standards in Mumbai, India.
S31803 Duplex Steel Washer, Duplex Stainless Steel S31803 Flat Washer, DSS S31803 Washers, Duplex S31803 Cup Washer, UNS S31803 Plain Washer, Duplex Steel S31803 Taper Washer, M6 Duplex S31803 Washers, Duplex Steel S31803 Washers Manufacturers in India.
These washers are manufactured using Duplex Stainless Steel grade UNS S31803, also referred to as EN 1.4462 and commonly associated with ASTM F51 standards. The duplex microstructure, consisting of both austenitic and ferritic phases, offers an excellent balance of mechanical strength and corrosion resistance. This makes Duplex S31803 Washers more durable than many conventional stainless steel washer grades when used in aggressive environments containing chlorides or chemicals.
Because of their strong mechanical properties and resistance to pitting and crevice corrosion, UNS S31803 Washers are frequently used in heavy-duty bolting assemblies where reliability is critical. Their high load-bearing capacity helps maintain secure fastening even under fluctuating pressure and temperature conditions. Depending on the application, these washers can be supplied in different forms such as Duplex 31803 Flat Washers, Duplex Steel S31803 Plain Washers, and Duplex 31803 Spring Washers, making them suitable for a wide range of industrial fastening requirements.
S31803 Duplex Steel Washer Specification
| Specification | ASTM A193 / ASME SA193 |
| Washer Size | M2-M100 |
| Length | 5-300mm |
| Packaging | Comes in boxes of 50, 100, 200, Custom |
| ASME Standard (American) | ASME/ ANSI B18.21.1 |
| DIN Standard (German) | DIN 125 A, DIN 127 B, DIN 7980 |
| Finish | Self color, Polish, Passication |
| Test performed | Hardness test, Torsion test |
| Thread | Coarse, Fine |
| Types of Washer |
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Duplex Steel S31803 Washers Types
Dome Washers
Dome Washers
Ogee Washers
Ogee Washers
Fender Washers
Fender Washers
Spring Washers
Spring Washers
Square Washers
Square Washers
Plain Washer
Plain Washer
Lock Washers
Lock Washers
Countersunk Finishing Washer
Countersunk Finishing Washer
Duplex S31803 Washers Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS |
| Duplex S31803 | 1.4462 | S31803 |
Duplex Steel S31803 Washers Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| S31803 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 22.0 – 23.0 | 3.0 – 3.5 | 4.50 – 6.50 | 0.14 – 0.20 | 63.72 min |
S31803 Duplex Steel Washers Mechanical Properties
| Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
| S31803 | 7.805 | 0.285 | 1420 – 1465 | 2588 – 2669 |
Contact Us For Quatation & Questions Related To Duplex Steel S31803 Washers
Duplex Stainless Steel S31803 Washers Applications
Food Processing Industry
Hydraulic Applications
Offshore Pipelines & Pipe Works
Oil & Gas Industrires
Petrochemical Industry
Piping Systems
Power Plant Industry
Pulp & Paper Industry
Refining Industry
shipbuilding-industries
Chemical Industries
Construction Industries
Export & Supply Destinations Of S31803 Duplex Steel Washers
Nepal, Kyrgyzstan, China, Singapore, Thailand, Saudi Arabia, Myanmar, North Korea, British, South Korea, Lebanon, Hong Kong, Russia, Philippines, Vietnam, Mongolia, Egypt, India, Jordan, Iraq, Armenia, Bangladesh, Afghanistan, Kuwait, Bhutan, Bahrain, Malaysia, Turkey, Taiwan, Macau, United Arab Emirates, Iran, Japan, Indonesia, Israel, Oman, Sri Lanka, Maldives, Qatar, Azerbaijan
Italy, Cyprus, Croatia, Germany, Switzerland, Serbia, Estonia, Azerbaijan, Moldova, Greece, Sweden, Turkey, Denmark, Latvia, Belgium, Austria, Romania, Spain, Netherlands, Liechtenstein, United Kingdom, Malta, Poland, Russia, Belarus, Lithuania, Hungary, Finland, Czechia/Czech Republic, Norway, Bulgaria, Luxembourg, Monaco, Ukraine, Slovakia, Portugal, Ireland, France
Liberia, Ethiopia, Mauritius, Egypt, Eswatini, Burundi, Niger, Tunisia, Cameroon, Mozambique, Madagascar, South Africa, Burkina Faso, Zimbabwe, Zambia, Nigeria, Gambia, Central African Republic, Namibia, Algeria, Rwanda, Kenya, Libya, Morocco, Angola, Uganda, Tanzania, Seychelles, Mauritania, Botswana, Senegal
Grenada, Belize, Dominican Republic, Jamaica, Saint Lucia, Barbados, Nicaragua, Haiti, Honduras, Dominica, Cuba, Bahamas, Canada, Guatemala, Saint Vincent and the Grenadines, Costa Rica, Panama, Trinidad and Tobago, Mexico, El Salvador, Antigua and Barbuda, United States of America
Chile, Ecuador, Uruguay, Argentina, Colombia, Bolivia, Suriname, Brazil, Venezuela, Paraguay, Peru, Guyana
