Riddhi Siddhi Metal Impex is one of the leading Duplex Steel Flanges Manufacture in India. Our Products have been designed according to the national and international industry rules by using high-grade raw materials and advanced technology. Our ASME SA815M Duplex Steel and other products are subjected to various quality checks, and then goes for packaging. Riddhi Siddhi Metal Impex is the world-leading exporter of Duplex Steel Flanges. We have a ready stock of Stainless Steel of different sizes and shapes per the customers’ requirements. We treat our customers as partners by providing them with our products and solutions.
Duplex Steel Buttweld Fittings Manufacturer, Duplex Steel Flanges Supplier, Duplex Steel Gasket Exporter, ASME SA815M Duplex Buttweld Fittings Dealer in India
Duplex Steel Flanges is exclusively designed for several piping applications of various industries. We are also known as one of the Largest Suppliers of high-quality Duplex steel buttweld fittings, Duplex flanges manufacturers, Duplex steel Gasket Manufacturers, and many more. Stainless Steel Flange is defined as one of the essential parts of the Pipe Fitting Industry. We are also known as one of the Largest Suppliers of Super Duplex Steel.
Types of Duplex Steel
Duplex Steel Grades Chart
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 2205 (S31803) | Min
Max |
–
0.030 |
–
2.00 |
–
1.00 |
–
0.030 |
–
0.020 |
21.0
23.0 |
2.5
3.5 |
4.5
6.5 |
0.08
0.20 |
| 2205 (S32205) | Min
Max |
–
0.030 |
–
2.00 |
–
1.00 |
–
0.030 |
–
0.020 |
22.0
23.0 |
3.0
3.5 |
4.5
6.5 |
0.14
0.20 |
Duplex Steel Chemical Composition Chart
| Element | Percent by Weight | |
|---|---|---|
| Cr | Chromium | 22.0 – 23.0% |
| Ni | Nickel | 4.5 – 6.5% |
| Mn | Manganese | 2.0% max |
| Si | Silicon | 1.0% max |
| P | Phosphorous | 0.03% max |
| S | Sulfur | 0.02% max |
| C | Carbon | 0.03% max |
| N | Nitrogen | 0.1 – 0.2% |
| Mo | Molybdenum | 3.0 – 3.5% |
| Fe | Iron | Balance |
ASTM A182 F5 Duplex Steel Mechanical Composition Chart
| Common Name | UNS No. | Yield Strength MPa (KSI) |
Tensile Strength MPa (KSI) |
Elongation (%) |
Hardness, Max | |
|---|---|---|---|---|---|---|
| Brinell | Rockwell B | |||||
| S31200 | 450 (65) |
690 (100) |
25 | 293 | 31 HRC | |
| S82011 | 515 (75) thickness <=0.187” 450 (65) thickness >0.187” |
700 (101) thickness <=0.187” 655 (95) thickness >0.187” |
30 | 293 | 31 HRC | |
