Riddhi Siddhi Metal Impex is one of the leading Duplex Steel Flanges manufacturers in Mumbai, 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.
Alloy Steel Buttweld Fittings Manufacturer, Duplex Steel Flanges Supplier, Alloy Steel Gasket Exporter, ASME SA234M 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 Alloy Steel Forged Fittings, Alloy Steel Filteration suppliers, Alloy Steel Filteration, and many more. Alloy Steel Flanges are defined as one of the essential parts of the Pipe Fitting Industry. We are also known as one of the Largest Suppliers 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 | |
| S31260 | 485 (70) |
690 (100) |
20 | 290 | – | |
| S32001 | 450 (65) |
620 (90) |
25 | – | 25 HRC | |
| S32003 | 485 (70) thickness <=0.187” 450 (65) thickness >=0.187” |
690 (100) thickness <=0.187” 655 (95) thickness >=0.187” |
25 | 293 | 31 HRC | |
| S32101 | 530 (77) thickness <=0.187” 450 (65) thickness >0.187” |
700 (101) thickness <=0.187” 650 (94) thickness >0.187” |
25 | 293 | 31 HRC | |
| S32202 | 450 (65) |
650 (94) |
30 | 290 | – | |
| 2304 | S32304 | 400 (58) |
600 (87) |
25 | 290 | 32 HRC |
| 2205 | S31803 | 450 (65) |
620 (90) |
25 | 293 | 31 HRC |
| 2205 | S32205 | 450 (65) |
655 (95) |
25 | 293 | 31 HRC |
| S32506 | 450 (65) |
620 (90) |
18 | 302 | 32 HRC | |
| S32520 | 550 (80) |
770 (112) |
25 | 310 | – | |
| 255 | S32550 | 550 (80) |
760 (110) |
15 | 302 | 32 HRC |
| 2507 | S32750 | 550 (80) |
795 (116) |
15 | 310 | 32 HRC |
| S32760 | 550 (80) |
750 (108) |
25 | 270 | – | |
| S32808 | 500 (72) |
700 (101) |
15 | 310 | 32 HRC | |
| S32906 | 650 (94) thickness <0.4” 550 (80) thickness >=0.4” |
800 (116) thickness <0.4” 750 (109) thickness >=0.4” |
25 | 310 | 32 HRC | |
| S32950 | 485 (70) |
690 (100) |
15 | 293 | 32 HRC | |
| S39274 | 550 (80) |
800 (116) |
15 | 310 | 32 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 | |
