Riddhi Siddhi Metal Impex is one of the leading Stainless Steel Flanges & Stainless Steel Buttweld Fittings Manufacturer in Mumbai, India. Our Products have been designed under the national and international industry rules using high-grade raw materials and advanced technology. Our Stainless Steel and other products have a minimum of 5 years warranty. Riddhi Siddhi Metal Impex is the world-leading exporter of Stainless Steel Reducer Expander. 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.
Stainless Steel Buttweld Fittings Manufacturer, Stainless Steel Flanges Supplier, Stainless Steel Gasket Exporter, ASME SA403 Buttweld Fittings Dealer in India
Stainless Steel products are exclusively designed for several piping applications in various industries. We are also known as one of the Largest Suppliers of high-quality Stainless Steel Flanges, Stainless Steel Buttweld Fitting, Stainless Steel Reducer Expander, 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 Carbon Steel..
Types of Stainless Steel
Stainless Steel Grades Chart
| Grade | UNS No | BS | Euronorm No. |
| 301 | S30100 | 301S21 | 1.4310 |
| 302 | S30200 | 302S25 | 1.4319 |
| 303 | S30300 | 303S31 | 1.4305 |
| 304 | S30400 | 304S31 | 1.4301 |
| 304L | S30403 | 304S11 | 1.4306 |
| 304H | S30409 | – | 1.4948 |
| (302HQ) | S30430 | 394S17 | 1.4567 |
| 305 | S30500 | 305S19 | 1.4303 |
| 309S | S30908 | 309S24 | 1.4833 |
| 310 | S31000 | 310S24 | 1.4840 |
| 310S | S31008 | 310S16 | 1.4845 |
| 314 | S31400 | 314S25 | 1.4841 |
| 316 | S31600 | 316S31 | 1.4401 |
| 316L | S31603 | 316S11 | 1.4404 |
| 316H | S31609 | 316S51 | – |
| 316Ti | S31635 | 320S31 | 1.4571 |
| 321 | S32100 | 321S31 | 1.4541 |
| 347 | S34700 | 347S31 | 1.4550 |
| 403 | S40300 | 403S17 | 1.4000 |
| 405 | S40500 | 405S17 | 1.4002 |
| 409 | S40900 | 409S19 | 1.4512 |
| 410 | S41000 | 410S21 | 1.4006 |
| 416 | S41600 | 416S21 | 1.4005 |
| 420 | S42000 | 420S37 | 1.4021 |
| 430 | S43000 | 430S17 | 1.4016 |
| 440C | S44004 | – | 1.4125 |
| 444 | S44400 | – | 1.4521 |
| 630 | S17400 | – | 1.4542 |
| (904L) | N08904 | 904S13 | 1.4539 |
| (253MA) | S30815 | – | 1.4835 |
| (2205) | S31803 | 318S13 | 1.4462 |
| (3CR12) | S41003 | – | 1.4003 |
| (4565S) | S34565 | – | 1.4565 |
| (Zeron100) | S32760 | – | 1.4501 |
| (UR52N+) | S32520 | – | 1.4507 |
Stainless Steel Chemical Composition Chart
| SS. | 200 | 202 | 301 | 302 | 302B | 303 | 303Se | 304 | 304L | 305 | 308 | 309 | 309s | 310 | 310s | 314 | 316 | 316L | 317 | 321 | 347 |
| Carbon | 0.12 | 0.12 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.08 | 0.03 | 0.12 | 0.08 | 0.20 | 0.08 | 0.25 | 0.08 | 0.25 | 0.08 | 0.03 | 0.08 | 0.08 | 0.08 |
| Manganese | 7.5/10 | 5.5/7.5 | 2.00 | 2.00 | 2.00 | 2.00 | 2.002.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 |
| Silicone | 0.9 | 0.9 | 1.00 | 1.00 | 2.0/3.0 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.5 | 1.5 | 1.5/3.0 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Chromium | 14/16 | 16/18 | 16/18 | 17/19 | 17/19 | 17/19 | 17/19 | 18/20 | 18/02 | 17/19 | 19/21 | 22/24 | 22/24 | 24/26 | 24/26 | 24/26 | 23/26 | 16/18 | 18/20 | 17/19 | 17/19 |
| Nickel | 0.5/2.0 | 0.5/4.0 | 6.0/8.0 | 8.0/10 | 8.0/10 | 8.0/10 | 8.0/10 | 8.0/12 | 8.0/12 | 10/13 | 10/12 | 12/15 | 12/15 | 19/22 | 19/22 | 19/22 | 10/14 | 10/14 | 11/15 | 9.0/12 | 9/13 |
| Molybdenum | 0.2 | 0.2 | 2.0/3.0 | 2.0/3.0 | 3.0/4.0 | ||||||||||||||||
| Phosphorus | 0.06 | 0.06 | 0.045 | 0.045 | 0.045 | 0.20 | 0.20 | 0.045 | 0.045 | 0.045 | 0.045 | 0.045 | 0.045 | 0.045 | 0.045 | 0.045 | 0.045 | 0.045 | 0.045 | 0.045 | 0.045 |
| Nitrogen | 0.25 | 0.25 | |||||||||||||||||||
| Sulfur | 0.03 | 0.03 | 0.03 | 0.15MIN | – | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | ||
| Selenium | 0.15MIN | ||||||||||||||||||||
| Aluminium | |||||||||||||||||||||
| Titanium | 5XC | ||||||||||||||||||||
| Cb+Ta | 10XC | ||||||||||||||||||||
| Tensile Strength |
105 | 105 | 110 | 90 | 95 | 90 | 90 | 85 | 60 | 85 | 85 | 90 | 90 | 95 | 95 | 100 | 85 | 78 | 90 | 87 | 92 |
| 2% Yield Strength |
55 | 55 | 40 | 37 | 40 | 35 | 35 | 35 | 30 | 37 | 35 | 40 | 40 | 40 | 40 | 50 | 35 | 30 | 40 | 35 | 35 |
| Elongation in 2′ |
55 | 55 | 60 | 55 | 50 | 50 | 50 | 55 | 55 | 55 | 55 | 45 | 45 | 45 | 45 | 45 | 55 | 55 | 50 | 55 | 50 |
| Rockwell | 90 | 90 | 85 | 82 | 85 | 84 | 84 | 80 | 76 | 82 | 80 | 85 | 85 | 87 | 87 | 87 | 80 | 76 | 85 | 80 | 84 |
| Brinell | 185 | 185 | 165 | 155 | 165 | 160 | 160 | 150 | 140 | 156 | 150 | 165 | 165 | 170 | 170 | 170 | 150 | 145 | 160 | 150 | 160 |
| En58M | En58E | 150-801C | En58J&H | En58C | |||||||||||||||||
| X12 CrNi17.7 |
X2 CrNi18.8 |
X5 CrNi18.9 |
X5 CrNi18.8 |
X12 CrNi18.8 |
x5 CrNiMo18.12 |
X2 CrNiMo19.1 |
X10 CrNiMo18.9 |
||||||||||||||
| AUST. | AUST. | AUST. | AUST. | AUST. | AUST. | AUST. | AUST. | AUST. | AUST. | AUST. | AUST. | AUST. | AUST. | AUST. | AUST. | AUST. | AUST. | AUST. | AUST. |
Stainless Steel Mechanical Composition Chart
| Grade | Tensile Strength Mpa, (Min) |
Yield Strength Mpa, (Min) |
%Age Elongation in 50mm gauge length min |
Hardness (Max) | |
| BHN | Rb | ||||
| 301 | 515 | 205 | 40 | 217 | 95 |
| 304 | 515 | 205 | 40 | 201 | 92 |
| 304L | 485 | 170 | 40 | 201 | 92 |
| 310S | 515 | 205 | 40 | 217 | 95 |
| 316 | 515 | 205 | 40 | 217 | 95 |
| 316L | 485 | 170 | 40 | 217 | 95 |
| 317 | 515 | 205 | 35 | 217 | 95 |
| 317L | 515 | 205 | 40 | 217 | 95 |
| 321 | 515 | 205 | 40 | 217 | 95 |
| 347 | 515 | 205 | 40 | 201 | 92 |
| 409 | 380 | 170 | 20 | 179 | 88 |
| 409M | 430 | 275 | 20 | 187 | 90 |
| 410S | 415 | 205 | 22 | 183 | 89 |
| 410 | 450 | 205 | 20 | 217 | 89 |
| 420 | 700( max ) | – | 15 | 217 | 95 |
| 430 | 450 | 205 | 22 | 183 | 89 |
| JSL AUS | 515 | 205 | 40 | 217 | 95 |
| JS- 203 | 515 | 205 | 40 | 217 | 95 |
| 301M | 515 | 205 | 40 | 217 | 95 |
