Vinit Stainless is a leading manufacturer and supplier of top-quality stainless steel products from its headquarters in Chennai, India. With its strong reputation for top-notch quality and reliability, Vinit Stainless excels in the manufacturing of premium-grade SS 309H flanges of international standards. Our highly advanced manufacturing units and trained staff guarantee precision-engineered parts made for durability and performance in challenging applications. Being a reliable brand in the stainless steel sector, we provide tailor-made solutions to address varied industrial needs, providing consistent quality, prompt service, and competitive costs to clients in India and abroad.
SS 309H flanges consist predominantly of chromium (22–24%), nickel (12–15%), with a carbon content of up to 0.06%–0.10%, and minor elements such as manganese, silicon, and phosphorus. This high-carbon type provides improved high-temperature strength. Mechanical properties comprise tensile strength of around 550 MPa, yield strength of around 205 MPa, and elongation of about 40%. SS 309H is also found with superior creep resistance and oxidation stability at higher temperatures, and thus it is a popular material in severe environments where structural resistance and thermal resistance are essential.
| Specifications | ASTM A240 / ASME SA240 |
| Thickness | 4mm-100mm |
| Width | 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc |
| Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc |
| Surface | 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hairline, sand blast, Brush, etching, etc |
| Finish | Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) |
| Form | Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) etc. |
| ASTM A182 GRADE | C | Mn | P | S | Si | Ni | Cr | Mo | Nb | Ti | Others |
|---|---|---|---|---|---|---|---|---|---|---|---|
| F304(1) | 0.08 | 2.0 | 0.045 | 0.030 | 1.0 | 8.0-11.0 | 18.0-20.0 | ||||
| F304H | 0.04-0.10 | 2.0 | 0.045 | 0.030 | 1.0 | 8.0-11.0 | 18.0-20.0 | ||||
| F304L(1) | 0.030 | 2.0 | 0.045 | 0.030 | 1.0 | 8.0-13.0 | 18.0-20.0 | ||||
| F304N(2) | 0.08 | 2.0 | 0.045 | 0.030 | 1.0 | 8.0-10.5 | 18.0-20.0 | ||||
| F304LN(2) | 0.030 | 2.0 | 0.045 | 0.030 | 1.0 | 8.0-10.5 | 18.0-20.0 | ||||
| F309H | 0.04-0.10 | 2.0 | 0.045 | 0.030 | 1.0 | 12.0-15.0 | 22.0-24.0 | ||||
| F310 | 0.25 | 2.0 | 0.045 | 0.030 | 1.0 | 19.0-22.0 | 24.0-26.0 | ||||
| F310H | 0.04-0.10 | 2.0 | 0.045 | 0.030 | 1.0 | 19.0-22.0 | 24.0-26.0 | ||||
| F310MoLN | 0.030 | 2.0 | 0.030 | 0.015 | 0.40 | 21.0-23.0 | 24.0-26.0 | 2.0-3.0 | N 0.10-0.16 | ||
| F316 | 0.08 | 2.0 | 0.045 | 0.030 | 1.0 | 10.0-14.0 | 16.0-18.0 | 2.0-3.0 | |||
| F316H | 0.04-0.10 | 2.0 | 0.045 | 0.030 | 1.0 | 10.0-14.0 | 16.0-18.0 | 2.0-3.0 | |||
| F316L(1) | 0.030 | 2.0 | 0.045 | 0.030 | 1.0 | 10.0-15.0 | 16.0-18.0 | 2.0-3.0 | |||
| F316N(2) | 0.08 | 2.0 | 0.045 | 0.030 | 1.0 | 11.0-14.0 | 16.0-18.0 | 2.0-3.0 | |||
| F316LN(2) | 0.030 | 2.0 | 0.045 | 0.030 | 1.0 | 11.0-14.0 | 16.0-18.0 | 2.0-3.0 | |||
| F316Ti | 0.08 | 2.0 | 0.045 | 0.030 | 1.0 | 10.0-14.0 | 16.0-18.0 | 2.0-3.0 | (3) | N 0.10 max | |
| F317 | 0.08 | 2.0 | 0.045 | 0.030 | 1.0 | 11.0-15.0 | 18.0-20.0 | 3.0-4.0 | |||
| F317L | 0.030 | 2.0 | 0.045 | 0.030 | 1.0 | 11.0-15.0 | 18.0-20.0 | 3.0-4.0 | |||
| F321 | 0.08 | 2.0 | 0.045 | 0.030 | 1.0 | 9.0-12.0 | 17.0-19.0 | (4) | |||
| F321H | 0.04-0.10 | 2.0 | 0.045 | 0.030 | 1.0 | 9.0-12.0 | 17.0-19.0 | (5) | |||
| F347 | 0.08 | 2.0 | 0.045 | 0.030 | 1.0 | 9.0-13.0 | 17.0-20.0 | (6) | |||
| F347H | 0.04-0.10 | 2.0 | 0.045 | 0.030 | 1.0 | 9.0-13.0 | 17.0-20.0 | (7) | |||
| F348 | 0.08 | 2.0 | 0.045 | 0.030 | 1.0 | 9.0-13.0 | 17.0-20.0 | (6) | Co 0.20 Ta 0.10 | ||
| F348H | 0.04-0.10 | 2.0 | 0.045 | 0.030 | 1.0 | 9.0-13.0 | 17.0-20.0 | (7) | Co 0.20 Ta 0.10 |
| ASTM A182 Grade | Minimum Tensile Strength in MPa | Minimum Yield point in Mpa | Minimum Elongation in % | Minimum Reduction of in min, % |
| Stainless Steel Flanges | 515 | 205 | 30 | 50 |
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