Stainless Steel 321/321H Forged Fittings Manufacturer and Supplier in Chennai, India
Based in Chennai, India, we proudly stand as a top manufacturer and supplier of **Stainless Steel 321/321H Forged Fittings**. Our premium-quality forged components are specifically designed to thrive in high-temperature, high-pressure, and corrosive environments. Thanks to titanium stabilization, these fittings are perfect for applications that experience frequent thermal cycling and welding. You’ll find SS 321/321H forged fittings widely utilized across various industries, including petrochemical, aerospace, power generation, and chemical processing. We leverage advanced forging technology and adhere to international standards to ensure our fittings deliver durability, corrosion resistance, and leak-proof performance. Our commitment to reliable delivery, custom solutions, and trusted product quality has earned us clients around the globe.
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Stainless Steel 321/321H Forged Fittings Specification
Specifications ASTM A182 & ASME SA182
Standard ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799
Size 1/8” NB to 4” NB (Socketweld & Screwed-Threaded)
Class 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS
Type Socketweld Fittings, Screwed-Threaded Fittings
Forged Fittings Items : 45 Deg Elbow, 90 Deg Elbow, Forged Tee, Union, Full Coupling, Half Coupling, Cross, Cap, Swage Nipple, Plug, Bush, Welding Boss, Hexagonal Nipple etc.
Type Socketweld Fittings, Screwed-Threaded Fittings
Grade 321 / 321H UNS (S32100, S32109), DIN (1.4541, 1.4878)
**Stainless Steel 321/321H Forged Fittings** are a type of titanium-stabilized austenitic stainless steel, containing 17–19% chromium and 9–12% nickel. The 321H variant features a higher carbon content (0.04–0.10%), which enhances creep strength and durability at elevated temperatures. These fittings boast excellent resistance to intergranular corrosion and can withstand oxidation up to 870°C. Their mechanical properties include a tensile strength of 515 MPa, yield strength of 205 MPa, and an elongation of 40%. We offer a variety of types, including forged elbows, tees, couplings, unions, crosses, and caps, all crafted for reliable service in pressure-bearing and thermally stressed systems.
Stainless Steel 321/321H Forged Fittings Chemical Compostion
| Grade | C | Mn | Si | P | S | Cr | N | Ni | Ti |
| SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 5(C+N) – 0.70 max |
| SS 321H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 4(C+N) – 0.70 max |
Stainless Steel 321/321H Forged Fittings Mechanical Properties
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1457 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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Largest Stainless Steel 321/321H Forged Fittings Supplier in Chennai, India
Meet Fittings is a leading supplier of Stainless Steel 321/321H Forged Fittings in Chennai, India. We offer an extensive range of Stainless Steel 321/321H Forged Fittings, renowned for their excellent corrosion resistance and high strength, which makes them perfect for demanding industrial applications like chemical processing, marine environments, and high-temperature systems. With a commitment to quality and reliable delivery, we ensure our clients receive top-tier products tailored to meet the specific needs of various industries.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
If You Are Looking To Buy High Quality
Stainless Steel 321/321H Forged Fittings Equivalent Grade
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
| SS 321 | 1.4541 | S32100 | SUS 321 | X6CrNiTi18-10 |
| SS 321H | 1.4878 | S32109 | SUS 321H | X12CrNiTi18-9 |
Why Choose Stainless Steel 321/321H Forged Fittings from Meet Fittings?
Choose Stainless Steel 321/321H Forged Fittings from Meet Fittings for superior quality, exceptional corrosion resistance, and reliable performance in extreme conditions. We offer customized solutions backed by expert support and industry experience.
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Largest Inventory
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ISO Certified
Stainless steel 321/321H forged fittings offer many advantages, including resistance to high temperature oxidation and corrosion, making them ideal for use in high-temperature environments The addition of titanium stabilizes the material, especially prevents sensitivity and intergranular corrosion in welds. These fittings have excellent strength, high tensile and yield characteristics, and excellent formability, ensuring durability and long-term performance in critical applications Stainless steel 321H, with a high carbon content of 1,000. for higher strength at higher temperatures. Overall, they are highly reliable in the petroleum, aerospace, and power sectors.
Types of Stainless Steel 321/321H Forged Fittings
Are Custom Sizes Available for Stainless Steel 321/321H Forged Fittings?
Yes, custom sizes for Stainless Steel 321/321H Forged Fittings are available at Meet Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@meetfitings.co.in
Stainless Steel 321 / 321H Pressure Rating
| Fitting Schedule/Class | Pipe Size – Pipe Fitting | Fitting Connection Type | Pipe Fitting Material | Max. Pressure |
|---|---|---|---|---|
| Class 150 | 1/2″ | FNPT | Stainless Steel 321 | 150 psi |
| Class 150 | 1/2″ | FNPT | Stainless Steel 321 | 150 psi |
| Class 150 | 1/2″ | Forged | Forged Stainless Steel 321 | 275 psi |
| Class 150 | 1/2″ | Welded | Stainless Steel 321 | 150 psi |
| Class 150 | 3/4″ | FNPT | Stainless Steel 321 | 150 psi |
| Class 150 | 3/4″ | FNPT | Stainless Steel 321 | 150 psi |
| Class 150 | 3/4″ | Forged | Forged Stainless Steel 321 | 275 psi |
| Class 150 | 3/4″ | Welded | Stainless Steel 321 | 150 psi |
| Class 150 | 3/4″ | Welded | Stainless Steel 321 | 150 psi |
| Class 150 | 1″ | FNPT | Stainless Steel 321 | 150 psi |
| Class 150 | 1″ | FNPT | Stainless Steel 321 | 150 psi |
| Class 150 | 1″ | Forged | Forged Stainless Steel 321 | 275 psi |
| Class 150 | 1″ | Welded | Stainless Steel 321H | 150 psi |
| Class 150 | 1″ | Welded | Stainless Steel 321 | 150 psi |
| Class 150 | 1-1/4″ | FNPT | Stainless Steel 321 | 150 psi |
| Class 150 | 1-1/4″ | FNPT | Stainless Steel 321 | 150 psi |
| Class 150 | 1-1/4″ | Forged | Forged Stainless Steel 321 | 275 psi |
| Class 150 | 1-1/4″ | Welded | Stainless Steel 321H | 150 psi |
| Class 150 | 1-1/4″ | Welded | Stainless Steel 321H | 150 psi |
| Class 150 | 1-1/2″ | FNPT | Stainless Steel 321 | 150 psi |
| Class 150 | 1-1/2″ | FNPT | Stainless Steel 321 | 150 psi |
| Class 150 | 1-1/2″ | Forged | Forged Stainless Steel 321H | 275 psi |
| Class 150 | 1-1/2″ | Welded | Stainless Steel 321H | 150 psi |
| Class 150 | 1-1/2″ | Welded | Stainless Steel 321 | 150 psi |
| Class 150 | 2″ | FNPT | Stainless Steel 321 | 150 psi |
| Class 150 | 2″ | FNPT | Stainless Steel 321 | 150 psi |
| Class 150 | 2″ | Forged | Forged Stainless Steel 321H | 275 psi |
| Class 150 | 2″ | Welded | Stainless Steel 321 | 150 psi |
| Class 150 | 2″ | Welded | Stainless Steel 321 | 150 psi |
| Class 150 | 2-1/2″ | FNPT | Stainless Steel 321 | 150 psi |
| Class 150 | 2-1/2″ | FNPT | Stainless Steel 321 | 150 psi |
| Class 150 | 2-1/2″ | Forged | Forged Stainless Steel 321 | 275 psi |
| Class 150 | 2-1/2″ | Welded | Stainless Steel 321H | 150 psi |
| Class 150 | 2-1/2″ | Welded | Stainless Steel 321 | 150 psi |
| Class 150 | 3″ | FNPT | Stainless Steel 321 | 150 psi |
| Class 150 | 3″ | FNPT | Stainless Steel 321 | 150 psi |
| Class 150 | 3″ | Forged | Forged Stainless Steel 321H | 275 psi |
| Class 150 | 3″ | Welded | Stainless Steel 321 | 150 psi |
| Class 150 | 4″ | FNPT | Stainless Steel 321 | 150 psi |
| Class 150 | 4″ | FNPT | Stainless Steel 321 | 150 psi |
| Class 150 | 4″ | Forged | Forged Stainless Steel 321H | 275 psi |
| Class 150 | 4″ | Welded | Stainless Steel 321 | 150 psi |
| Class 150 | 4″ | Welded | Stainless Steel 321 | 150 psi |
| Class 150 | 6″ | FNPT | Stainless Steel 321 | 150 psi |
| Class 150 | 6″ | FNPT | Stainless Steel 321 | 150 psi |
| Class 150 | 6″ | Welded | Stainless Steel 321H | 150 psi |
| Class 150 | 6″ | Welded | Stainless Steel 321 | 150 psi |
Weight Chart of Stainless Steel 321 / 321H Forged Fittings
| DN-NPT | MAJOR DIAMETER MM | TAPPING DRILL SIZE MM | TPI | PITCH MM |
|---|---|---|---|---|
| 1/16″ | 7.895 | 6.00 | 27 | 0.941 |
| 1/8″ | 10.242 | 8.25 | 27 | 0.941 |
| 1/4″ | 13.616 | 10.70 | 18 | 1.411 |
| 3/8″ | 17.055 | 14.10 | 18 | 1.411 |
| 1/2″ | 21.223 | 17.40 | 14 | 1.814 |
| 3/4″ | 26.568 | 22.60 | 14 | 1.814 |
| 1″ | 33.228 | 28.50 | 11.5 | 2.209 |
| 1¼” | 41.985 | 37.00 | 11.5 | 2.209 |
| 1½” | 48.054 | 43.50 | 11.5 | 2.209 |
| 2″ | 60.092 | 55.00 | 11.5 | 2.209 |
| 2½” | 72.699 | 65.50 | 8 | 3.175 |
| 3″ | 88.608 | 81.50 | 8 | 3.175 |
| 3½” | 101.316 | 94.30 | 8 | 3.175 |
| 4″ | 113.973 | 107.00 | 8 | 3.175 |
| 5″ | 141.300 | 134.384 | 8 | 3.175 |
| 6″ | 168.275 | 161.191 | 8 | 3.175 |
| 8″ | 219.075 | 211.673 | 8 | 3.175 |
| 10″ | 273.050 | 265.311 | 8 | 3.175 |
| 12″ | 323.850 | 315.793 | 8 | 3.175 |
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Application Industry of Stainless Steel 321/321H Forged Fittings
**Stainless Steel 321/321H Forged Fittings** are particularly well-suited for environments that involve high heat and corrosive substances. They excel in applications like heat exchangers, furnace components, exhaust systems, boiler tubes, and thermal oxidizers. The titanium stabilization effectively prevents carbide precipitation during welding, making these fittings ideal for welded structures that face high temperatures. The SS 321H variant provides additional strength for applications that require extended exposure to elevated temperatures. Their forged construction not only enhances strength but also ensures integrity, guaranteeing long-term reliability in pipelines and equipment used in demanding conditions.
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