The SS 321/321H Pipe Fittings are designed and supplied by Max Steel at the most affordable rates. These pipe fittings are made per the specifications and dimensions of the client side. These pipe fittings are used in domestic and commercial applications for various purposes. This fitting is designed in compliance with national and international standards. Our customers widely acclaim it for its precise design, accurate dimensions, durability, superior finish, and corrosion resistance. Before starting manufacturing, we procure everything from our customers and brands to provide the finest quality of pipe fitting as per their requirements.
The SS 321/ 321H is austenitic stainless steel with little titanium alloy added. The presence of titanium reduces the risk of carbon precipitation during welding. This steel grade is widely used in high-temperature applications and provides higher-temperature strength. This grade of SS has good forming and welding properties; it can easily be cut and fabricated into any desired length. The SS 321 H is also referred to as UNS S32109.
The main benefits of using SS 321/321H Buttweld Pipe Fittings are that we offer good creep strength, excellent resistance to oxidation and corrosion, readily formed and drawn, and improved resistance to intergranular corrosion.
This ASTM A403 Stainless Steel 321 Buttweld Fittings is carefully supplied without any defect or an external defect. Mostly, pipe fitting is the foil in plastic wraps and packed in wooden cases or boxes to prevent it from rust. Place your order from Max Steel to get the best quality pipe fitting.
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
| SS 321 | 1.4878 | S32100 | SUS 321 | X6CrNiTi18-10 |
| SS 321H | 1.4878 | S32109 | SUS 321H | X12CrNiTi18-9 |
Specifications : ASTM A403 / ASME SA403
Dimensions : ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Size : 1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated)
Type : Seamless / Welded / Fabricated
Bending Radius : R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Thickness : Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS
ASME B16.9 - The ASME B16.9 specification covers the dimensions and the tolerances of stainless and alloy butt weld fittings.
ASME B16.28 - ASME B16.28 Standard covers ratings, overall dimensions, testing, tolerances, and markings for wrought carbon and alloy steel buttwelding short radius elbows and returns.
MSS-SP-43 - This Standard Practice covers only fittings made for use with Schedule 5S or 10S pipe, for all NPS sizes listed in ASME B36.19M, except that for short pattern stub ends suitable for use with Schedule 40S are also shown.
ASTM A403 - This specification covers the standard for wrought austenitic stainless steel fittings for pressure piping applications.
| 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 |
| 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 % |
Corrosion resistant
Durable functioning
Malleable
Heat resistance
High strength
Excellent conductivity
Impeccable finish
Enhanced service life
Precisely designed
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