A403 Stainless Steel 321h Buttweld Long & Short Radius 45°, 90° Elbow, Tee, WNR 1.4878 End Cap, UNS S32109 U Bend Pipe Fittings : ASTM A403 WP321h

321h Stainless Steel Pipe Fittings
Torrent Alloys
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321h SS BW 180 degree Elbow Specifications

  • Dimensions:

    ASME/ ANSI B16.9 | ASME B16.28 | MSS-SP-43 | BS1560 | BS4504 | BS10.

  • Size:

    1/2"NB TO 48"NB IN.

  • Type:

    Seamless and Welded.

  • Thickness:

    Schedule 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS.

  • Form:

    Elbow, Equal Tee, U Pipe Bend, Long & Short Stub End, Caps, Lap Joint Stub End

  • ASTM Standard / Grades:

    ASTM A403 / ASME SA403 304, 304L, 304H, 316, 316L, 316H, 316Ti, 310, 310s, 310h, 317, 317L, 321, 321h, 347, 347h, 904L

Specialist in Manufacturer of 321h Stainless Steel Long & Short Stub End, JIS SUS321H Tee Fittings, DIN 1.4878 Lap Joint Stub End, EN X10CrNiTi18-10 Piggable Bend, GOST 08Х18Н10Т Hot Induction Bend, BS 321S51 pipe fittings

321H SS Buttweld Fittings are crafted from stainless steel grade 321H, distinguished by its higher carbon content (0.04-0.10%) compared to standard 321. This elevated carbon level enhances the fittings' creep resistance and mechanical properties at elevated temperatures, making them ideal for applications demanding robust performance under high heat and corrosive conditions.

ASTM A403 WP321H Fittings, designated as "WP" for wrought pipe, are manufactured through either seamless or welded processes, adhering strictly to ASTM A403 standards. They undergo meticulous dimensional checks, material testing, and non-destructive inspections to ensure compliance with stringent industry requirements for dimensions, mechanical properties, and performance reliability.

Manufacturing ASTM A403 WP321H pipe fittings involves starting with high-quality stainless steel grade 321H. These fittings are typically formed through processes like hot forging or cold forming to achieve the desired shape and dimensions. Precision machining ensures accurate sizing and smooth finishes, followed by welding using appropriate techniques to maintain corrosion resistance. Heat treatment may be applied to relieve stresses and optimize mechanical properties. Quality control measures ensure compliance with ASTM A403 standards, ensuring these fittings meet stringent requirements for reliability and performance in high-temperature and corrosive environments.

The benefits of using 321h stainless steel stub ends lie in their exceptional corrosion resistance and high temperature stability. Stub ends, made from stainless steel grade 321, are ideal for applications where reliability under extreme conditions is crucial. They provide strong, leak-proof connections in piping systems, particularly in industries such as chemical processing, aerospace, and thermal processing, where resistance to corrosion and durability are paramount. The alloy's titanium stabilization enhances its resistance to sensitization and intergranular corrosion, ensuring long-term performance and minimal maintenance requirements in demanding environments.

ASME B16.9 / B16.28 Standards
MSS SP-43 Standards
DIN Standards
EN Standards
JIS Standards
BS Standards

Equivalent Grades of Stainless Steel 321h pipe Fittings

ASTM EN (DIN) JIS UNS GOST BS AFNOR
321H 1.4878 (X10CrNiTi18-10) SUS321H S32109 - 321S51 -

Chemical Composition of 321h SS 45 degree, 90 degree Elbow

Grade C (max) Mn (max) Si (max) P (max) S (max) Cr Ni Mo N Other Elements
321H 0.04-0.10 2.00 0.75 0.045 0.030 17.0-19.0 9.0-12.0 - - Ti: 4(C+N)-0.7

Mechanical Properties of 321h Buttweld Tee

Grade Yield Strength (MPa) Tensile Strength (MPa) Elongation (%) Hardness (Rockwell B)
321H 205 515-750 40 70-90

APPLICATIONS INDUSTRIES

321H pipe fittings find extensive use in industries requiring robust performance under high temperatures and corrosive environments. They are commonly employed in chemical processing plants for handling acids and chemicals, in aerospace applications for components exposed to elevated temperatures and oxidation, and in thermal processing equipment where durability and heat resistance are essential.

Oil and Gas Industry
Chemical and Petrochemical Industry
Power Generation
Water Treatment
Food and Beverage Industry
Pharmaceutical Industry
Pulp and Paper Industry
Shipbuilding and Marine Industry
HVAC - Heating, Ventilation, and Air Conditioning