Home / Stainless Steel Products / SS 321/321H Pipes
A few fundamental features of Stainless steel 321 Rectangular Pipes are that they are cost effective fitting, leak proof, high tensile strength and long service life. Buy Stainless steel 321 Square Pipe at reasonable cost from us. In order to provide optimum resistance to intergranular corrosion and to polythionic acid stress corrosion cracking in service temperatures at 1500 – 1650 Degree F an air cool may be used in this SS 321 Round Pipes. Meanwhile, this SS 321 ERW Pipe is generally considered to have comparable weldability to 304 and 304L stainless with the main difference being the titanium addition which reduces or prevents carbide precipitation during welding. This titanium addition in Stainless steel 321 EFW Pipes reduces or prevents carbide precipitation during welding and in the 800 – 1500 Degree F service conditions.
Stainless steel 321 Welded Pipe is similar to type 304 stainless but with a titanium addition of at least five times the carbon content. SS 321 Seamless Pipe cannot be hardened by thermal treatment. SS 321H Pipes is a heat resistant, titanium stabilized, austenitic alloy that's commonly used for service in the 1000 – 1600 Degree F temperature range. Stainless steel 321 Pipes is readily welded by all common methods including submerged arc. We are a distinguished supplier and stockiest of SS 321 / 321H Pipe, where we offer the same at standard and customized sizes.
Equivalent Grades for 321/321H Stainless Steel Pipe
Grade | North America | France | European | Japan | Russia | European | Italy | Austria | Sweden |
UNS | AFNOR | W.N. | JIS | GOST | EN | UNI | ONORM | SIS | |
SS 321 | S32100 | – | 1.4541 | SUS 321 | – | X6CrNiTi18-10 | – | – | – |
321/321H SS Welded Pipes Chemical Composition
Grade | C | Mn | Si | P | S | Cr | N | Ni | Tie |
SS TP 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 |
Stainless Steel 321/321H Seamless Pipe 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 % |
NOTE : OTHER SIZES AND GRADES ARE AVAILABLE UPON REQUEST
321/321H Welded Pipes are available in different grades and standards. Some of the standard features
these are made available in include
Specifications : ASTM A 312 ASME SA 312 / ASTM A 358 ASME SA 358
Dimensions : ASTM, ASME and API
Size : 1/8″NB TO 30″NB IN
SS Pipes : 1/2″ NB – 16″ NB
SS ERW Pipes : 1/2″ NB – 24″ NB
SS EFW Pipes : 6″ NB – 100″ NB
Specialized in : Large Diameter Size
Schedule : SCH20, SCH30, SCh30, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160,
XXS
Form : Round, Square, Rectangular, Hydraulic Etc
Length : Single Random, Double Random & Cut Length
End : Plain End, Beveled End, Treaded
Type : Seamless / ERW / Welded / Fabricated / LSAW Pipes
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