| Application: | Industrial， Construction， Etc. | Standard: | ASTM， AISI， DIN， EN， JIS， Etc. |
|---|---|---|---|
| Steel Grade: | 300 Series，304 304L 316 316L 310S 321 | Type: | Seamless，Welded |
| Thickness: | Customized | Length: | Customized |
| Outer Diameter: | 1/2′-8’， Max 304.8mm | Technique: | Cold Rolled Hot Rolled，Cold Drawn，welded，seamless |
| Surface: | Annealing，pickling，polishing，600 Grit Polished，Bright | Grade: | 304L 316 316L 310s 321 321H 347 347H |
| Material: | Stainless Steel | Package: | Wooden Box， Steel Pallet， Etc. |
| Shape: | Seamless Tube | Size: | Customized |
| Surface Treatment: | Polishing， Annealing， Pickling， Etc. | ||
| High Light: | TP321 ASTM A249 Tube， Welded ASTM A249 Tube， Seamless ASTM A249 Tube | ||
ASTM A249 TP321 Stainless Steel Welded Tube Super Heater And Heat Exchanger
TONG CHUANG is one of the famous stainless steel pipe suppliers， we provide these after checking all quality parameters by
our experienced and knowledgeable staff. We stock welded and seamless stainless steel tubing in a variety of industry
standard sizes. After more than 20 years of development， we have accumulated a large number of customers all over
the world， and TONG CHUANG products have also won unanimous praise from customers.
Grade A249 TP321 is one of the stainless steel alloys designed for high temperature applications. Specifically， this ASTM
specified A249 TP 321 grade is typically used for piping systems involving superheaters， boilers， heat exchangers，
or condensers. Stainless Steel 321 Erw is a titanium alloy grade. Titanium is often added to carbon steel grades with higher
carbon content， such as ASTM A249 Tp321， to stabilize carbides.
ASTM A249 321 Stainless Steel Welded Heat Exchanger Tubes
The titanium in ASTM A249 TP321 pipe alloy combines with the carbon content of the metal to form titanium carbide.
The titanium in ASTM A249 TP321 pipe alloy combines with the carbon content of the metal to form titanium carbide.
As a stable component， titanium carbide is difficult to dissolve in steel. This in turn helps minimize the occurrence of
intergranular corrosion. This is why A249 TP321 stainless steel welded pipe inherits its excellent welding performance.
Therefore， it has proven to be an indispensable alloy grade， especially in those applications where welding is the main
requirement. ASTM A249 TP321 Erw tubing produced to this specification must meet not only chemical requirements，
but also mechanical and testing parameters. Therefore， A249 TP321 welded pipe has a defined grain size when subjected
to reverse bending， tensile， flattening， flange， hardness， etc. tests， in addition to hydrostatic pressure testing or non-destructive
electrical testing if required .
Stainless Steel TP321 A249 Tubing Specification
| Outside diameter | 1/8"-5" |
| Thickness | 0.4 – 6 mm |
| Standard Specification | A249 TP321 Stainless Steel Welded Superheater， Condenser， Hydraulic， Boiler and Heat-Exchanger Tubes |
| Forms | Round， Coiled， Straight， "U" Tube， Honed Tubes， Pan Cake Coils |
| Manufacturing Type | ERW / Welded / CDW / CDS / DOM / Fabricated / CEW / 100% X Ray Welded |
| Delivery Condition | Annealed and Pickled (AP)， Polished， Bright Annealed (BA)， Cold Drawn， MF |
| Surface Finish | BA， 2B， No.4， No.1， No.3， No.8， 8K， HL， 2D， 1D， Mirror Polished， 180G， 320G， 400G Satin/ Hairline， 400G， 500G， 600G or 800G Mirror finish JIS SA 249 TP 321 Tubing or Custom Finish as per customer's specification |
| Temperature range | 950-1120°C |
| Standard | SUS， JIS， AISI， ASTM， GB， DIN， EN |
| Value Added Services |
|
| Processing Service | Bending， Welding， Decoiling， Punching， Cutting， Moulding |
| Technique | ASTM A249 TP321 Stainless Steel Cold drawn， Cold rolled， Hot rolled， Extrusion Tube |
| Test Certificate |
|
| Uses & Application |
|
ASTM A249 321 SS Tubing Mechanical Properties
| A249 TP | TENSILE STRESS (MPA) | YIELD STRESS (MPA) | ELONGATION(%) | HARDNESS(HRB) |
|---|---|---|---|---|
| 321 | 520 | 205 | 40 | 90 |
SS UNS S32100 SA 249 Tube Chemical Composition
| SA 249 | C | SI | MN | P | S | CR | NI | TI | N |
|---|---|---|---|---|---|---|---|---|---|
| TP321 | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 17.0/19.0 | 9.0/12.0 | 5 X C Min – 0.70 Max | 0.10 |
ASTM A249 SS 321 Equivalent
| AISI/ SUS | UNS | WNR. / DIN | EN | JIS | GB |
|---|---|---|---|---|---|
| 321 | 32100 | 1.4541 | X6CrNiTi18-10 | SUS321 | 0Cr18Ni10Ti |
