ASTM A249 TP321 Stainless Steel Welded Tube Super Heater And Heat Exchanger
Yuhong is one of the leading stainless steel pipe suppliers, providing products that undergo rigorous quality checks by our experienced and knowledgeable staff. We stock welded and seamless stainless steel tubing in various industry standard sizes. With over 20 years of development, we have built a global customer base and earned unanimous praise for Yuhong products.
Product Overview
Grade A249 TP321 is a stainless steel alloy specifically designed for high-temperature applications. This ASTM-specified grade is commonly used in piping systems for superheaters, boilers, heat exchangers, and condensers. Stainless Steel 321 ERW is a titanium-stabilized grade where titanium combines with carbon to form titanium carbide, minimizing intergranular corrosion and providing excellent welding performance.
ASTM A249 TP321 welded pipe must meet comprehensive chemical, mechanical, and testing parameters, including reverse bending, tensile, flattening, flange, hardness tests, and hydrostatic pressure testing or non-destructive electrical testing as 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
- Cutting
- Beveling
- Threading
- Polishing (Electro & Commercial)
- Draw & Expansion as per required Size & Length
- Destructive and Non Destructive Testing
- Ultrasonic Testing
- Annealed & Pickled Bending
Processing Services
Bending, Welding, Decoiling, Punching, Cutting, Moulding
Manufacturing Technique
ASTM A249 TP321 Stainless Steel Cold drawn, Cold rolled, Hot rolled, Extrusion Tube
Test Certificates
- 100% Radiography Test Report
- DFARS compliant
- EN 10204/3.1B, EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC)
- Heat Treatment Charts
- Raw Materials Certificate
- Third Party Reports
- Fumigation Certificates
- Manufacturer Test Certificate
- HS Code Invoice
- Moisture test done
- Form A for Generalized System of Preferences (GSP)
- Laboratory Test Certificate from Govt. Approved Lab
- Surface roughness measurement
Uses & Applications
- Common industrial services (Petroleum, chemical, paper, fertilizer, fabric, aviation and nuclear)
- Fluid, gas and oil industry
- Heat transmission and pressure service
- Construction and ornamental
- Boilers and Heat exchangers
- Decoration purpose, boiler, auto parts, medical device, food industry, building materials
ASTM A249 321 SS Tubing Mechanical Properties
| Grade |
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 Standards
| AISI/SUS |
UNS |
WNR./DIN |
EN |
JIS |
GB |
| 321 |
32100 |
1.4541 |
X6CrNiTi18-10 |
SUS321 |
0Cr18Ni10Ti |
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