Product Introduction
321 (UNS S32100) stainless steel Heat Exchanger Tube is a titanium-stabilized austenitic alloy designed to resist intergranular corrosion at elevated temperatures. Supplied to ASTM A249 in 22.2mm x 2.11mm with a bright annealed finish, this pipe delivers consistent dimensional accuracy, full traceability and dependable long-term performance for demanding industrial applications.
Product Specifications
| Item | Specification |
| Material Grade | 321 (UNS S32100) |
| Standard | ASTM A249 |
| Type | Heat Exchanger Tube |
| Size | 22.2mm x 2.11mm |
| Length | 6 Meter |
| Surface Finish | Bright Annealed |
Chemical Composition (%)
| Element | Content (%) |
| Carbon (C) | <= 0.08 |
| Manganese (Mn) | <= 2.00 |
| Silicon (Si) | <= 0.75 |
| Phosphorus (P) | <= 0.045 |
| Sulfur (S) | <= 0.030 |
| Chromium (Cr) | 17.0 - 19.0 |
| Nickel (Ni) | 9.0 - 12.0 |
| Titanium (Ti) | 5(C+N) - 0.70 |
Mechanical Properties
| Property | Value |
| Tensile Strength | >= 515 MPa |
| Yield Strength | >= 205 MPa |
| Elongation | >= 35% |
| Hardness | <= 90 HRB |
Application Fields
- Aircraft exhaust manifolds
- High-temperature heat exchangers
- Refinery and boiler piping
- Expansion joints