ASTM A269 TP348 Stainless Steel Tube Bright Annealed For Heat Exchangers and Boilers
ASTM A269 TP348 Stainless Steel Tube Bright Annealed For Heat Exchangers and Boilers
Specifications
ASTM A269 TP348 is a type of austenitic stainless steel tubing for general service applications, available in both seamless and welded forms, and used in environments that require corrosion resistance and can withstand low to high temperatures. The TP348 grade is specifically a stabilized grade of stainless steel, meaning it is produced to resist intergranular corrosion after welding or exposure to high temperatures.
| American Standard | Standard Name |
| A269 / SA269 | Seamless and Welded Austenitic Stainless Steel Tubing for General Service |
ASTM A269 TP348 Stainless Steel Tube Chemical Composition
(Sources American Standard ASTM A269 / A269M-22 TABLE 1 Chemical Requirements C %)
| Steel Grade | UNS Designation A |
C | Mn | P | S | Si | Ni | Cr | Mo | Ta N | Co |
| TP348 | S34800 | 0.08 | 2 | 0.045 | 0.03 | 1 | 9-12 | 17-19 | - | 0.1 | 0.2max |
ASTM A269 TP348 Stainless Steel Tube Mechanical Properties
| Steel Grade | UNS Number | Tensile Strength, N/mm2 (min) |
Yield Strength, N/mm2 (min) |
Elongation, % (min) |
| TP348 | S34800 | 515 | 205 | 35 |
ASTM A269 TP348 Stainless Steel Tube Heat Treatment and Hardness
(Sources American Standard ASTM A269 / A269M-22 TABLE 2 Heat Treatment and Hardness Requirements)
| Grade | UNS Number | Austenitizing Temperature, min or range °F [°C] | Hardness,max |
| TP348 | S34800 | 1900 [1040] | 192 HBW/200 HV or 90 HRB |
ASTM A269 TP348 Stainless Steel Tube Application
- Nuclear Power Generation Systems
- High-Temperature Heat Exchangers and Boilers
- Aerospace and Jet Engine Components
- Chemical Processing Equipment
- Power Generation Turbine Components
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