ASTM A213 Stainless Steel Tubes Specification
Overview
ASTM A213 is a standard specification covering seamless ferritic and austenitic alloy steel tubes for boilers, superheaters, and heat exchangers.
These tubes are widely used in high-temperature and high-pressure service in power plants, petrochemical plants, and industrial heat exchanger systems.
1. Standard Information
| Item | Description |
|---|---|
| Standard | ASTM A213 |
| Product Type | Seamless Alloy Steel Tubes |
| Application | Boilers / Superheaters / Heat Exchangers |
| Manufacturing Process | Cold Drawn / Hot Finished |
| Size Range | 6 mm – 114 mm |
| Length | Up to 24 meters |
| Grade | Material Type | Typical Application |
|---|---|---|
| TP304 | Austenitic Stainless Steel | Heat Exchangers |
| TP304L | Low Carbon Stainless Steel | Corrosion Resistant Systems |
| TP316 | Molybdenum Stainless Steel | Chemical Industry |
| TP316L | Low Carbon Mo Stainless Steel | Marine & Petrochemical |
| TP321 | Titanium Stabilized Stainless Steel | High Temperature Service |
2. Available Grades
3. Chemical Composition
| Element | TP304 | TP316 |
|---|---|---|
| Carbon | ≤0.08% | ≤0.08% |
| Chromium | 18–20% | 16–18% |
| Nickel | 8–11% | 10–14% |
| Molybdenum | — | 2–3% |
| Property | TP304 | TP316 |
|---|---|---|
| Tensile Strength | ≥515 MPa | ≥515 MPa |
| Yield Strength | ≥205 MPa | ≥205 MPa |
| Elongation | ≥35% | ≥35% |
4. Mechanical Properties
5. Typical Dimensions
| Parameter | Typical Range | Notes |
|---|---|---|
| Outside Diameter (OD) | 6 mm – 114 mm | Custom sizes available |
| Wall Thickness (WT) | 0.5 mm – 12 mm | Depending on specification |
| Length | Up to 24 m | Fixed or random length |
| Inspection Type | Method | Objective |
|---|---|---|
| Pressure Testing | Hydrostatic Test | Verify pipe integrity |
| NDT Inspection | Ultrasonic Testing (UT) | Detect internal defects |
| NDT Inspection | Eddy Current Testing (ET) | Detect surface defects |
| Material Verification | PMI Testing | Confirm alloy composition |
| Metallurgical Test | Grain Size Inspection | Verify heat treatment quality |
6. Inspection & Testing
7. Applications
| Industry | Typical Use |
|---|---|
| Power Plants | Boiler tubes |
| Petrochemical | Heat exchanger tubes |
| Oil & Gas | Process piping |
| Marine Engineering | Seawater heat exchangers |
| Desalination | Condenser tubes |