Products Description
ASTM A213 T11 Seamless alloy tube sizes and thicknesses usually furnished to this specification are 1⁄8 in. [3.2 mm] in inside diameter to 5 in. [127 mm] in outside diameter and 0.015 to 0.500 in. [0.4 to 12.7 mm], inclusive, in minimum wall thickness or, if specified in the order, average wall thickness. Tubing having other diameters may be furnished, provided such tubes comply with all other requirements of this specification.

Products Specifications
| Specification | Details |
|---|---|
| Outside Diameter (OD) Range | 12.7 mm – 127 mm (0.5″ – 5″) |
| Wall Thickness | 0.9 mm – 12.7 mm (0.035″ – 0.500″) |
| Lengths Available | 6 meters (20 ft), 12 meters (40 ft), or custom lengths |
| Material Grade | Chrome-Moly T11 (UNS K11597) |
| End Finishes | Bevel End (BE), Plain End (PE), or Threaded |
| Surface Protection | Usually varnished; other coatings available |
Chemical Composition
| Element | wt % Range | What it Does |
|---|---|---|
| Carbon (C) | 0.05 – 0.15 | Gives basic strength. |
| Manganese (Mn) | 0.30 – 0.60 | Adds to hardness and strength. |
| Silicon (Si) | 0.50 – 1.00 | Helps in steelmaking. |
| Chromium (Cr) | 1.00 – 1.50 | Helps resist rust and wear at high heat. |
| Molybdenum (Mo) | 0.44 – 0.65 | Strength at 550°C and resists creep. |
| Phosphorus (P) | ≤ 0.025 | Improves flexibility and toughness. |
| Sulfur (S) | ≤ 0.025 | Prevents cracking at high temperatures. |
Mechanical Properties
| Property | T11 Minimum Requirement | What it Means for You |
|---|---|---|
| Tensile Strength | ≥ 415 MPa (60 ksi) | Withstands pulling force before breaking. |
| Yield Strength | ≥ 205 MPa (30 ksi) | Point at which it permanently bends. |
| Elongation (% in 2 in/50mm) | ≥ 30% | Shows ductility and stretch before failure. |
Products Application
Our ASTM A213 T11 Alloy Steel Tubes are used for tough jobs in:
Power Plant Boilers & Superheaters: Key for carrying very hot steam (up to around 550°C). Ask about our T11 boiler tube cost.
Petrochemical & Refinery Heater Tubes: Handle repeated heating/cooling and resist damaging chemicals. Talk to our T11 tube distributor team for bulk pricing and stock information.
Heat Exchangers & Condensers: Work well for moving heat under high pressure and at high temperatures. Get your "ASTM A213 T11 heat-exchange tubes price" by contacting us.
Chemical Processing Equipment: We can provide T11 tubes meeting NACE standards for sour gas projects and other uses where corrosion is a concern. Ask about our T11 tube pricing for these needs.
Oil and Gas Sector: Used in various heating and process fluid jobs.




















