ASTM A213 T5 Tube With Aluminum AL1060 Embedded G Type Fin Tubes For Heater
Detailes of ASTM T5 Base Tubes ( Generally with min. wall thickness )
ASTM A213 This specification covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes, designated Grades T5, TP304, etc.
General Requirements: Product furnished to thisspecification shall conform to the requirements of Specification A 1016/A 1016M, including any supplementary requirements that are indicated in the purchase order.
Manufacture: Tubes shall be made by the seamless process and shall be either hot finished or cold finished, as specified.
Heat Treatment: Full or isothermal anneal normalize and temper of 1250°F [675°C] or higher.
Surface Condition: Ferritic alloy cold-finished steel tubes shall be free of scale and suitable for inspection. A slight amount of oxidation is not considered scale. Ferritic alloy hot-finished steel tubes shall be free of loose scale and suitable for inspection.
Keywords: Alloy steel tubes, Condenser tubes, Heat exchanger tubes, High-temperature applications, Seamless tubes, Boiler tubes, etc.
Chemical Composition (%) max
| Grade | C | Mn | P | S | Si | Cr | Mo |
| T5 | 0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 | 4.00-6.00 | 0.45-0.65 |
Mechanical Properties
| Grade | Tensile Strength min | Yield Strength min | Elongation in 2" or 50mm min | Hardness max |
| T5 | 60ksi (415 MPa) | 30ksi (205 MPa) | 30% | 163HB/170HV, 85HRB |
Test Methods Referreds
Flattening Test, Flaring Test, Flange Test, Hardness Test, Hydrostatic Test, Nondestructive Electric Test
Embedded G Finned Tubes
Embedded G fin tubes, are mechanically embedded into a groove that is plowed into the outer diameter of the base tube. This groove is typically about 0.4 mm deep.The fin strip is tension-wound and placed into the groove.
Base tube material: carbon steel, alloy steel, stainless steel, duplex steel, copper tube;
Fin: Aluminum 1060, aluminum 1100, T2 copper;
Application: air cooler, heat exchanger, heater, radiator economizer (Suitable for high temperature environment, limit temperature 350℃).
Specifications For Various Types Of Finned Tubes
| Type | Description | Base tube | Fin specification (mm) |
| O.D. (mm) | Fin pitch | Fin height | Fin thick |
| Embedded | G-type fin tube | 16-63 | 2.1~5 | <17 | ~0.4 |
| Extruded | Single metal / Combined metal | 8-51 | 1.6~10 | <17 | 0.2-0.4 |
| Low fin tube / T-type fin tube | 10-38 | 0.6~2 | <1.6 | ~0.3 |
| Bamboo tube / corrugated tube | 16-51 | 8.0~30 | <2.5 | ~0.3 |
| Wound | L / KL / LL fin type | 16-63 | 2.1~5 | <17 | ~0.4 |
| String | String fin tube | 25-38 | 2.1-3.5 | <20 | 0.2-0.5 |
| U-type | U-type fin tube | 16-38 | / | / | / |
| Welding | HF-welding fin tube | 16-219 | 3~25 | 5~30 | 0.8-3 |
| H / HH type fin tube | 25-63 | 8~30 | <200 | 1.5-3.5 |
| Studed fin tube | 25-219 | 8~30 | 5~35 | φ5-20 |
Appliction Area
Natural gas processing;
Compressor cooler
Air conditioning (Freon, ammonia, propane);
Petroleum, chemical and petrochemical industries;
Steel industry: blast furnace and converter systems;
Power generation: condensation of exhaust gas from steam turbines, condensate contact cycle cooling condensation, fossil and nuclear power plants,etc.
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