ASTM A268 TP430 , UNS S43000 Stainless Steel Seamless Tube For Heat Exchanger Tube
ASTM A268 TP430 , UNS S43000 Stainless Steel Seamless Tube For Heat Exchanger Tube
ASTM A268 TP430 is a standard-grade ferritic and martensitic stainless steel seamless / welded tube for general corrosion resistance and high-temperature service. TP430 (UNS S43000/1.4016 is a straight-chromium ferritic stainless steel with 16–18% chromium content and no nickel addition. As a stainless steel seamless tube, it is manufactured via hot rolling and cold drawing/cold rolling processes without longitudinal weld seams, ensuring integral structural uniformity, high pressure resistance and excellent tightness. Different from austenitic stainless steels (such as SS304/316), TP430 is ferromagnetic, non-hardenable by heat treatment, and features superior oxidation resistance, formability and cost-effectiveness. It is widely used in mild corrosive environments, high-temperature flue systems, heat exchange equipment and general industrial tubing.
Chemical Composition:
| Element | C | Si | Mn | P | S | Cr | Ni |
| % | ≤0.12 | ≤1.00 | ≤1.00 | ≤0.040 | ≤0.030 | 16.00–18.00 | ≤0.60 |
Key Features & Advantages of ASTM A268 TP430SS Tubes:
- High Oxidation Resistance
- High Thermal Conductivity
- Stress Corrosion Cracking Resistance
- Good Mild Corrosion Resistance
- Superior Processability
- High Structural Stability
- Magnetic Properties
- Low Hardness & Good Toughness
- Cost-Effective
Common Surface Finishes:
| Finish Type | Description | Application |
| Annealed & Pickled (AP) | The tube is heat-treated and then chemically cleaned (pickled) to remove the oxide scale. Results in a matte, dull silver-gray finish. | Standard industrial service, heat exchangers, and general corrosive environments. |
| Bright Annealed (BA) | Heat-treated in a controlled hydrogen or vacuum atmosphere. Results in a bright, smooth, reflective, and oxide-free surface. | Decorative applications, food processing, automotive trim, and where a clean surface is required. |
| Grit Blasted / Shot Blasted | Surface is roughened with abrasive media to provide a uniform, matte texture. | Heavy-duty structural components and fluidized bed boilers. |
Main Application Fields:
- Heat Exchanger
- Thermal Power Equipment
- Petrochemical
- Refining
- General Industrial Tubing
- Environmental Protection & Ventilation Systems
- Mechanical Equipment Accessories
- General Industrial Equipment
- Automotive Industry
- Transportation Industry
- Food And Beverage
- Architectural Industry
- Oil & Gas Plant
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