ASTM A423 Grade 1 Heat Exchanger / Condenser Tubes deliver excellent performance in high-temperature operating environments. This alloy grade shows outstanding resistance in severely reducing conditions such as exposure to chlorides, sulfides, alkalis, sulfuric acid, nitric acid, and other aggressive chemicals.
It provides strong resistance to general corrosion and wear. In addition, its high thermal expansion coefficient makes it suitable for cryogenic and temperature-sensitive applications, allowing temperatures to be easily controlled and stabilized. The material is also not affected by carbide precipitation, ensuring stable long-term performance.
Under high-pressure conditions, these tubes maintain excellent sealing integrity with no leakage. They also offer superior fabrication properties-their good machinability and formability help reduce manufacturing and processing costs.
Each shipment is supplied with complete documentation, including a specification sheet, commercial invoice, raw material test certificate, packing list, and fumigation report.
Products Specifications
| Item | Description |
|---|---|
| Standard | ASTM A423 / ASME SA423 |
| Dimensions | ASTM, ASME, API |
| Size | OD: 6.0–114.0 mm, WT: 1–15 mm, Length: up to 12,000 mm |
| Outer Diameter | 6–114 mm |
| Wall Thickness | 1–15 mm |
| Length | Max. 12,000 mm |
| Surface Finish | Oiled, Passivated, Phosphated, Black Painted, Varnished |
| Pipe Ends | Plain end or beveled end, square cut, burr-free, plastic caps on both ends |
| Manufacturing Process | Hot-finished, Cold-finished, Cold-drawn, Cold-rolled, Hot-rolled |
ASTM A423 Grade 1 Chemical Composition
| Element | Content |
|---|---|
| Carbon (C) | ≤ 0.15% |
| Manganese (Mn) | ≤ 0.55% |
| Phosphorus (P) | 0.06–0.16% |
| Sulfur (S) | ≤ 0.060% |
| Silicon (Si) | ≥ 0.10% |
| Copper (Cu) | 0.20–0.60% |
| Chromium (Cr) | 0.24–1.31% |
| Nickel (Ni) | 0.20–0.70% |
Mechanical Properties of ASTM A423 Grade 1
| Property | Value |
|---|---|
| Tensile Strength | ≥ 415 MPa |
| Yield Strength | ≥ 255 MPa |
| Elongation | ≥ 30% |
What is the chemical composition of ASTM A423 Grade 1?
The chemical compositions present in the A423 Gr 1 grade are carbon, phosphorus, manganese, sulfur, copper, and silicon. The high content of carbon, manganese, and sulfur provides improved oxidation resistance, pitting resistance to an acidic environment, crevice resistance, and stress corrosion cracking resistance.
What is SA 423 material?
ASTM A423 Weathering Steel Pipes Gr. 1 is popularly used in outdoor sculptures. ASTM A423 Corten Steel Tubes GRADE 1 is also used in bridge and other large structural applications. The chemical elements present in this Corten steel tube are carbon, phosphorus, manganese, sulfur, copper, silicon.
What are the common sizes and dimensions of ASTM A423 pipes?
ASTM A423 pipes are available in a variety of outer diameters, wall thicknesses, and lengths, depending on whether they are seamless or welded. The standard covers nominal pipe sizes ranging from 1/8 inch to 24 inches, with wall thickness and length varying according to application requirements.
What are the mechanical properties of ASTM A423 pipes?
These pipes are designed for high-temperature applications and therefore have high tensile strength, yield strength, and creep resistance. Typical properties include a tensile strength of 415–550 MPa, yield strength of 205–275 MPa, and elongation suitable for forming and welding. Exact values depend on the pipe grade and wall thickness.
Where are ASTM A423 pipes commonly used?
ASTM A423 pipes are widely used in boilers, heat exchangers, superheaters, and power plant equipment. They are ideal for piping systems carrying high-temperature steam, hot liquids, or gases, where corrosion resistance and dimensional stability under heat are required.
