Looking for premium ASTM A423 Grade 1 Seamless Steel Tube? GNEE is a leading manufacturer of high-quality low-alloy, weathering steel tubes.
ASTM A423 Grade 1 Seamless Steel Tube
Our ASTM A423 GR 1 seamless tubes are corrosion-resistant, durable, and designed to develop a rust-like patina over time, making them ideal for industrial, marine, and architectural applications.
With normalized heat treatment and strict quality control, our tubes are suitable for pipelines, boilers, air preheaters, and other pressure-containing parts.
ASTM A423 Grade 1 Seamless Steel Tube Specifications
GNEE offers ASTM A423 GR 1 seamless tubes in various sizes and finishes:
Diameter: ½" OD to 16" OD (12.7 mm – 406.4 mm)
Wall Thickness: 0.035" – 0.500" (0.9 mm – 12.7 mm), custom sizes available
Length: Single Random, Double Random, and Custom Lengths
Surface Protection: Black, Varnish, Pickling, Shot Blasting, Beveled Ends
Additional Services: CNC cutting, Hydrostatic or Nondestructive Electric Test, Mill Test Certificate EN 10204 TYPE 3.1 or 3.2
These tubes comply with ASTM A423 M-89 / ASME SA423 standards and are engineered for long-term performance under high-stress conditions.
Mechanical Properties of ASTM A423 Grade 1 Seamless Steel Tube
| Property | Value |
|---|---|
| Yield Strength (MPa) | 255 |
| Tensile Strength (MPa) | 415 |
| Elongation (%) | ≥ 25 (50 mm gauge) |
These mechanical properties ensure strength, flexibility, and reliability for demanding industrial applications.
Chemical Composition of ASTM A423 Grade 1 Seamless Tube
| Element | C | Si min. | Mn | P | S | Cu | Cr | Ni |
|---|---|---|---|---|---|---|---|---|
| Max % | 0.15 | 0.10 | 0.55 | 0.06–0.16 | 0.06 | 0.20–0.60 | 0.24–1.31 | 0.20–0.70 |
The carefully controlled alloy composition enhances corrosion resistance, oxidation resistance, and stress corrosion cracking resistance.
Applications of ASTM A423 GR 1 Seamless Steel Tubes
GNEE ASTM A423 GR 1 seamless tubes are widely used in:
- Air preheaters and economizers
- Boilers, condensers, and pipelines
- Power generation and fossil fuel plants
- Petrochemical and chemical processing
- Sugar mills and highly corrosive environments
- Marine transportation pipelines
Their natural rust patina protects the core from further corrosion, minimizing maintenance while extending service life.
Why Choose GNEE for ASTM A423 Grade 1 Seamless Tubes
- Certified Quality: ISO & API certified; supports SGS/BV/Lloyd's inspection
- Ready Stock & Customization: OEM sizes, wall thicknesses, lengths
- Durable & Maintenance-Free: Rust patina naturally protects the material
- Surface Finishing: Multiple options including pickling, varnish, and shot blasting
- Fast & Safe Delivery: Seaworthy packaging for all shipments
GNEE is your trusted supplier for ASTM A423 Grade 1 Seamless Steel Tubes, offering corrosion-resistant, weathering steel for industrial, marine, and power applications.
With high-strength, low-alloy composition, multiple surface finishes, and fast delivery, our tubes ensure reliable long-term performance.
Contact us for latest ASTM A423 Grade 1 Seamless Tubes price list to request a quote and secure your order today!
Contact us for the latest ASTM A423 Grade 1 Corten Steel ERW Tubes
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.
