ASTM A269/A269M TP304/TP304L/TP304LN Steel Tubes
ASTM A269 Austenitic Stainless Steel Tubes
Ganyeah Group, a professional manufacturer of stainless steel tubes with over 20 years of expertise, proudly supplies high-quality ASTM A269/A269M-compliant austenitic stainless steel tubes. Our products are widely used in general service applications requiring resistance to corrosion, and both low- and high-temperature capabilities. Every tube is manufactured with strict adherence to ASTM A269/A269M standards, ensuring excellent performance and international compliance.
Product Overview
Standard: ASTM A269 / A269M
Material Grades: TP304, TP304L, TP304LN
Tube Type: Seamless or Welded Austenitic Stainless Steel
Delivery Condition: Solution Annealed
Size Range (Custom sizes available upon request):
Outside Diameter: 6 mm – 219 mm
Wall Thickness: 0.5 mm – 6.0 mm
Surface Finish: Bright annealed, pickled, or polished
Testing: Eddy current or hydrostatic test per client requirement
Available Grades & Requirements
- TP304 (UNS S30400)
Austenitizing Temperature: 1900°F [1040°C] min
Hardness: ≤192 HBW / 200 HV or 90 HRB
Chemical Composition (% by weight):
Carbon (C): 0.08 max
Manganese (Mn): 2.00 max
Phosphorus (P): 0.045 max
Sulfur (S): 0.030 max
Silicon (Si): 1.00 max
Nickel (Ni): 8.0 – 11.0
Chromium (Cr): 18.0 – 20.0
- TP304L (UNS S30403)
Austenitizing Temperature: 1900°F [1040°C] min
Hardness: ≤192 HBW / 200 HV or 90 HRB
Chemical Composition:
Carbon (C): 0.035 max
Manganese (Mn): 2.00 max
Phosphorus (P): 0.045 max
Sulfur (S): 0.030 max
Silicon (Si): 1.00 max
Nickel (Ni): 8.0 – 12.0
Chromium (Cr): 18.0 – 20.0
- TP304LN (UNS S30453)
Austenitizing Temperature: 1900°F [1040°C] min
Hardness: ≤192 HBW / 200 HV or 90 HRB
Chemical Composition:
Carbon (C): 0.035 max
Manganese (Mn): 2.00 max
Phosphorus (P): 0.045 max
Sulfur (S): 0.030 max
Silicon (Si): 1.00 max
Nickel (Ni): 8.0 – 11.0
Chromium (Cr): 18.0 – 20.0
Nitrogen (N): 0.10 – 0.16
TP304 vs TP304L vs TP304LN: Grade Comparison
| Feature | TP304 | TP304L | TP304LN |
| Max Carbon (%) | 0.08 | 0.035 | 0.035 |
| Nickel Range (%) | 8.0 – 11.0 | 8.0 – 12.0 | 8.0 – 11.0 |
| Nitrogen (%) | — | — | 0.10 – 0.16 |
| Corrosion Resistance | Good | Improved IGC Resistance | Enhanced + Higher Strength |
| Application Suitability | General Purpose | Better weldability | High performance & low temp |
TP304L offers better intergranular corrosion resistance due to its low carbon content, especially post-welding.
TP304LN, with added nitrogen, provides increased yield strength and enhanced corrosion resistance, making it suitable for more demanding service conditions.
Applications
Ganyeah’s ASTM A269 stainless steel tubes are widely used in:
Heat exchangers and condensers
Beverage and dairy processing lines
Pharmaceutical and chemical piping
Automotive systems
Structural and mechanical tubing
General fluid transport in corrosive environments
Why Choose Ganyeah Group?
Certified Manufacturing: Full compliance with ASTM, EN, and ISO standards
Rich Inventory: TP304, TP304L, TP304LN in stock and ready for export
Customization Flexibility: Cut-to-length, custom finish, and special tolerance options
Strict Quality Assurance: Full traceability, MTCs, EN 10204 3.1 certificates
Export-Oriented Service: Fast delivery, strong packaging, and multilingual support
Ordering Information
Please specify the following when placing orders:
Grade (TP304 / TP304L / TP304LN)
Outside diameter and wall thickness
Length (random or cut-to-length)
Tube type (seamless or welded)
Surface finish (BA, pickled, polished)
End type (plain, beveled)
Testing or certification requirements
Contact Ganyeah Group today for premium ASTM A269 stainless steel tubing solutions tailored to your technical and commercial requirements.