ASTM A269 TP201 & TP201LN Stainless Steel Tubes
Ganyeah Group, a trusted stainless steel tube manufacturer with over 20 years of industry experience, proudly supplies ASTM A269 TP201 and TP201LN stainless steel tubes. This specification covers seamless and welded austenitic stainless steel tubing for general corrosion-resisting service, including both low- and high-temperature applications.
Product Description
Standard: ASTM A269/A269M-22
Grades: TP201 (UNS S20100), TP201LN (UNS S20153)
Type: Seamless or Welded Austenitic Stainless Steel Tubes
Size Range:
Outside Diameter: 6 mm to 219 mm
Wall Thickness: 0.5 mm to 6.0 mm
(Pipes outside this range can be manufactured upon request, provided they meet all other requirements of the standard.)
Delivery Condition: Annealed (solution heat-treated)
Testing: Eddy current or hydrostatic testing per customer requirement
Chemical Composition (Max Limits Unless Range Given)
| Element | TP201 (% wt) | TP201LN (% wt) |
| Carbon (C) | 0.15 | 0.03 |
| Manganese (Mn) | 5.5–7.5 | 6.4–7.5 |
| Phosphorus (P) | 0.060 | 0.045 |
| Sulfur (S) | 0.030 | 0.015 |
| Silicon (Si) | 1.00 | 0.75 |
| Nickel (Ni) | 3.5–5.5 | 4.0–5.0 |
| Chromium (Cr) | 16.0–18.0 | 16.0–17.5 |
| Nitrogen (N) | 0.25 | 0.1-0.25 |
| Vanadium (V) | … | 0.10–0.25 |
| Copper (Cu) | … | 1.00 |
Mechanical Properties
| Property | TP201 | TP201LN |
| Solution Annealing | 1040°C (min) | 1040°C (min) |
| Hardness (Max) | 220 HBW/ 230HV or 96 HRB | 250 HBW/263HV or 100 HRB |
TP201 vs TP201LN: Composition & Performance Comparison
While TP201 and TP201LN share a similar base chemistry and are both classified as low-nickel austenitic stainless steels, TP201LN offers improved corrosion resistance, cleaner microstructure, and higher hardness limits due to its lower carbon (0.03% vs 0.15%) and sulfur content, combined with a slightly higher nitrogen and copper allowance.
Lower carbon in TP201LN improves resistance to intergranular corrosion, particularly after welding.
Higher nitrogen and controlled copper enhance strength and pitting resistance, especially in mildly aggressive environments.
The higher hardness limit of TP201LN (250 HBW) indicates slightly improved mechanical strength and better surface durability.
This makes TP201LN the preferred choice for more demanding environments where cleanliness, weld integrity, and extended corrosion performance are critical.
Applications
ASTM A269 TP201 and TP201LN stainless steel tubes are widely used in:
Heat exchangers and condensers
Food processing and dairy piping
General-purpose fluid transport
Decorative tubing and mechanical structures
Automotive exhaust and fuel systems
Low-pressure, corrosion-resistant systems
Why Choose Ganyeah Group?
Decades of Stainless Expertise: Over 20 years of proven reliability in stainless steel tubing.
Comprehensive Quality Control: Full traceability, 100% inspection, and documented heat treatment.
Flexible Customization: Wide range of sizes, surface finishes, and special tolerances available.
Export-Ready Service: Professional documentation, including MTCs, EN 10204 3.1 certificates, and custom packing.
Ordering Information
When placing orders for ASTM A269 TP201/TP201LN stainless steel tubes, please specify:
Outside diameter and wall thickness
Grade (TP201 or TP201LN)
Length requirements (fixed or random)
Tube type (seamless or welded)
End finish (plain, beveled, etc.)
Surface finish (bright, pickled, polished)
Any additional testing or certification requirements
Contact Ganyeah Group today for high-performance ASTM A269 TP201 and TP201LN stainless steel tubing tailored to your project’s needs.