ASTM A269 TP304LN SS Polished Pipe
Shape：Round
Technique：Cold Rolled
Surface Treatment：Polished
Material：Stainless Steel
Thickness：0.5mm-40mm
Diameter：6mm-630mm; 10mm-2000mm.
Length：6000mm, Customize.
ASTM A269 TP304LN SS Polished Pipe Introduction
ASTM A269 TP304LN SS polished tube is a precision tube made of ultra-low carbon-nitrogen alloyed austenitic stainless steel as the base material. It is cold-drawn and then mechanically polished (MP) or electrochemically polished (EP). It is suitable for high-demand scenarios such as food, medicine, semiconductors, and chemicals.
ASTM A269 TP304LN Stainless Steel Polished Pipe
Advantages of ASTM A269 TP304LN mirror polished stainless steel tubing
The nitrogen content in ASTM A269 TP304LN polished tubes enhances the density of the passive film, resulting in a 20% increase in strength and superior pitting corrosion resistance compared to 304L. These properties meet the long-term safety requirements of medium-to-low corrosion and high-pressure environments. Electropolished to Ra≤0.2μm, the tubes comply with the stringent cleanliness standards of the food, pharmaceutical, and semiconductor industries.
With its ultra-low carbon, heat-treatment-free characteristics, ASTM A269 TP304LN stainless steel tubing shortens welding time by more than 30% and reduces the risk of post-weld corrosion. Offering performance between 304L and 316L, it provides a 15%–20% cost advantage over 316L under similar service conditions, making it an optimal solution for mid- to high-end projects that require a balanced approach to performance, compliance, and budget.
Why Choose GNEE
GNEE provides third-party inspection services such as BV and SGS to ensure that product quality meets international standards. Its products are exported to many countries including South Korea, Japan, Vietnam, Malaysia, Singapore, Indonesia, etc., and it has provided detailed technical support and good after-sales service for many projects at home and abroad.
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ASTM A269 TP304LN honed stainless steel tubing Specifcation
Chemical Composition of ASTM A269 TP304LN SS Pipe
| Element | Content Range (%) |
|---|---|
| Carbon (C) | ≤0.035 |
| Chromium (Cr) | 18.0–20.0 |
| Nickel (Ni) | 8.0–11.0 |
| Nitrogen (N) | 0.10–0.16 |
| Manganese (Mn) | ≤2.0 |
| Silicon (Si) | ≤0.75 |
| Phosphorus (P) | ≤0.040 |
| Sulfur (S) | ≤0.030 |
Mechanical Properties of ASTM A269 TP304LN Electropolished Pipe
| Property | Value |
|---|---|
| Tensile Strength | ≥515 MPa (75,000 psi) |
| Yield Strength (0.2% Offset) | ≥205 MPa (30,000 psi) |
| Elongation | ≥35% (in 50mm gauge length) |
| Hardness (HBW) | ≤217 (annealed condition) |
| Density | 8.0 g/cm³ |
| Melting Point | 1400–1450°C (2550–2640°F) |
| Elastic Modulus | 193 GPa (28,000 ksi) |
| Thermal Conductivity | 16.2 W/m·K (at 100°C) |
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