ASTM A269 TP316L Stainless Steel Seamless Tube For Heat Exchanger

ASTM A269 TP316L Stainless Steel Seamless Tube For Heat Exchanger

ASTM A269 is a specification by the American Society for Testing and Materials for seamless and welded austenitic stainless steel tubing used in corrosion-resistant and high-temperature service. The TP316L grade refers to a low-carbon variant of Type 316 stainless steel, optimized for welding and harsh environments.

Superior corrosion resistance in acidic/chloride environments (vs. 304/316).Enhanced weldability due to low carbon content.High strength and durability at elevated temperatures.Smooth, seamless structure ideal for high-pressure applications.

Chemical Composition:

• Chromium (Cr): 16–18% (provides oxidation/corrosion resistance).

• Nickel (Ni): 10–14% (stabilizes austenitic structure, enhancing ductility and toughness).

• Molybdenum (Mo): 2–3% (improves resistance to pitting/crevice corrosion in chloride environments).

• Carbon (C): ≤0.03% (low carbon minimizes carbide precipitation during welding).

• Other elements: Manganese (≤2%), Silicon (≤0.75%), Phosphorus (≤0.045%), Sulfur (≤0.03%), Iron (balance).

Mechanical Properties:

• Tensile Strength: ≥70 ksi (485 MPa).

• Yield Strength: ≥25 ksi (170 MPa).

• Elongation: ≥40% (in 2 inches).

• Hardness: ≤90 HRB (Rockwell B) or ≤200 HB (Brinell).

• Density: 8.0 g/cm³.

• Melting Point: ~1375–1400°C.

Applications:

• Pharmaceutical/Biotech: Sterile tubing for process systems (autoclave compatibility).

• Chemical Processing: Handling acids, solvents, and corrosive chemicals.

• Oil & Gas: Offshore platforms (resists seawater/sour gas).

• Food & Beverage: Hygienic transfer lines (meets FDA/USDA standards).

• Marine: Heat exchangers, desalination plants (saltwater resistance).

• Medical Devices: Implants/surgical tools (biocompatibility, sterilizability).

• Nuclear: Coolant systems (radiation/thermal fatigue resistance).

• Heat Exchangers: High-temperature condensers and boilers.

ASTM A269 Stainless Steel Seamless Tube

Heat Exchanger Stainless Steel Seamless Tube

TP316L Stainless Steel Seamless Tube

ASTM A269 TP316L Stainless Steel Seamless Tube For Heat Exchanger Images