Products Description
ASTM A632 Precision Stainless Steel Tubing
Why choose our Precision Stainless Steel Tubing?
- High surface cleanliness and smoothness: ASTM A632 Precision Stainless Steel Tubing's high purity and cleanliness ensure the sterility of surgical instruments, catheters, and hypodermic needles. Its smooth interior surface prevents contamination and particle accumulation, supporting sanitary conditions and playing a vital role in medical and pharmaceutical applications.
- Tight tolerances: Our products feature high-dimensional precision and tight tolerances, making them suitable for precision manufacturing applications such as brake systems, exhaust lines, and instrumentation tubing.
- Thermal stability: Our products exhibit high temperature resistance, ensuring the strength of superheaters, heat exchangers, and boiler tubing remains intact. They also exhibit thermal stability, making them suitable for both low-temperature (LNG, liquid oxygen) and high-temperature service.
What is Precision Stainless Steel Tubing used for?
- Medical and Pharmaceutical Industries: Hypodermic needles, catheters, and surgical instruments, high-purity fluid pipelines, etc.
- Oil, Gas, and Petrochemical Industries: Hydraulic and pneumatic control systems, offshore and subsea instrumentation systems.
- Semiconductor and Electronics Industries: Ultra-high-purity gas and chemical pipelines, cleanroom fluid systems, etc.
- Automotive Industries: Sensors, fuel systems, small-diameter piping in some brake systems, turbocharging systems, etc.
- Power Generation and Energy Industries: Heat exchanger and condenser piping, small-diameter boiler and superheater tubing, and cryogenic applications such as liquefied natural gas and liquid oxygen/liquid nitrogen systems.
Chemical Composition
| Grade | C (max) | Mn (max) | P (max) | S (max) | Si (max) | Cr (%) | Ni (%) | Mo (%) | Nb/Ti (%) | N (%) |
| TP 304 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0–20.0 | 8.0–11.0 | – | – | – |
| TP 316L | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 | – | – |
| TP 348 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0–19.0 | 9.0–13.0 | – | Nb+Ta ≥10×C% | – |
Mechanical Properties
| Grade | Tensile Strength (MPa) | Yield Strength (MPa, 0.2% offset) | Elongation (%) | Hardness (HRB,max) |
| TP 304 | ≥515 | ≥205 | ≥35–40 | 92 |
| TP 316L | ≥485 | ≥170 | ≥40 | 95 |
| TP 348 | ≥515 | ≥205 | ≥35 | 95 |
Possible Alternative Grades
- EN 10216-5 – Seamless stainless steel tubes for pressure applications in Europe.
- EN 10305-1 / EN 10305-5 – Precision tubes for mechanical and automotive applications (covers precision dimensional tolerances).
- ISO 1127 – Stainless steel tubes with defined tolerances and surface finishes for industrial and sanitary applications.
- ASTM A554 – Welded stainless steel tubing, primarily for structural and mechanical applications where appearance and surface finish are important.
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