haracteristics and Physical Properties of 304 Capillary Tubes

1. Material Composition: Primarily composed of 18% chromium and 8% nickel, with low carbon content, making it a classic austenitic stainless steel.
2. Corrosion Resistance: Excellent resistance to oxidation, acids, alkalis, and other corrosive environments.
3. High-Temperature Performance: Maintains good mechanical properties and oxidation resistance at high temperatures (up to 800°C).
4. Low-Temperature Toughness: Retains ductility and strength even in cryogenic conditions.
5. Mechanical Properties:
   • Tensile Strength: ≥520 MPa
   • Yield Strength: ≥205 MPa
   • Elongation: ≥40%
6. Non-Magnetic: Typically non-magnetic in the annealed state but may become slightly magnetic after cold working.
7. Surface Finish: Smooth, polished surface with options for various finishes (e.g., matte, bright, or mirror polish).
8. Formability & Weldability: Excellent formability and weldability, suitable for precision applications.
9. Hygienic Properties: Easy to clean and sterilize, making it ideal for medical and food industries.
10. Applications: Widely used in instrumentation, medical devices, chemical equipment, and precision engineering.

Key Standards: ASTM A213, A269 (U.S.), DIN 17458 (Europe), JIS G3446 (Japan).

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Chemical Composition and Applications of 304 Capillary Tubes

1. Chemical Composition (%)

2. Key Applications

• Medical Devices: Hypodermic needles, surgical instruments, catheter tubes.
• Laboratory Equipment: Precision fluid transfer, chromatography, and sensor components.
• Industrial Instrumentation: Pressure gauges, thermocouples, and hydraulic systems.
• Chemical Processing: Corrosion-resistant tubing for acids and solvents.
• Food & Beverage: Sanitary fluid transport and dairy processing.
• Automotive & Aerospace: Fuel injection systems and hydraulic lines.
• Electronics: Miniature tubing for cooling or gas delivery in semiconductors.

3. Key Standards

• ASTM A213/A269 (U.S.)
• DIN 17458 (Europe)
• JIS G3446 (Japan)

Note: 304 stainless steel capillary tubes are favored for their corrosion resistance, formability, and biocompatibility, making them versatile across industries. Let me know if you need additional details!