ASTM A269 SUS304 Medical Grade Capillary Tubes, Corrosion Resistant，Precise for Hypodermic Needles, Medical Devices
| Chemical Composition | |
| Element | Grade: TP304 (wt%) |
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Silicon (Si) | ≤ 1.00 |
| Chromium (Cr) | 18.0 – 20.0 |
| Nickel (Ni) | 8.0 – 11.0 |
| Iron (Fe) | Balance |
| Mechanical Properties | |
| Property | Value (min.) |
| Yield Strength (0.2% offset) | ≥ 205 MPa (30 ksi) |
| Tensile Strength | ≥ 515 MPa (75 ksi) |
| Elongation (in 2 inches / 50 mm) | ≥ 35% |
| Hardness (Rockwell B) | ≤ 90 HRB |
| Mechanical Properties Comparison (304 vs. 304L) | ||
| Property | TP304 | TP304L |
| Yield Strength (min.) | 205 MPa (30 ksi) | 170 MPa (25 ksi) |
| Tensile Strength (min.) | 515 MPa (75 ksi) | 485 MPa (70 ksi) |
| Elongation (min.) | 35% | 35% |
Forceps and irrigation/suction tubes for laparoscopic and arthroscopic endoscopes, or as precision components of catheters and guidewires.
Inner cannulas for high-end injection needles, puncture needles, and insulin pump tubing, ensuring accurate.
Dental and Surgical Tools: Water/air supply tubing for dental handpieces, or as the rigid component of liposuction cannulas and surgical irrigation tubes.
In Vitro Diagnostic Equipment: Inside blood analyzers, biochemical analyzers, and other equipment, responsible for the precise and stable delivery of minute amounts of reagents or samples.
Medical Device Sensors: Protective sheaths for temperature probes and pressure sensors, isolating interference and ensuring accurate signal transmission.
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