TP316L stainless steel medical grade capillaries
TP316L stainless steel medical grade capillaries
TP316L is a specialized, low-carbon stainless steel tubing widely used in medical-grade capillary tubing due to its excellent corrosion resistance, biocompatibility, and durability. These capillaries are small-diameter, thin-walled tubing designed for precise fluid or gas delivery in demanding medical and pharmaceutical applications.
Is 316 stainless steel good?
Yes, 316 stainless steel is considered excellent, particularly for applications requiring excellent resistance to chloride and acid corrosion, high-temperature environments, and highly hygienic environments. Its durability and resistance make it an excellent choice over other grades like 304 for marine, chemical processing, and food service applications, despite its higher cost.
Stainless Steel Capillary Tube Chemical Composition
The below table shows the chemical composition of the used for Stainless Steel Capillary Tube:
| STAINLESS STEEL CAPILLARY TUBE GRADES | UNS | C | Mn | P | S | Si | Cr | Ni | Mo | Ti | Nb | N |
| TP304 | S30400 | 0.08 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-11.0 | ||||
| TP304L | S30403 | 0.035 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-13.0 | ||||
| TP316 | S3160 | 0.08 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 11.0-14.0 | 2.0-3.0 | |||
| TP316L | S31603 | 0.035 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 |
Stainless Steel Capillary Tube Mechanical Properties
| Material | Heat | Temperure | Tensile Strength | Yield Strength | Elongation %, Min |
| Treatment | Min. | Ksi (MPa), Min. | Ksi (MPa), Min. | ||
| º F(º C) | |||||
| TP304 | Solution | 1900 (1040) | 75(515) | 30(205) | 35 |
| TP304L | Solution | 1900 (1040) | 70(485) | 25(170) | 35 |
| TP316 | Solution | 1900(1040) | 75(515) | 30(205) | 35 |
| TP316L | Solution | 1900(1040) | 70(485) | 25(170) | 35 |
Stainless Steel Capillary Tube Equivalent Grades
| GRADE | UNS NO | DIN/WERKSTOFF |
| Stainless Steel Capillary Tube 304 | S30400 | 1.4301 |
| Stainless Steel Capillary Tube 304L | S30403 | 1.4306 |
| Stainless Steel Capillary Tube 316 | S31600 | 1.4436 |
| Stainless Steel Capillary Tube 316L | S31603 | 1.4404 |
Medical Applications
TP316L medical-grade capillary tubing is used in a variety of critical medical and pharmaceutical products.
Surgical Instruments: Used in the manufacture of surgical tools such as lancets and trocars.
Catheters and Guidewires: Used in the production of specialized guidewires and catheters.
Hypodermic Needles: A standard material for the manufacture of hypodermic needles.
Chromatography and Laboratory Equipment: Used in high-performance liquid chromatography (HPLC) and other laboratory instruments requiring precise fluid delivery.
Drug Delivery Systems: Used in the pharmaceutical industry to produce and deliver vaccines and other medications.
Sensors and Instrumentation: Used in temperature, pressure, and flow sensors.
Manufacturing and Processing
The manufacture of medical-grade capillary tubing requires a high degree of precision and control.
Cold Drawing: 316L stainless steel stock is typically reduced to its final small diameter and thin wall thickness through a process known as cold drawing. This process is performed at room temperature and achieves tight dimensional control.
Surface Treatment: After drawing, the capillary tubing undergoes cleaning and polishing to achieve the high-purity, smooth surface required for medical applications. Quality Control: Manufacturers of medical-grade capillary tubing must adhere to strict quality management standards, such as ISO 13485.
Gnee Steel specializes in the production of a wide range of stainless steel products. Gnee Steel's product packaging includes: Steel Strapping: Pipes with an outer diameter of 3 inches or less are typically strapped together with polypropylene film to prevent rust during ocean shipping, and then secured with steel strapping. Wooden Cases/Crates: Pipes are typically packaged in wooden cases or crates to protect the pipes during transportation, especially those that are longer or have larger diameters. Seaworthy Export Packaging: Suppliers typically use standard seaworthy export packaging methods, which may include a variety of materials and techniques to protect the pipes during transportation. Tarpaulin Packaging: This prevents rain, seawater, and other external factors from penetrating the export crates during transportation. Gnee Steel specializes in the production and sale of alloy materials. Gnee Steel's products are widely used in the aerospace, chemical, power, automotive, and nuclear energy sectors, and we can provide customized alloy material solutions based on customer needs. For alloy material pricing or customized alloy material solutions, please contact us for a quote: ru@gneesteelgroup.com
