China 3.5*0.5 stainless steel capillary tube Suppliers, Pricelist

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China 3.5*0.5 stainless steel capillary tube Suppliers, Pricelist

Stainless steel capillary tube Size 2.5*0.5mm length 30m (photo length ） can be as per you request Grade : 304 surface :bright type :soft this photo of product ,we will send our customer to Hungary Natural Meat Kft.

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Product Description

Characteristics and Physical Properties of 304 Capillary Tubes

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

Chemical Composition and Applications of 304 Capillary Tubes

1. Chemical Composition (%)

Element	Content (Typical)
Chromium (Cr)	18.0–20.0
Nickel (Ni)	8.0–10.5
Carbon (C)	≤0.08
Manganese (Mn)	≤2.0
Silicon (Si)	≤1.0
Phosphorus (P)	≤0.045
Sulfur (S)	≤0.03
Iron (Fe)	Balance

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.

Frequently Asked Questions

What are the main benefits of using 304 capillary tubes?

304 capillary tubes offer excellent corrosion resistance, high-temperature tolerance (up to 800°C), outstanding formability, and are highly hygienic, making them suitable for precision applications in medical and food industries.

What is the chemical composition of a 304 capillary tube?

It primarily consists of 18.0–20.0% Chromium and 8.0–10.5% Nickel, with a low carbon content (≤0.08%), and iron as the remaining balance.

Are 304 stainless steel capillary tubes magnetic?

They are typically non-magnetic in the annealed state. However, they may develop slight magnetic properties after undergoing cold working.

Which standards do these capillary tubes comply with?

Commonly manufactured standards include ASTM A213/A269 (United States), DIN 17458 (Europe), and JIS G3446 (Japan).

What are the typical medical applications for 304 capillary tubes?

Due to their biocompatibility and easy sterilization, they are widely used for hypodermic needles, surgical instruments, and catheter tubing.