Description
GOST 14162-79 12Ch18N9 08Ch18N10T 12Ch18N10T Stainless Capillary Tube
Material
The GOST 14162-79 standard specifies the requirements for stainless steel capillary tubes used in various applications. The materials covered under this standard include several grades of stainless steel, each with unique properties suitable for different environments.
Specification
The specification outlines the dimensions, tolerances, and mechanical properties required for the stainless capillary tube. These tubes are typically used in applications requiring high corrosion resistance and precision.
Key Features
- Corrosion Resistance: Excellent resistance to oxidation and corrosion in various environments.
- High Strength: Maintains mechanical properties at elevated temperatures.
- Precision: Manufactured to tight tolerances, making them suitable for intricate applications.
- Versatility: Can be used in a wide range of industries, including medical, automotive, and chemical processing.
Chemical Composition
| Steel Grade | C (%) | Cr (%) | Ni (%) | Mo (%) | Mn (%) | Si (%) | P (%) | S (%) |
|---|---|---|---|---|---|---|---|---|
| 12Ch18N9 | 0.08 | 17.0-19.0 | 8.0-10.0 | – | 2.0 max | 1.0 max | 0.045 max | 0.015 max |
| 08Ch18N10T | 0.08 | 17.0-19.0 | 9.0-11.0 | 2.0-3.0 | 2.0 max | 1.0 max | 0.045 max | 0.015 max |
| 12Ch18N10T | 0.08 | 17.0-19.0 | 9.0-11.0 | – | 2.0 max | 1.0 max | 0.045 max | 0.015 max |
Mechanical Properties
| Property | 12Ch18N9 | 08Ch18N10T | 12Ch18N10T |
|---|---|---|---|
| Yield Strength (MPa) | ≥ 205 | ≥ 205 | ≥ 205 |
| Tensile Strength (MPa) | ≥ 520 | ≥ 520 | ≥ 520 |
| Elongation (%) | ≥ 40 | ≥ 40 | ≥ 40 |
| Hardness (HB) | ≤ 200 | ≤ 200 | ≤ 200 |
Steel Grade
The steel grades specified in GOST 14162-79 include:
- 12Ch18N9
- 08Ch18N10T
- 12Ch18N10T
These grades are characterized by their high chromium and nickel content, which enhances their corrosion resistance and mechanical properties.
Application
Stainless capillary tubes made from these grades are widely used in:
- Medical Devices: For fluid delivery systems and diagnostic equipment.
- Chemical Processing: In environments where corrosion resistance is critical.
- Automotive: For fuel lines and hydraulic systems.
- Aerospace: In applications requiring lightweight and high-strength materials.
Possible Alternative Grades
While the specified grades are widely used, alternative stainless steel grades may also be considered based on specific requirements:
- AISI 304: Similar corrosion resistance and mechanical properties.
- AISI 316: Offers better resistance to pitting and crevice corrosion.
- AISI 310: Suitable for high-temperature applications.
