GB/T 28713 Stainless Steel Tube Enhanced Heat Transfer Tubes For Heat Exchanger
Material
The GB/T 28713 standard specifies the requirements for stainless steel tubes designed for enhanced heat transfer applications in heat exchangers. The materials covered under this standard include various grades of stainless steel, each with unique properties suited for different operational environments.
Specification
The specification outlines the dimensions, tolerances, and surface finish of the tubes, ensuring they meet the necessary performance standards for heat exchange applications.
Key Features
- Enhanced Heat Transfer: Designed to improve thermal efficiency.
- Corrosion Resistance: High resistance to oxidation and corrosion, suitable for various environments.
- Durability: Excellent mechanical properties ensure longevity and reliability.
- Versatility: Applicable in a range of industries, including chemical processing, oil and gas, and power generation.
Chemical Composition
| Steel Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) | Ti (%) |
| 06Cr19Ni10 (S30408) | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 18.00 | 8.00 | - | - |
| 06Cr18Ni11Ti (S32168) | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 17.00 | 11.00 | - | 5.00 |
| 06Cr17Ni12Mo2 (S31708) | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 16.00 | 12.00 | 2.00 | - |
| 06Cr19Ni13Mo3 (S31608) | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 18.00 | 13.00 | 3.00 | - |
| 022Cr19Ni10 (S30403) | 0.03 | 1.00 | 2.00 | 0.045 | 0.030 | 18.00 | 9.00 | - | - |
Mechanical Properties
| Steel Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HB) |
| 06Cr19Ni10 (S30408) | ≥ 205 | ≥ 520 | ≥ 40 | ≤ 187 |
| 06Cr18Ni11Ti (S32168) | ≥ 205 | ≥ 520 | ≥ 40 | ≤ 187 |
| 06Cr17Ni12Mo2 (S31708) | ≥ 205 | ≥ 520 | ≥ 40 | ≤ 187 |
| 06Cr19Ni13Mo3 (S31608) | ≥ 205 | ≥ 580 | ≥ 40 | ≤ 187 |
| 022Cr19Ni10 (S30403) | ≥ 205 | ≥ 520 | ≥ 40 | ≤ 187 |
Steel Grade
The steel grades specified in the GB/T 28713 standard include:
- 06Cr19Ni10 (S30408)
- 06Cr18Ni11Ti (S32168)
- 06Cr17Ni12Mo2 (S31708)
- 06Cr19Ni13Mo3 (S31608)
- 022Cr19Ni10 (S30403)
Application
These stainless steel tubes are primarily used in heat exchangers across various industries, including:
- Chemical processing
- Oil and gas
- Power generation
- HVAC systems
- Food and beverage processing
Possible Alternative Grades
While the specified grades are optimal for enhanced heat transfer applications, alternative grades may include:
- 304L (S30403)
- 316L (S31603)
- 321 (S32100)
These alternatives may offer similar properties but could be more suitable depending on specific environmental conditions or regulatory requirements.
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GB/T 28713 06Cr19Ni10 Stainless Steel Tube Enhanced Heat Transfer Tubes For Heat Exchanger Images
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