Description
GOST 9567-75 10, 20, 35, 45, 40X Precision Steel Tubes
Material
GOST 9567-75 specifies the requirements for precision steel tubes made from various grades of carbon steel. These tubes are designed for high precision applications, ensuring dimensional accuracy and surface quality.
Specification
The standard outlines the dimensions, tolerances, and mechanical properties required for precision steel tubes. The tubes are available in various diameters and wall thicknesses, catering to different industrial needs.
Key Features
- High Precision: Manufactured to tight tolerances for dimensional accuracy.
- Surface Quality: Smooth surface finish to reduce friction and wear.
- Versatile Applications: Suitable for various industries, including automotive, machinery, and construction.
- Durability: High strength and resistance to deformation under load.
Chemical Composition
Steel Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) |
---|---|---|---|---|---|---|---|---|
10 | 0.10 | 0.15 | 0.40 | 0.04 | 0.03 | – | – | – |
20 | 0.20 | 0.15 | 0.60 | 0.04 | 0.03 | – | – | – |
35 | 0.35 | 0.15 | 0.80 | 0.04 | 0.03 | – | – | – |
45 | 0.45 | 0.15 | 0.90 | 0.04 | 0.03 | – | – | – |
40X | 0.40 | 0.15 | 0.80 | 0.04 | 0.03 | 0.10 | 0.10 | 0.10 |
Mechanical Properties
Steel Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HB) |
---|---|---|---|---|
10 | 235 | 370 | 28 | 120 |
20 | 245 | 400 | 26 | 130 |
35 | 355 | 540 | 22 | 160 |
45 | 370 | 600 | 20 | 170 |
40X | 400 | 650 | 18 | 180 |
Steel Grade
The steel grades specified in GOST 9567-75 include:
- 10
- 20
- 35
- 45
- 40X
Each grade has unique properties that make it suitable for specific applications.
Application
Precision steel tubes are widely used in various applications, including:
- Automotive Industry: For manufacturing components such as axles, shafts, and frames.
- Machinery: In the production of hydraulic cylinders and other precision machinery parts.
- Construction: For structural applications where strength and precision are critical.
Possible Alternative Grades
In addition to the grades specified in GOST 9567-75, alternative grades may be considered based on specific requirements:
- S235JR: A common structural steel grade with good weldability.
- S355J2: A higher strength structural steel grade.
- AISI 4140: A chromium-molybdenum alloy steel with good hardenability.