42CrMo4 Precision Seamless Steel Tube Cold Drawn For Precision
JIS G3475 Cold Rolled Carbon Steel Tubes for Building Structures
Material Specification
The JIS G3475 standard specifies the requirements for cold rolled carbon steel tubes used primarily for building structures. These specifications ensure the steel tubes are of high quality, suitable for the demands of construction environments, and comply with various safety and structural integrity standards.
Key Features
- Durability: Enhanced durability through cold rolling processes, improving the lifespan of the steel tubes.
- Versatility: Suitable for various structural applications due to their adaptable nature.
- Consistency: Manufactured under stringent quality controls ensuring consistent material properties.
Chemical Composition
The chemical composition of JIS G3475 cold rolled carbon steel is crucial for understanding its performance characteristics. The table below outlines the typical chemical composition.
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.12 - 0.18 |
| Silicon (Si) | 0.30 max |
| Manganese (Mn) | 0.30 - 0.60 |
| Phosphorus (P) | 0.035 max |
| Sulfur (S) | 0.035 max |
Mechanical Properties
The mechanical properties of these steel tubes ensure they can withstand the stresses and strains of building structures.
| Property | Value |
|---|---|
| Tensile Strength | 340 - 510 MPa |
| Yield Strength | ≥ 205 MPa |
| Elongation (%) | ≥ 30 |
Steel Grade
JIS G3475 steel tubes are available in various grades, each tailored to specific applications and operational demands. Typical grades include:
- STKR400
- STKR490
Application
The JIS G3475 cold rolled carbon steel tubes find their application in:
- Building frameworks
- Structural support for bridges
- High-rise buildings
- Other architectural and infrastructural projects where strength and durability are critical.
Possible Alternative Grades
When JIS G3475 steel tubes are unavailable or unsuitable for specific requirements, the following alternative grades may be considered:
- ASTM A500
- EN 10219
- GB/T 13793
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