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Description
Overview of JIS G3101 SS400 Carbon and Low-Alloy High-Strength Steel Plate
JIS G3101 SS400 is a Japanese standard for hot-rolled carbon structural steel plates used in general structural applications. It is known for its good weldability, tensile strength, and versatility, making it a popular choice in construction and manufacturing industries.
Chemical Composition and Mechanical Properties of SS400 Steel
Chemical Composition:
| Element | Percentage |
|---|---|
| Carbon (C) | 0.17% max |
| Manganese (Mn) | 1.40% max |
| Phosphorus (P) | ≤0.050% |
| Sulfur (S) | ≤0.050% |
| Silicon (Si) | 0.40% max |
Mechanical Properties:
| Property | Value |
|---|---|
| Yield Strength (min) | 245 MPa (35,500 psi) for thickness ≤16 mm |
| Tensile Strength | 400 – 510 MPa (58,000 – 74,000 psi) |
| Elongation in 8″ (min) | 20% for thickness ≤16 mm |
Applications and Industries Utilizing SS400 Steel Plates
SS400 steel is widely used across various industries due to its excellent mechanical properties:
- Construction: Used in building frames, bridges, and other infrastructure.
- Heavy Machinery: Structural components in machinery manufacturing.
- Automotive Industry: Parts such as chassis and frames.
- Shipbuilding: Structural applications in ship construction.
- General Fabrication: Used in various structural applications where moderate strength is required.
Corrosion Resistance and Performance Characteristics of SS400
- Corrosion Resistance: While SS400 has moderate corrosion resistance, protective coatings are recommended for use in corrosive environments.
- Performance Characteristics: Known for good toughness, ductility, and weldability, making it suitable for various structural applications.
Manufacturing Processes for JIS G3101 SS400 Steel Plates
SS400 steel plates are typically manufactured through the following processes:
- Hot Rolling: The steel is rolled at high temperatures to achieve desired thicknesses.
- Cold Rolling: Further processing may be done to improve surface finish.
Available Dimensions:
| Thickness Range | Width Range | Length Range |
|---|---|---|
| 6 mm – 120 mm | Up to 2500 mm | Up to 12000 mm |
Welding and Fabrication Considerations for SS400 Steel
- Weldability: Excellent weldability; can be welded using various methods such as MIG or TIG welding without preheating.
- Post-Weld Treatment: Generally not required but can enhance mechanical properties depending on application requirements.
Comparison of JIS G3101 SS400 with Other Structural Steel Grades
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Typical Applications |
|---|---|---|---|
| SS400 | ≥245 | 400 – 510 | General construction, heavy equipment |
| S235 | ≥235 | 360 – 510 | General structural applications |
| A36 | ≥250 | 400 – 550 | General construction applications |
At HL Steel Company, we provide high-quality JIS G3101 SS400 carbon and low-alloy high-strength steel plates tailored for various industrial applications, ensuring optimal performance and reliability in demanding environments.
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