🟦 Product Overview
JIS Angle Steel is produced according to JIS G3192, the Japanese standard for hot‑rolled steel sections. It includes:
- Equal Angle
- Unequal Angle
JIS angles are widely used in Japan, Southeast Asia, and global EPC projects requiring Japanese‑standard structural steel. They are known for:
- Excellent dimensional accuracy
- Reliable mechanical performance
- High weldability
- Consistent quality for structural and mechanical applications
Common material grades include SS400, SM490, and SM520, covering both general structural steel and high‑strength welded structural steel.
🟦 Applicable Standards
- JIS G3192 – Dimensions, shape, mass, and permissible variations of hot‑rolled steel sections
- JIS G3101 – Rolled steels for general structure (SS400)
- JIS G3106 – Rolled steels for welded structures (SM490 / SM520)
🟦 Available Grades
- SS400
- SM490A / SM490B / SM490C
- SM520
These grades provide reliable performance for general and high‑strength structural applications.
🟦 Section Types
Equal Angle (JIS Standard)
- Equal leg lengths
- Suitable for structural and architectural applications
- Designation example: L 100 × 100 × 10
Unequal Angle (JIS Standard)
- Different leg lengths
- Ideal for bracing, framing, and reinforcement
- Designation example: L 150 × 90 × 12
🟦 Dimensions Range
| Type | Leg Size (mm) | Thickness (mm) | Length |
|---|
| Equal Angle | 20×20 – 200×200 | 3–20 | 6 m / 9 m / 12 m / custom |
| Unequal Angle | 30×20 – 250×90 | 3–20 | 6 m / 9 m / 12 m / custom |
Tolerance: As per JIS G3192
🟦 Mechanical Properties
SS400
| Property | Value |
|---|
| Yield Strength | 245–275 MPa |
| Tensile Strength | 400–510 MPa |
| Elongation | ≥ 20% |
SM490
| Property | Value |
|---|
| Yield Strength | ≥ 325 MPa |
| Tensile Strength | 490–610 MPa |
| Elongation | ≥ 18% |
🟦 Chemical Composition (Typical)
SM490
| Element | Max (%) |
|---|
| C | 0.20 |
| Mn | 1.60 |
| P | 0.035 |
| S | 0.035 |
| Si | 0.55 |
🟦 Applications
- Building structures
- Industrial steel frameworks
- Machinery and equipment support
- Civil engineering projects
- Structural reinforcement
- Welded assemblies
🟦 Why Use JIS Angle Steel
- Standardized Japanese dimensions
- Excellent weldability and fabrication properties
- Reliable mechanical performance
- Suitable for Asian and global EPC projects
- Wide range of sizes and grades
🟦 Why Choose WelSteels
- Full range of JIS G3192 equal & unequal angles
- SS400 / SM490 / SM520 grades available
- CNC cutting, drilling, and fabrication services
- SGS / BV third‑party inspection available
- Export‑grade seaworthy packaging
- Fast delivery from stock and mill production
