Description
JIS G3125 – Corten, Weathering steel plates
JIS G3125 is a Japanese standard specification for weathering steel plates, commonly used in structural applications where resistance to atmospheric corrosion is required. These steel plates are designed to develop a protective rust-like patina over time, which helps prevent further corrosion and extends their lifespan, making them ideal for outdoor and exposed environments.
Key Features
- Corrosion Resistance: Forms a stable rust-like appearance that protects against further oxidation.
- High Strength: Offers excellent mechanical properties for structural applications.
- Long-Term Durability: Reduces maintenance costs due to its self-protective rust layer.
- Good Weldability & Formability: Suitable for various fabrication processes.
Common Grades
- SPA-H: High-strength atmospheric corrosion-resistant steel.
- SPA-C: Similar to SPA-H but with slightly different chemical composition and mechanical properties.
- Thickness: 2.5–25 mm
- Width: 50–2500 mm
- Length: Customizable
JIS G3125 SPA-H Chemical Composition
| Element |
C (max) |
Si |
Mn |
P |
S (max) |
Cu |
Ni |
Cr |
Mo |
| SPA-H |
0.12 |
0.25-0.75 |
0.30-1.25 |
0.030-0.065 |
0.030 |
0.25-0.55 |
0.05-0.65 |
0.30-1.25 |
– |
JIS G3125 SPA-H Mechanical Properties
| Property |
Value |
| Yield Strength (MPa) |
≥355 (for thickness ≤16mm) |
| Tensile Strength (MPa) |
490-630 |
| Elongation (%) |
≥15 |
Applications
- Bridges and highway structures
- Railway vehicles
- Industrial chimneys and exhaust systems
- Marine and port structures
- Outdoor sculptures and architectural elements
Reviews
There are no reviews yet.