Products Description
JIS G 3125 SPA-C steel plates are known for their excellent resistance to atmospheric corrosion, similar to ASTM steel corten A and Chinese corten steel 09CuPCrNi-A.
These steel plates are commonly used in various fields, including air preheaters, economizers, railway carriages, bridge construction, container production, and other construction projects.
JIS G 3125 SPA-C Steel Plates Specifications
| JIS G3125 SPA-C material thickness | SPA-C weathering steel sheet oiling | JIS G3125 SPA-C meaning |
|---|---|---|
| 0.6 or more and 2.3 or less (in mm) | SPA-C are oil coated |
JIS G3125 is a Japanese standard C means Cold Rolled |
| Yeild strength | Elongation | JIS G3125 SPA-C steel surface |
| ≥ 450 MPa | ≥ 26 |
Clean Blasting Painting |
| Temperature Range | Life | Workability |
| 2400 to 3000 mm | Up to 25 Years |
Hot working Gas cutting Cold working |
| Certification of JIS G3125 SPA-C steel sheet | Advantages | Density |
|
100% radiography test report Raw materials certificate Third party inspection report Certificate of origin legalized EN 10204/3.1B |
Higher mechanical strength Higher tensile strength |
7.8 g/cm³ |
| Melting point | JIS SPA-C heavy plates welding required | JIS G3125 SPA-C Corten steel strips properties |
|
1460 °C 2650 °F |
Gloves Wire brushes Welding machine (MIG, TIG, or stick) Welding helmet Chipping hammer Jacket or apron Respirator mask Clamps |
Versatility Low maintenance Weldability Weather resistance High strength |
| Applications | Thermal Expansion | Thermal Conductivity |
|
Nuclear industries Power generation Infrastructure projects Gas and oil industries Petrochemical Chemical industries Fertilizers |
13 µm/m-K |
42 W/m-K 24 BTU/h-ft-°F |
JIS G 3125 SPA-C Corten Steel Chemical Composition
| Grade | C ≤ | Si | Mn | P | S ≤ | Cu | Cr | Ni ≤ |
|---|---|---|---|---|---|---|---|---|
| SPA-C | 0.12 | 0.25~0.75 | 0.20~0.50 | 0.070~0.150 | 0.040 | 0.25~0.60 | 0.30~1.25 | 0.65 |
JIS G 3125 SPA-C Mechanical Properties
| Grade | Plate Thickness | Yield strength | Tensile strength | elongation |
|---|---|---|---|---|
| SPA-C | – | ≥ 325 MPa | ≥ 450 MPa | ≥ 26 |
JIS SPA-C Hot Rolled Plate Bendability
| Type symbol | Classification | Bendability | |||
|---|---|---|---|---|---|
| Bending angle | Inner radius | Inner spacing | Test pieces | ||
| SPA-C | – | 180° | Not applicable | 1 | According to 9.2.3.2. |
Application
Air Preheater
SPA-C weathering steel plates are widely used in air preheater manufacturing due to their excellent high-temperature resistance and corrosion resistance. The plates can withstand prolonged exposure to high-temperature gas flows and thermal stresses while resisting corrosive substances in flue gases. This ensures long-term stable operation of the equipment, extends its service life, and reduces maintenance costs.
Economizer
In boilers and heat exchange equipment, weathering steel plates are commonly used for economizer production. Their high strength and corrosion resistance enable the plates to maintain structural integrity in high-temperature, water-steam environments, effectively improving thermal efficiency while reducing cleaning and replacement frequency.
Railway Passenger Cars
In railway passenger car manufacturing, weathering steel plates are frequently employed for car body shells and load-bearing structural components. Their high strength, excellent impact toughness (exceeding 27 J at -20°C), and corrosion resistance ensure the carriages withstand environmental erosion and mechanical wear during prolonged operation, extending the vehicle's service life.
Bridge Construction
In bridge engineering, weathering steel plates are employed for critical structural components such as girders, support frames, and deck plates. With a minimum yield strength of 235–355 MPa, these plates withstand heavy loads and weathering. The naturally formed rust protective layer reduces coating and maintenance requirements, lowering long-term operational costs for bridges.
Container Manufacturing
Weathering steel plates are widely adopted in container production due to their corrosion resistance and high strength. Whether in maritime, rail, or road transport environments, the plates effectively withstand salt spray, moisture, and impacts, ensuring structural integrity and extending service life.
General Construction Projects
Weathering steel plates serve as structural supports, exterior facades, roofing, or curtain wall cladding in diverse construction projects. Their rust-brown weathered appearance offers both aesthetic appeal and long-term durability, minimizing painting and maintenance requirements. This makes them ideal for modern industrial-style and landscape architectural designs.
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