JIS G3125 SPA-C is a high-strength weathering steel plate made primarily of carbon steel with minor alloying elements such as copper (Cu), nickel (Ni), phosphorus (P), and chromium (Cr).
The addition of these elements significantly improves the steel's mechanical properties and corrosion resistance, making it suitable for harsh outdoor and marine environments.
Chemical Composition (%)
| Element | Content |
|---|---|
| Carbon (C) | ≤ 0.12 |
| Silicon (Si) | 0.25 – 0.75 |
| Manganese (Mn) | 0.20 – 0.50 |
| Phosphorus (P) | 0.070 – 0.150 |
| Sulfur (S) | ≤ 0.040 |
| Copper (Cu) | 0.25 – 0.60 |
| Chromium (Cr) | 0.30 – 1.25 |
| Nickel (Ni) | ≤ 0.65 |
Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa, min) | 325 |
| Tensile Strength (MPa, min) | 450 |
| Elongation (%) | 26 |
Size Range
| Parameter | Range |
|---|---|
| Thickness | 1 mm – 100 mm |
| Width | 1500 mm – 3500 mm |
| Length | 3000 mm – 27000 mm |
SPA-C steel plates can be supplied in hot rolled, cold rolled, AR/CR, normalized, TMCP, quenched & tempered (Q/T) conditions according to customer requirements.
SPA-C High strength weathering steel plate is widely used in air preheater, economizer, railway carriage, containers production, bridge building , construction and so on.
SPA-C steel sheet delivery condition can be hot rolled, Cold rolled ,AR/CR/N/TMCP/T/QT as the customer request.
Inspection & Certification
SPA-C plates can be certified by ABS, DNV, BV, GL, CCS, LR, RINA, KR, NK, CE, SGS, IKE, IEI, or other third-party inspection organizations to ensure quality and compliance with international standards.
Delivery & Services
Delivery Time: 30–50 days (7 days for stock goods)
Loading Ports: Shanghai, Tianjin, Qingdao
Supply Capacity: 5000 MT per month
Packaging: Standard export seaworthy packing or customized
Extra Services: Shot blasting, sand blasting, painting, galvanizing, cutting to size, sample service, UT testing, size inspection, third-party inspection
What is SPA-C corten weathering steel plate equivalent grades
The equivalent grades of SPA-C corten weathering steel plate include HW350, SPA-H JIS G3125, ASTM A242 (COR-TEN A), ASTM A588 (COR-TEN B), S355J2WP+N, S355J2W+N, S355JOWP, S355JOW, S355J2W, 1.8946, 1.8965, SAILCOR IRSM41-97.
What is SPA-C weathering steel?
SPA-C is a type of atmospheric corrosion-resistant steel (Corten steel) designed for long-term outdoor exposure. It forms a stable, protective rust layer that prevents further corrosion, reducing maintenance needs.
What are the main applications of SPA-C steel?
SPA-C is commonly used for architectural facades, outdoor sculptures, bridges, retaining walls, garden landscapes, and industrial equipment where durability and aesthetics are important.
Can SPA-C steel be welded or processed?
Yes. SPA-C can be cut, welded, bent, and formed using standard steel processing methods. Preheating may be recommended for thick plates to avoid welding cracks.
Where can I buy SPA-C steel?
SPA-C steel is available from specialized steel suppliers and distributors. GNEE offers a wide range of SPA-C products in various sizes and forms.
