Corten steel
unalloyed steels.It is a kind of steel which reacts to natural elements in the atmosphere and forms its own protective layer of rus
Corten A (also known as ASTM A242 / A588 Grade A) is a high-performance atmospheric corrosion-resistant weathering steel alloy. It is a low-alloy structural steel developed with the addition of copper, chromium, nickel and phosphorus elements, featuring self-protective anti-corrosion properties without painting treatment.
Technical Parameters
1 Standard Compliance
ASTM A242/A242M, ASTM A588 Grade A, EN 10025-5, JIS G3125, GB/T 4171
2 Chemical Composition (Max, %)
|
Element |
C |
Si |
Mn |
P |
S |
Cu |
Cr |
Ni |
|---|---|---|---|---|---|---|---|---|
|
Content |
0.15 |
0.75 |
1.00 |
0.10 |
0.03 |
0.25-0.40 |
0.50-1.25 |
0.65 |
3 Mechanical Properties
|
Item |
Parameter |
|---|---|
|
Yield Strength (Rp0.2) |
≥355 MPa |
|
Tensile Strength (Rm) |
470 - 630 MPa |
|
Elongation (A) |
≥21% |
|
Impact Toughness (KV) |
≥27 J (Room Temperature) |
4 Size Range
Corten A Steel Coil: Thickness 0.7mm - 12mm; Width 1000mm - 1530mm; Custom slit width available
Corten A Steel Plate: Thickness 1.5mm - 150mm; Standard width 1220mm/1500mm/1800mm/2000mm; Length 2000mm - 12000mm (customizable)
5 Basic Specifications
Surface: Hot rolled / Cold rolled, pickled & oiled, natural rusty surface
Tolerance: Strictly comply with ASTM standard
Certification: ISO9001, SGS, BV, CE
Packing: Standard seaworthy export packing (waterproof paper, plastic film, steel strap, wooden pallet)
Application Fields
Corten A weathering steel is widely used in long-term outdoor atmospheric exposure scenarios due to its excellent anti-corrosion and structural performance, covering architecture, transportation, municipal engineering and industrial equipment:
- Architectural Decoration: Building exterior walls, curtain walls, facade panels, landscape sculpture, outdoor art installations, garden landscape engineering
- Transportation Engineering: Highway bridges, railway bridges, bridge guardrails, railway vehicle bodies, container manufacturing, tunnel auxiliary structures
- Municipal & Infrastructure: Urban viaducts, light rail towers, street lamp poles, flood gates, sewage treatment equipment, municipal pipeline supports
- Industrial Equipment: Low-pressure gas holders, water storage tanks, industrial storage tanks, crane equipment, offshore platform auxiliary structures, petrochemical atmospheric corrosion resistant components
- Other Fields: Agricultural facilities, outdoor mechanical equipment, power transmission towers, solar support structures
bridge engineering, floor board,containers, power plant chimneys,railway engineering and other outdoor steel, such as large outdoor sculpture steel.
Packing & Shipping
Renai Steel usual packing by waterproof paper, and steel strip packed.Standard Export Seaworthy Package.Suit for all kinds of transport,or as required.
20' container : 27tons max length ≤5.8m
40' container: 28tons max length ≤11.8
FAQ
Q1: What is the difference between Corten A and ordinary carbon steel?
Corten A is a low-alloy weathering steel with trace copper, chromium and nickel elements added. Its atmospheric corrosion resistance is 5-8 times that of ordinary carbon steel. It can be used without paint, while ordinary carbon steel is prone to severe rust and damage in outdoor environments and requires regular anti-corrosion painting maintenance.
Q2: Does Corten A steel need anti-rust painting?
No painting is required for conventional outdoor atmospheric environments. Corten A can form a stable protective rust layer spontaneously to block air and moisture. For extreme harsh environments (long-term salt spray, strong acid and alkali corrosion), simple protective treatment is recommended to further extend service life.
Q3: How long is the service life of Corten A steel?
In standard atmospheric urban environments, the service life can reach 60-80 years without manual maintenance. In coastal and humid environments, the service life is 30-50 years, which is far longer than ordinary carbon steel.
Q4: Is Corten A steel easy to process and weld?
Yes. Corten A has excellent weldability, cutting, bending and stamping performance, consistent with the processing technology of ordinary structural steel. It does not require special welding materials and processes, convenient for on-site construction and secondary processing.
Q5: Will the rust of Corten A steel contaminate the surrounding environment?
In the initial oxidation stage, slight rust water precipitation may occur. After 3-6 months of natural exposure, the surface will form a dense stable oxide layer, no more rust water overflow, no pollution to the surrounding environment, safe and environmentally friendly.
Q6: Can you provide customized size and surface treatment?
Yes. We support customized thickness, width, length cutting, slitting and leveling services. Optional surface treatments: pickling, oiling, blasting, pre-rusting treatment to meet different engineering and design requirements.
Q7: What is your delivery time and packaging standard?
Conventional in-stock specifications can be delivered within 3-7 working days. Customized sizes take 7-15 working days. All products adopt seaworthy export packaging, suitable for long-distance sea and land transportation to avoid damage and moisture.
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