Description

ASTM A588 Corten Weathering Steel Plate is a high-strength, low-alloy structural steel specified by the American Society for Testing and Materials (ASTM). It possesses excellent resistance to atmospheric corrosion (“rust prevention through rust”) and a minimum yield strength of 345 MPa (50 ksi), making it suitable for load-bearing structures such as bridges, buildings, and construction machinery that are exposed to the atmosphere for extended periods.

ASTM A588 Corten Weathering Steel Plate Specifications:

1. Standard: ASTM A588/A588M (latest version such as -24), covering plates, profiles, and bars, with a typical thickness ≤200 mm (8 inches).

2. Core Components of ASTM A588 Corten Weathering Steel Plate: Contains alloying elements such as Cu (0.25–0.40%), Cr (0.40–0.65/0.70%), Ni (≤0.50%), and P (≤0.04%), forming a dense and stable rust layer on the surface, providing 2–8 times the corrosion resistance of ordinary carbon steel plate.

3. Strength Grade: Grade A/B/C, with A588 Gr.B being the most common; yield strength ≥345 MPa and tensile strength 485–620 MPa for thickness ≤100 mm.

4. Other Names: Often classified as “Corten steel plate” (Cor-Ten type, but ASTM A588 corresponds to Cor-Ten type B, low phosphorus); no direct national standard designation, similar to Q355NH (GB/T 4171) but with incomplete equivalent composition and properties.

5. ASTM A588 Corten Weathering Steel Plate promotes self-healing of protective rust through the synergistic effect of Cu–Cr–Ni–P, suitable for dry-humid alternating atmospheric environments (such as industrial/rural climates), but not suitable for long-term immersion in water or high-salt-spray marine environments. Applications of ASTM A588 Corten Weathering Steel Plate:

ASTM A588 Corten Weathering Steel Plate is primarily used for load-bearing steel structures requiring high strength and paint-free corrosion resistance, which are exposed to atmospheric conditions for extended periods. Typical applications include:

1. Bridges and long-span structures: Main beams, bridge decks, and supporting components, reducing weight and significantly lowering corrosion maintenance costs;

2. Exposed building frames and curtain walls: Structural frames for high-rise buildings, stadiums, and industrial plants, combining strength with a rust-resistant aesthetic;

3. Energy and infrastructure: Transmission towers, wind turbine towers, port and dock components, and offshore platforms, resistant to salt spray and industrial atmospheric corrosion;

4. Heavy transportation and engineering machinery: Railway car carriages, special containers, mining dump trucks, crane and excavator structural components;

5. Landscape and durable structures: Weathering steel sculptures, retaining walls, walkways, etc., utilizing its stable rust layer to achieve low-maintenance artistic expression.

Standards and Classifications of Corten steel plate

Products	Corten Steel Plate / Weathering Steel Sheets
Standard Grade	ASTM: Corten A; Corten B; A588Gr.A/Gr.B/Gr.C/ Gr.K; A242; A606 Type 4; A709 Gr 50W;
	EN10025: S235J0W; S235J2W; S355J0W; S355J2W; S355K2W; S355J0WP; S355J2WP; S355J2G1W; S355J2G2W; S355K2G1W, S355K2G2W;
	JIS G3114: SMA400AW; SMA400BW; SMA400CW; SMA490AW; SMA490BW; SMA490CW; SMA570W; SMA570P;
	JIS G3125: SPA-H; SPA-C;
	GB/T 4171: Q235NH; Q265GNH; Q310GNH; Q295NH; Q295GNH; Q355NH;Q355GNH; Q415NH; Q460NH; 1500NH; Q550NH;
	GB/T 1979: 09CuPCrNi-A; 09CuCrNi-B; 05CuPCrNi;
	Q/BQB 340: B460NQR; B490NQR; B480GNQR; B600GNQR;
Thickness	Cold Rolled 0.5-2mm Hot Rolled 2-300mm (2-100mm usually used)
Width	1000-3000mm (1000-2200mm usually used)
Length	1000-12000mm or as your request
Surface	Clean, finishing,blasting and painting according to customer requirement
Process	Hot-rolled, Controlled rolling, Normalizing, Annealing, Tempering, Quenching, N+T, Q+T, and other delivery states are available as required
Certificate	API,ISO,SGS,BV,CE etc
Quality	MTC will be provided with goods, third part inspection is acceptable, for example BV,SGS.
Package	Standard export seaworthy package,suit for all kinds of transport,or as required.
Container Size	20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High)
Container Size	40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High)
Trade term	Ex-Work,FOB,CNF,CFR,CIF,etc
Application	Widely used in a variety of architectural and engineering structures,such as
	1.) metal constructions such as buildings,bridges,ships;
	2.) transmission tower, reaction tower;
	3.) lifting transportation machinery;
	4.) industrial furnace;boilers
	5.) container frame, warehouse goods shelves, etc