What is "COR-TEN" steel:
"COR-TEN" is a US Steel trade name for ASTM A588. Corrosion Resistant Steel (often written without the hyphen as Corten) is a weather resistant steel grade which could more accurately be termed as an "Atmospheric Corrosion Resistant Steel".The original COR-TEN received the standard designation A 242 ("COR-TEN A") from the ASTM International standards group. Newer ASTM grades are A 588 ("COR-TEN B") and A 606 for thin sheet. All alloys are in common production and use.
Corten steel is a copper chromium alloy steel - this alloy displays a greater level of resistance to atmospheric weathering when compared to other unalloyed steels. Corten steel which were developed to eliminate the need for painting, and form a stable rust-like appearance if exposed to the weather for several years. It's chemical composition promotes the early formation of an adhering protective layer of rust when exposed to the elements.
SPA-H steel, JIS G3125 Corten Chemical Composition (%)Compared:
| Grade | C | Si | Mn | P | S | Cr | Cu | V | Ni |
| Corten A | 0.12 | 0.25-0.75 | 0.20-0.50 | 0.07-0.15 | 0.030 | 0.50-1.25 | 0.25-0.55 | - | 0.65 |
| SPA-H | 0.12 | 0.20-0.75 | 0.60 | 0.07-0.15 | 0.035 | 0.30-1.25 | 0.25-0.50 | - | 0.65 |
Mechanical Properties Compared:
| Grade | Minimumyield point (ReH Mpa *) | Tensile strengthRm MPa | Minimumelongation A(Lo=5.65 ?So) % |
| Corten A | 355 | 470-630 | 20 |
| SPA-H | 355 | 490 | 22 |
Company profile
Founded in 2008, Gnee (Tianjin) Supply Chain Group Co., Ltd. specializes in the global trade and processing of Corten steel products.
We handle all kinds of Corten engineering projects, such as bridges, gardens, hotels, and facade systems.
Compliant with ASTM, EN, and other international standards; third-party inspection supported.
Exported to over 200 countries and regions worldwide.
8 subsidiaries across China and overseas, ensuring global service coverage.
Application Fields: Architecture, landscaping, gardening, cladding, and urban infrastructure.
