Products Description
SPA-H corten steel is a copper chromium alloy steel. SPA-H corten steel composition especially the added alloy elements display a greater level of resistance to atmospheric weathering when compared to other unalloyed steels. SPA-H corten steel composition promotes the early formation of an adhering protective layer of rust when exposed to the atmosphere.
SPA-H corten steel composition:
| Grade | C ≤ | Si | Mn | P | S ≤ | Cu | Cr | Ni ≤ |
| SPA-H | 0.12 | 0.25~0.75 | 0.20~0.50 | 0.070~0.150 | 0.04 | 0.25~0.60 | 0.30~1.25 | 0.65 |
Besides, the SPA-H corten steel properties are decided by SPA-H corten steel composition to large extent.
SPA-H corten steel properties:
| Symbol | Thickness(mm) | Yield point or proof stress N/mm² (min) |
Tensile strength N/mm² min |
Elongation % min |
| SPA-H | ≤ 6.0 | 345 | 480 | 22 |
| >6.0 | 355 | 490 | 15 |
SPA-H corten steel is available in a wider variety of shapes, thickness, and dimensions. SPA-H corten steel is widely used in air preheater, economizer, railway carriage, containers production, bridge building, construction and so on.



FAQ
What is the ASTM equivalent of spa H steel?
Corten Steel | Weathering Steel | SPA-H Steel | JIS G3125 | ASTM A588.
What is special about Corten steel?
Corten Steel is also known as a 'weathering steel', as the steel forms a protective layer on its surface under the influence of the weather; and it is this protective layer that gives Corten far superior resistance to atmospheric corrosion, compared to other steels.
What is the ASTM A242 steel equivalent to?
The superior ASTM A242 steel properties allow this steel to be used in different applications. The ASTM A242 steel equivalent grade is bs-6323-5/6, JIS g3445, ASTM A214, ASTM A424 gr 1, din 17177, and EN 10217-1/2.
What type of metal is Corten steel?
Corten Steel and Mild Steel are Carbon Steels. Both made from Iron with slightly different chemical compositions. Corten Steel develops a protective layer that slows down the corrosion process. Mild Steel does not form a protective layer but aesthetically is very similar to Corten Steel.
What is the ASTM for Corten steel?
A588
What is Corten Weathering Steel? Weathering steels are a family of ASTM specifications, as well as several trademarked specifications exhibiting similar corrosion-resistant properties. The ASTM specifications are A588, A242, A606-4, A847, A871-65 and A709-50W. The primary trademarked product is Cor-ten®
About Gnee
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.






