Stockist & supplier ASTM A588 · ASTM A242 · IS 11587
Corten / Weathering Steel Plates — ASTM A588, A242 & IS 11587
Corten (weathering) steel plate is low-alloy steel that forms a stable rust layer which slows further atmospheric corrosion. Teshi Group stocks and supplies weathering steel plate and sheet to ASTM A588, ASTM A242 and IS 11587. Quotes are sent in 24–48 hours.
Also called: Corten plate, COR-TEN steel, weathering steel plate, A588 plate, IS 11587 plate
What is a Corten / Weathering Steel Plate?
COR-TEN is a trade name for weathering steel: a high-strength low-alloy steel with small additions of copper, chromium, nickel and phosphorus or silicon. Exposed to wet-dry cycles, it develops a dense, adherent oxide patina that slows further corrosion, so it can often be used unpainted. ASTM A588 and A242 cover weathering structural steel, and IS 11587 is the Indian standard for weather-resistant structural steel. It is used for bridges, building facades, chimneys and stacks, containers and wagons, and landscape features. It is not suited to continuously wet, marine-spray or chloride-laden environments.
Key features
- Stockist and supplier — sourced from steel mills; Teshi does not manufacture plate
- ASTM A588, ASTM A242 and IS 11587 against order
- Forms protective patina — can be used unpainted
- Higher strength than plain carbon structural plate
- Plate and sheet; other sizes supplied against order
- Used in fabricated stacks and structures
Specification
| Supply | Stockist & supplier — Teshi Group, India |
|---|---|
| Standards | ASTM A588, ASTM A242, IS 11587 |
| Product forms | Plate and sheet; thickness and size per mill programme, others supplied against order |
| Condition | As rolled |
| Finish | Mill finish; patina develops in service |
| Testing | Chemical and tensile tests per the standard |
| Documents | Mill test certificate to EN 10204 3.1; EN 10204 3.2 / third-party inspection when the order specifies |
Applications
- Bridges and structural steelwork
- Chimneys and exhaust stacks
- Building facades and cladding
- Freight containers and wagons
- Landscape and architectural features
Technical data sheets
Dimensions & weights
FAQ
Corten / Weathering Steel Plate: common questions
Is Corten a grade?
COR-TEN is a trade name. Weathering steel plate is ordered to standards such as ASTM A588, ASTM A242 or IS 11587. Order by the standard and grade, not the trade name.
Does weathering steel need painting?
In suitable atmospheres it can be left unpainted because the patina protects it. In marine-spray, continuously wet or chloride environments the patina does not stabilise and the steel should be protected.
How long does the patina take to form?
It depends on climate and wet-dry cycles; the colour changes over months, and the stable layer develops over a longer period of exposure. Sheltered or poorly drained surfaces may not form a stable layer.
Does Teshi manufacture weathering steel?
No. Teshi Group is a stockist and supplier of Corten / Weathering Steel Plate, sourced from established mills and supplied with the original mill test certificate. Teshi is an OEM manufacturer of flanges, fittings, fasteners, valves and custom fabrications, which can be ordered with it.
Need a size or grade not listed here?
We source against your specification from approved mills, with mill test certificates and inspection before dispatch.
Send us your specificationTraceability
From mill heat to your site
- 01
Approved mill material
Received against the mill certificate; heat number registered.
- 02
Forging & machining
Heat number carried through every stage in our Indian works.
- 03
PMI, dimensional & NDT
Every lot inspected to the governing standard; TPI witness on request.
- 04
Stamped & certified dispatch
Hard-stamped pieces with EN 10204 3.1 / 3.2 certificates.
Quick RFQ
Quote for Corten / Weathering Steel Plate in 24–48 hours
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