JIS G3114 SMA490CW Corten steel plate
SMA490CW corten steel plateis a kind of weathering steel plate, which is widely used in air preheater, coal economizer, railroad vehicles, container production, bridge construction and other fields.
Heat treatment of SMA490CW weathering steel sheet: hot rolling, controlled rolling, normalizing, quenching and tempering, cold rolling.
Corten steel is a copper-chromium alloy steel - an alloy that offers greater resistance to atmospheric weathering than other unalloyed steels. It is a weathering steel that reacts with natural elements in the atmosphere to form its own protective layer against rust.
JIS SMA490CW corten steel sheets chemical composition
| Grade | C ≤ | Si | Mn ≤ | P ≤ | S ≤ | Cu | Cr | Ni | Ce ≤ |
| SMA490CW | 0.18 | 0.15~0.65 | 1.40 | 0.035 | 0.035 | 0.30~0.50 | 0.45~0.75 | 0.05~0.30 | - |
JIS SMA490CW corten steel material mechanical property
| Properties | Conditions | ||
|---|---|---|---|
| T (°C) | Treatment | ||
| Density (×1000 kg/m3) | 7.7-8.03 | 25 | |
| Poisson's Ratio | 0.27-0.30 | 25 | |
| Elastic Modulus (GPa) | 190-210 | 25 | |
| Tensile Strength (Mpa) | 1158 | 25 | oil quenched, fine grained, tempered at 425°C |
| Yield Strength (Mpa) | 1034 | ||
| Elongation (%) | 15 | ||
| Reduction in Area (%) | 53 | ||
| Hardness (HB) | 335 | 25 | oil quenched, fine grained, tempered at 425°C |
JIS SMA490CW corten weathering steel plate thermal properties
| Properties | Conditions | ||
|---|---|---|---|
| T (°C) | Treatment | ||
| Thermal Conductivity (W/m-K) | 42.7 | 100 | |
| Specific Heat (J/kg-K) | 477 | 50-100 | |
JIS sMA490CW corten steel sheet metal physical properties
| Quantity | Value | Unit |
|---|---|---|
| Thermal expansion | 16 - 17 | e-6/K |
| Thermal conductivity | 16 - 16 | W/m.K |
| Specific heat | 500 - 500 | J/kg.K |
| Melting temperature | 1370 - 1400 | °C |
| Service temperature | 0 - 500 | °C |
| Density | 8000 - 8000 | kg/m3 |
| Resistivity | 0.7 - 0.7 | Ohm.mm2/m |
corten steel sheet metal Products Details
What makes weathering steel weather resistant is its special chemical composition and make-up. Weathering steel is more resistant to corrosion than most steels because the surface of the material oxidizes to form a protective layer of bronze-colored rust under frequent alternating wet and dry conditions. Unpainted weathering steel requires very little maintenance and the bronze color will prevent the steel from rusting further.
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