JIS G3114 SMA490BW Corten Steel Rust Proof
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JIS G3114 SMA490BW Corten Steel
JIS G3114 SMA490BW Corten steel is a robust and weather-resistant material that fits well in common industrial construction uses. It combines high strength with natural corrosion resistance, helping reduce upkeep efforts and providing safety and reliability in exposed outdoor structures.
Chemical Composition (% by mass)
| Element | C | Si | Mn | P | S | Cu | Cr | Ni | Nb |
|---|---|---|---|---|---|---|---|---|---|
| SMA490BW | ≤0.12 | 0.40 | 1.50 | ≤0.035 | ≤0.035 | 0.25-0.55 | 0.30-1.25 | ≤0.65 | ≤0.06 |
Typical Mechanical Properties:
| Property | Typical Value |
|---|---|
| Yield Strength | ≥ 490 MPa |
| Tensile Strength | 590 - 780 MPa |
| Elongation | ≥ 18% (measured over 50 mm) |
| Impact Toughness | Good, varies with thickness and temperature |
Why Engineers Choose SMA490BW
Engineers favor SMA490BW primarily because of its excellent combination of strength and corrosion resistance. With a high yield strength of around 490 MPa, it offers solid structural support for heavy loads and challenging conditions. The natural formation of a protective rust layer reduces the need for painting and other corrosion protection measures, lowering overall maintenance costs. Moreover, this steel grade is relatively easy to weld and fabricate, which helps engineers and fabricators work efficiently and achieve precise designs.
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