Custo do revestimento Corten por M2

Custo do revestimento Corten por M2

The rust on Revestimento em aço corten does not continuously fall off. While there may be some loose rust during the early oxidation stage, it eventually forms a estável, tightly bonded patina. This is the key feature that gives Corten steel its long-lasting durability and low maintenance, making it a reliable choice for exterior cladding applications.

Categoria: Aço Corten

Descrição

Ao avaliar Revestimento em aço corten, one common concern is whether the rust layer will fall off or stain surrounding areas. The answer depends on the stage of oxidation and environmental conditions.

Does Corten Steel Rust Fall Off?

Short Answer

Early stage: Sim, some loose rust may appear and can wash off
Stable stage: Não, the rust layer becomes dense and firmly bonded, e não descama

Why Rust Behavior Changes

1. Early Oxidation Stage

When Corten steel is newly installed:

The rust layer is loose and porous
Rainwater may carry rust particles, causing runoff stains
Surface color is bright orange and uneven

This stage is temporary and part of the natural weathering process.

2. Patina Formation Stage

As exposure continues:

Elementos de liga como Cu, Cr, e Ni modify the rust structure
The oxide layer becomes compacto e aderente
The surface transitions to reddish-brown

At this point, the rust layer acts as a barreira protetora.

3. Stable Stage

After full weathering:

Rust is firmly attached to the steel surface
No flaking or peeling like ordinary carbon steel
Minimal or no runoff under normal conditions

Comparison with Ordinary Steel

Aspecto	Aço Corten	Ordinary Steel
Rust structure	Dense and stable	Loose and flaky
Adesão	Forte	Fraco
Flaking	Minimal after stabilization	Continuous
Proteção	Self-protecting	Corrosion continues