Sheet copper
Sheet copper
Copper plate is a highly stable, low maintenance roofing and curtain wall material that is environmentally friendly, safe to use, easy to process, and highly resistant to corrosion.
1) The yield strength and elongation of copper plates are inversely proportional, and the hardness of processed and bent copper plates increases extremely, but can be reduced by heat treatment.
2) Among all architectural metal materials, copper has the best extensibility and has great advantages in adapting to architectural modeling.
3) The copper plate is not limited by the processing temperature, and does not become brittle at low temperatures. When the melting point is high, hot melt welding methods such as oxygen blowing can be used.
4) Fireproof, non combustible material.
5) Even in extremely corrosive atmospheric environments, copper sheets can form a strong, non-toxic passivation protective layer, commonly known as "copper green.". Its chemical composition depends on the air conditions in the region where it is located, but the protective effect of various components of "copper green" on copper plates is basically the same. This passivation film is very stable and can be automatically repaired if damaged, making it difficult to distinguish with the naked eye.
Copper plate has excellent processing adaptability and strength, and is suitable for various processes and systems such as flat lock type systems, vertical edge bite systems, Bem systems, unit wall panels, and rainwater drainage systems. Suitable for various machining requirements such as curved arcs, trapezoids, and corners required by these systems.
Various surface treatments to meet different architectural needs.
(1) Copper oxide sheets can form a uniform brown appearance.
(2) Copper green board is used for renovation of old buildings or new buildings with special requirements.
(3) The original copper plate has the characteristic of gradually changing metal luster, making the building seem to have life.
(4) Tin copper plate can achieve the effect of titanium zinc plate.
The stable protective layer enables the service life of the copper plate to exceed 100 years.
The economic performance price ratio of copper sheet is one of the best among metal roofing materials.
Chemical composition of commonly used processed brass
| Group | Code | Main chemical composition (%) | Total impurities (%) | ||
| copper | zinc | Other alloy elements | |||
| Ordinary brass | H96 | 95.0-97.0 | Allowance | ≤0.2 | |
| H90 | 88.0-91.0 | Allowance | ≤0.2 | ||
| H80 | 79.0-81.0 | Allowance | ≤0.3 | ||
| H68 | 67.0-70.0 | Allowance | ≤0.3 | ||
| H62 | 60.5-63.5 | Allowance | ≤0.5 | ||
| H59 | 57.0-60.0 | Allowance | ≤1.0 | ||
| Lead brass | HPb63-3 | 62.0-65.0 | Allowance | Lead 2.4-3.0 | ≤0.75 |
| HPb59-1 | 57.0-60.0 | Allowance | Lead 0.8-1.9 | ≤1.0 | |
| Tin brass | HSn62-1 | 61.0-63.0 | Allowance | Tin 0.7-1.1 | ≤0.3 |
| Arsenic brass | HSn70-1 | 69.0-71.0 | Allowance | Tin 0.8-1.3, arsenic 0.03-0.06 | ≤0.3 |
| Aldurbra | HAl60-1-1 | 58.0-61.0 | Allowance | Aluminum 0.7-1.5, arsenic 0.1-0.6, iron 0.7-1.5 | ≤0.7 |
| Iron brass | HFe59-1-1 | 57.0-60.0 | Allowance | Iron 0.6-1.2, aluminum 0.1-0.5 | ≤0.3 |
| HFe58-1-1 | 56.0-58.0 | Allowance | Manganese 0.5-0.8, tin 0.3-0.7 | ≤0.5 | |
| Silzin | HSi80-3 | 79.0-81.0 | Allowance | Silicon 2.5-4.0 | ≤1.5 |
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