Recently, there has been a rapid evolution of the materials used for civil sheet metal work. The typical semi-circular zinc gutters are now a distant memory. LattoneriaOnline uses thin sheet metal with thicknesses ranging from 0.6 to 1.5mm. The processing starts from sheet metal strips, called coils, to obtain sheet metal cut to size. This will be bent and/or rolled according to individual needs.

The range of sheet metals we use:

Galvanized sheet metals DX 51 D

Galvanized is a cold-rolled Carbon Steel continuously coated on both sides with a hot (sendzimir) process with a Zinc alloy. Due to its versatility, it is used in all civil and industrial applications where the strength of steel is combined with the galvanic protection of Zinc.

Technical characteristics:

Standards: GALVANIZED SHEETS EN 10142 and EN

Zinc coating from 100 g/m2 up to 275 (including both surfaces); Thicknesses from 0.60 mm to 1.50 mm

Surface appearance: micro-flowered

Pre-painted sheet metals in various colors

Galvanized and then pre-painted laminates have the advantage of combining the aesthetics of colors with an additional barrier against corrosion. They are composed of a galvanized metallic support and a uniform organic coating applied continuously both in liquid form and in powder (painted products).

All products are available with self-adhesive peelable protections (PVC protective film for subsequent processing applied in line with profiling, easily removable - easy peeling).

Technical characteristics:

Standards: PRE-PAINTED LAMINATES EN 10169-1

Paint coating 25 microns of polyester on side A and 17 on side B (2F material) 25 microns of polyester on side A and 7 of back coat (1F material)

Thicknesses: from 0.60 mm to 1.00 mm

Support: DX51D

Copper sheet metals

The use of copper in building coverings and in all other building and architectural applications offers an optimal solution both from a technical and an economic point of view.

Copper is not attacked by the polluting compounds present in large quantities in the atmosphere; on the contrary, the thin film of copper salts, with its characteristic green color, that forms on the surface of the manufactured product, constitutes a true self-defense of the metal, preventing any further corrosive attack. Thanks to its ease of processing and installation, copper offers a wide range of constructive and decorative solutions. Copper products are recyclable.

Technical characteristics:

Standard: UNI EN 1172 - 98

Dimensional tolerances UNI EN 10143

Material: CU DHP CW024A

Metallurgical state: R 240

Aluminum sheet metals

Aluminum is a metal, characterized by high lightness, versatile and flexible. It is mainly used in the form of pure aluminum alloys, combined with other elements, in order to improve the mechanical properties of the metal and increase its resistance to corrosion.

The products of the future are reflected in the characteristics of aluminum: light but strong, easy to work and suitable for the entire range of applications, ensuring economic and ecological benefits thanks to efficiency in production and contained maintenance costs.

Pre-painted aluminum products are obtained through a continuous painting process, in which aluminum is degreased, chemically pre-treated and painted. The result is a product with high performance characteristics, versatile and flexible, appreciated for its availability in different colors to meet the most varied architectural needs.

Technical Characteristics:

Standards: UNI EN 485-2, UNI EN 573-3

Type of alloy: EN-AW 3103 (AlMn1) - EN-AW 3105(AlMn0,5Mg0,5)

Physical state: H44-H12

Paint: Side A Primer (4 m) + Paint (22/40m); Side B: Primer (4 m)+Paint (15/25m)

Standard colors

Chemical Characteristics:

Manganese (Mn)0.9 - 1.5%; Magnesium (Mg)0.2 - 0.8%; Iron (Fe)0.7%; Silicon (Si)0.5 - 0.6%;

Mechanical Characteristics:

Tensile strength 150 - 200 MPa;

Elongation 3% min.

Dimensional Characteristics:

Standard Thicknesses 0.7 - 0.8 - 1.0 mm

Dimensional tolerances UNI EN 485-4;

Standard Width 1000 - 1250 mm

Use:

Industrial and civil construction, coverings and claddings, signage

Titanium zinc sheet metals

Zinc is a natural element extracted from the mineral sphalerite. A metallurgical process, which includes the roasting of sphalerite, the reduction of the obtained zinc oxide and the refining through electrolysis, allows obtaining the zinc used in construction.

Zinc is a soft and living material, which easily lends itself to processing and bending. It harmoniously covers the forms and structures of a building.

This noble material improves over the years thanks to its natural patina, which gives it excellent durability and limited maintenance. LattoneriaOnline uses VMZINC, which multiplies its qualities, leaving architects great creative freedom:

VMZINC offers the building world durable cladding solutions, capable of withstanding most of the planet's climates: - water and snow resistance for slopes ? 5% - easy management of expansion-shrinkage stresses, of depression to strong winds, of climatic overloads and of non-propagation of fire. Thanks to its malleability, zinc marries the most original shapes, emphasizes the volumetry of constructions and is easily worked. - the material adapts to all types of slopes ? 5% up to vertical. - it marries complex shapes difficult to achieve with other materials and bends for weak radii of curvature, thanks to unparalleled malleability. Recycling Zinc is an eco-friendly metal, which benefits from a favorable global energy balance. 100% of laminated or processed zinc products at the end of their life cycle is recyclable and 95% is actually recovered for various applications. The production of zinc consumes little energy compared to other metals used in construction.

• Chemical composition

The products are manufactured from high-quality zinc Z1 (99.995% pure zinc defined by the EN/DIN 1179 standard, with the addition of - titanium: min. 0.06% - max. 0.2% , - copper: min. 0.08% - max. 1.0% ,

The addition of copper makes the alloy harder and increases its mechanical resistance, giving zinc a natural patina a grayer appearance (the patina was whiter with previous alloys).

The addition of titanium increases the resistance of the material to deformation (especially under the effect of alternating thermal stresses).

Laminate compatibility

It is very important to focus on the physico-chemical compatibility of the elements connected to each other. In the case of contact of metals, their electrochemical potential should be evaluated in order to avoid "battery effect", namely galvanic corrosion by contact.

Water should never flow from a metal with a high electrolytic potential towards a metal with a lower electrolytic potential. Indeed, in a humid environment, an electrolytic pair is created between the 2 materials that consume one relative to the other. The water charges with ions that can destroy the weaker metal. Incompatible supports In general, it is good practice to avoid any direct contact with fresh cement, lime, bitumen, mortar and construction materials that may contain substances harmful to the laminate.Corrosion bimetallic phenomenon is more likely in the case of "through hole", namely when twoelements are united by a fixing that goes through two sheets of different metal. The two factors that most contribute to the corrosion reaction are the severity of the environment and the difference in potential between the respective metals. The more aggressive the environment and the greater the difference in potential, the greater will be the corrosive attack. Once the degradation phenomenon has started, it tends to evolve over time, going to involve increasingly extensive surfaces. During the assembly of roofs, facades, and sheet metal works, it is necessary to take into account all precautions aimed at avoiding direct contact of two metals having different chemical potential, especially if this difference is significant. Typically, the contact risks occurring when finishing works are executed, especially in the realization of gutters or downspouts, with metal different from that of which the roofing sheets are composed. The situation generally becomes critical if the galvanic couple is immersed in seawater. Whenever it is necessary for contact between cement, mortar, or generally when it is necessary for contact between two materials with very different electrochemical potential, it is advisable to interpose a "neutral" membrane, like PVC or roofing felt or any other membrane available on the market. Regarding small parts (screws, nails, rivets, etc.), elements of the same material or with the same electrochemical potential should be used, unless there is a neutral separating element, as in the case of the nylon element that separates the screw from the laminate.