zinc roofing


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zinc rolled sections

Rolled Actions Men

Zintek
in the costruction
industry

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norms
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zinc rolled sections
 

Certifications
zinc rolled sections
                       2002

 

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zinc roofing

TECHNICAL PROPERTIES, QUALITY CONTROL GUDELINES AND NORMS

ZINTEK is a very high quality Zinc-Copper-Titanium alloy. It fully complies with European Normative EN 988 regarding Zinc and Zinc Alloys for the construction industry.
EN 988 specifies the requisites for the Zinc-Copper-Titanium alloy sheets used by the construction industry and provided as coils, sheets or strips.
According to European norm EN 1179, the alloy is to be produced starting with 99.995 Zinc (Z1 quality) with the addition of appropriate alloying elements.

ZINTEK Norm: UNI EN 988
a) - composition in percentage values

 
Cu
Ti
Al
Zn (1)
 
min min min
Resto


0.080 0.060 -
max max max
1.000
0.200 0.015
 

Z1 Quality Zinc (See table UNI EN 1179 - zinc properties)
 

The alloy components improve the rolled Zinc section properties:
- Titanium increases the strength necessary to resist permanent strain through time 
- Copper increases the material resistance to tensile stress 

the combination of both reduces the coefficient of expansion of the alloy.

ZINTEK Norm: UNI EN 988
b) - mechanical properties

 
Unit load
yield strength


0.2%
Rp 0.2
N/mm
Tensile
Strength



Rm
N/mm2
Ultimate Percent Elongation

A50mm
%
Yield Value
Percent
Elongation



%
Minimum hardness
 
min min min min min
100
150 35 0.1 45
 

 

Physical and Mechanical Properties:

 
Description
Units of Measurement
Value
 
Density Kg/dm2 7.14
Melting Point C 419
Specific Heat at 20 C (68 F) J/g KC 0.401
Thermal Conductivity at 20 C (68 F) W/m K 109
Electrical Conductivity at 20 C (68 F) m/mhm mm2 17
Coefficient of Thermal Expansion lengthwise to lamination mm/m C 0.022
Coefficient of Thermal Expansion transversal to lamination mm/m C 0.017
Recrystallisation limits C >300
Modulus of Elasticity  N/mm2 > 80.000
Erichsen Drawing  mm 7-9
Length tolerances at 180 20 (388 68 F) n 3 minimo
Width tolerances at 180 20 (388 68 F) n 5 minimo
Camber tolerances % 40-55
Nonmagnetic
Fireproof
 

 

Mass specifications

 
Thickness ratio
in mm
Massa aprossimativa
Kg/m2
 
0.60 4.3
0.65 4.7
0.70 5.0
0.80 5.8
1.00
7.2
 

 

 

 

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