| |
|
|
|
 |
|
TECHNICAL CHARACTERISTICS AND REFERENCE STANDARDS
 Zintek® is a very high quality zinc-copper-titanium alloy. It fully complies with European standard EN 988 “Specifications for zinc and zinc alloy rolled flat products for building”. It specifies the requirements for zinc-copper-titanium rolled flat products used in buildings supplied in coils, sheets or strips.
According to European norm EN 1179, the alloy is to be produced from 99.995 zinc (Z1 quality) with the addition of appropriate alloying elements.
|
|
|
Zintek® standard: UNI EN 988
|
|
a) – composition in percentage values
|
|
|
|
Cu |
Ti |
Al |
Zn |
|
|
|
min |
min |
min |
|
|
0,080 |
0,060 |
- |
rest |
|
max |
max |
max |
|
|
1,000 |
0,200 |
0,015 |
|
|
|
|
Z1 quality Zinc (See table UNI EN 1179) |
|
|
The alloy components enhance the rolled zinc section properties:
• Titanium increases the resistance to permanent strain over time;
• Copper increases the material tensile strength.
The combination of both reduces the alloy coefficient of expansion.
|
|
|
Zintek® standard: UNI EN 988
|
|
b) – mechanical properties
|
|
|
|
Unit load yield strength |
|
0,2% |
Rp 0,2 |
N/mm2 |
min 100 |
|
Tensile strength |
|
Rm |
N/mm2 |
min 150 |
|
Ultimate percent elongation |
|
A50mm |
% |
min 35 |
|
Yield value percent elongation |
|
|
% |
max 0,1 |
|
Minimum hardness |
|
|
|
HV 45 |
|
|
|
|
|
|
|
Physical and Mechanical Properties
|
|
|
|
description
|
|
unit of measurement |
Value |
|
|
|
Density |
|
Kg/dm3 |
7,14 |
|
Melting point |
°C |
419 |
|
Specific heat at 20°C |
kJ/Kg °C |
0,401 |
|
Thermal conductivity at 20°C |
W/m °K |
109 |
|
Electrical conductivity at 20°C |
m/ohm 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 |
|
Recrystallization limits |
°C |
>300 |
|
Modulus of elasticity |
N/mm2 |
>80.000 |
|
Erichsen drawing |
mm |
7-9 |
|
Length tolerances at 180° 20°C |
n° |
3 minimo |
|
Width tolerances at 180° 20°C |
n° |
5 minimo |
|
Camber tolerances |
% |
40-55 |
|
Nonmagnetic |
|
|
|
Fireproof
|
|
|
|
|
|
|
|
|
Mass specifications
|
|
|
|
Nominal thickness
mm |
Approximate mass
Kg/m2 |
|
|
|
0,60 |
4,3 |
|
0,65 |
4,7 |
|
0,70 |
5,0 |
|
0,80 |
5,8 |
|
1,00 |
7,2 |
|
|
|
|
|
|
|
