Aluminum Zinc Alloy

CAST 7021 FD PLATE

Available formats: Sheet metal, plates, bars, tubes and profiles.

Heat treated, tempered and artificially matured.
Surface cut by 6 faces.

Typical applications and uses

The rectified Zinc 7021 Alloy Aluminum plate is especially recommended for the following applications: Resin transfer molding, Compression molding, Resin injection molding, Blow molding, Thermoforming.

 

The main alloy addition is zinc and is formulated for primary formation in forged products. Not recommended for complex shapes and sharp corners. For these applications, we recommend the use of laminated products whenever possible.

Heat treatments:

Very low internal tensions. Good shape stability and good homogeneity. High resistance

 

Cast Aluminum Alloy Zinc 7021 FD is a short chip alloy with a very high strength. Less stress than other tooling alloys. This alloy has a moderate resistance to corrosion and is suitable for welding.

Chemical composition

%
Si
Fe
Cu
Mn
Mg
Cr
Zn
Ti
Bi
Zr
Others
Al

Min.

-

-

-

-

1,2

-

5

-

-

0,08

-

-

Max.

0,25

0,4

0,25

0,1

1,8

0,05

6

0,1

-

0,18

0,15

Rest

Chemical composition

Element
Min.%
Max. %

Si


Fe


Cu


Mn


Mg


Cr


Zn


Ti


Bi


Zr


Others


Al

-


-


-


-


1,2


-


5


-


-


0,08


-


-

0,25


0,4


0,25


0,1


1,8


0,05


6


0,1


-


0,18


0,15


Rest

Physical Properties in State T79

Module
Elastic
N / mm²
Weight
specific
gms / cm³
Temperature
of fusion
in ° C
Coefficient of
linear dilation
? m / mK
Conductivity
thermal
W / mK
Resistivity
electric
?? m
Conductivity
electric
% IACS
Potential of
dissolution
V

70.000

2,8

510 - 630

23

125-155

38-52

21-24

-0,81

Physical Properties in State T79

Elastic module
N / mm²
70.000
Specific weight
gms / cm³
2,8
Melting temperature
in ° C
510 - 630
Linear expansion coefficient
? m / mK
23
Thermal conductivity
W / mK
125-155
Electrical resistivity
?? m
38-52
Electric conductivity
% IACS
21-24
Dissolution potential
V
-0,81

Mechanical Characteristics

State Breaking load
Rm (Mpa)
Elastic limit
Rp0.2 (MPa)
Elongation
min %
Hardness * ª
HB
min. max. min. max. 50 mm

S6 - T79

320

380

290

340

2.5 - 4.5

110 - 120

* ª For information only.

Mechanical Characteristics

State S6 - T79
Breaking load Rm (Mpa) | Min. 320
Breaking load Rm (Mpa) | Max. 380
Elastic Limit Rp0.2 (MPa) | Min. 290
Elastic Limit Rp0.2 (MPa) | Max. 340
Elongation min % | 50 mm 2.5 - 4.5
Hardness * HB 110 - 120

* ª For information only.

Technological skills (MB Very Good | B Good | C Correct | R Regular | M Bad)

WELDING

  • To the flame (B)
  • Al arc under argon gas (M)
  • By electrical resistance (M)
  • Braised (B)

ANODIZED

  • Protective (B)
  • Decorative (M)
  • Hard anodized (B)

MECHANIZATION

  • Chip Fragmentation (MB)
  • Surface brightness (MB)

REPUJADO

  • In state: O (-)

NATURAL BEHAVIOR

  • In rural environment (R)
  • In industrial environment (R)
  • In marine environment (R)
  • In seawater (R)

COVERING

  • Lacquered (B)
  • Galvanized (B)
  • Chemical nickel (B)

EMBUTITION

  • By expansion (M)
  • Deep drawing (R)

FOOD

  • Food use (M)

Formats

Cast Aluminum Plates Zinc Alloy 7021 FD.

 

Heat treated, tempered and artificially matured.
Surface cut by 6 faces.

Specialized Technical Advice

We have specialized staff with extensive experience in the sector for any specific advice they need.

Get your quote or Contact us:
(+34) 961 340 776

Contact our specialists for more information.

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