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Empo Aluminium
Product Details
EmpAL X 7021 EmpAL X 7021

EmpAL X 7021 aluminium precision milled plates provide precise tolerances that are essential to the developing industry and engineering. Besides dimension stabilization and visual quality, with its high hardness and mechanical resistance values, it provides durable and stable operation for machine parts that are exposed to stress.

General Properties

  • Both sides precision milled mirror surface
  • Foiled on both sides
  • Excellent flatness
  • Stress relieved
  • High strength
  • High durability
  • Very good polishability

Typical Fields of Application

  • Injection moulds for plastics
  • Low press foaming, paper fibre and blow moulds
  • Medical industry
  • Component require a lot of surface milling
  • High stressed machine components
  • Components requiring high strength, durability and lightness

For more information → Technical Data Sheet

CHARACTERISTICS OF ALLOY
Alloy EN AW 7021 (AlZn5,5Mg1,5), DIN EN 573-3 / 3.4335
Type of Alloy Heat treatable
Temper T6
PROCESSING CHARACTERISTICS
Machinability Very Good
Dimensional Stability Very Good
Weldability (Gas/TIG/MIG) Inapplicable/Poor/Moderate
Anodizing (Not Decorative) Good
Polishability Very Good
Erodibility Very Good
Corrosion Resistance (Sea Water/Weather) Poor/Moderate
Contact With Food No (according to EN 602)
MECHANICAL PROPERTIES
Yield Strength Rp0,2 280-320 MPa
Tensile Strength Rm 310-350 MPa
Elongation A50 3-4 %
Brinell Hardness 125-135 HB
PHYSICAL PROPERTIES
Density 2,78 g/cm³
Modul of Elasticity 72,000 N/mm²
Electrical Conductivity 19-23 m/Ω.mm²
Thermal Conductivity 125-155 W/m.K
Coefficient of Thermal Expansion 23,0 K-1.10-6
Spesific Heat Capacity 875 J/kg.K
TOLERANCES
Surface Roughness Ra ≤0,30 µm
Thickness (mm) +/- 0,10
Flatness  ≥12 (mm) 0,13
Flatness  <12 (mm) 0,40
Width & Length (mm) +/- 10
STANDART STOCK SIZES
Width x Length (mm) (1520x4020)  (2000x4000)
Thickness 6-50 (mm)  6 8 10 12 15 18 20 25 30 35 40 45 50
Thickness 50-100 (mm) Upon request
For non standart sizes please contact us.
EmpAL X 7021 Brochure
PDF
2.56 Mb.