EN AW – 7021 Plancast plus

Stand: Juni 2015 - Quelle: DIN EN 573-3 / EN 515 / DIN 17611:2011

1. Chemical composition of EN AW – 7021

in the aftermath of DIN EN 573-3 (in % of the mass, rest AL)

SiFeCuMnMgCrZnTiRemarkOther elements
0,250,40,250,11,2-1,80,08-0,185,0-6,00,1

2. mechanical properties of EN AW – 7021

in the aftermath of DIN EN 485-2 Sheets and plates (common conditions)

ConditionNominal thicknessTensile strengthPlug-in limitUltimate elongationRigor
in mmRm in MPaRp0,2 in MPain % (mm)HBS
overup tominmaxminmaxA50A
T73110040042036038055135
Physical propertiesGeneral properties
(Density of 20° C)
Dichte in g/cm32,80Resistance to:
Solidification range ° C580-630– Sea water4
Electrical conductivity MS/m21-24– Weather conditions3
Thermal conductivity W/(mK)125-155Hot formability
Therm. linear expansion-– extrusion presses
Coeffizient 10-6/K20-24– Drop forging
Modulus of elasticity N/mm270.000– Open die forging
WeldabilitySurface treatment
Fusion weldingProtection anodizing2
– GasAnodizing (decorative)6
– WIG2Painting/Coating2
– MIG2
Resistance welding6Contact with foodno
Machinability
– T7312

3. Main application / Special features of EN AW – 7021:

Robot parts, transfer plates, printing machine parts, defence technology, welded constructions. Plancast 7021 is a high-strength cast plate which can be used as a raw blank or as a surface-milled precision plate. No microporosity of the casting plate, therefore also suitable for vacuum and hydraulic applications. Material hardens again automatically after heat application.

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