Zinkberatung e. V. 1981 Grade G-ZnAl27Cu2 heat treated

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Description

The material ZnAl27Cu2, a fine zinc block metal alloy acc. to ASTM B 669, german marking ZA 27, is used with the transition coming from malleable cast iron or cast iron with nodular graphite, brass or bronze, where it depends on highest strength and strain. ZA 27 is the best alloy for operatings temperature to 120 °C. The alloy is pressure tight, even in thin cross sections. Where however highest pressure tight ones is necessary, the alloys ZnAl8 or ZnAl12 should be considered. The material is excellently machinable and on high polish sharpening and polishingable. The alloy is used mainly for sand and ingot casting, in addition, for pressure casting on cold chamber machines.

Related Standards

Equivalent Materials

DIN ZP27(ZP2720)

Diese Materialdaten wurden von WIAM zur Verfügung gestellt

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Eigenschaften

Allgemein

Property	Temperature	Value
Dichte	20.0 °C	5 g/cm³ Show Material materials with Dichte of 5 g/cm³

Mechanisch

Property	Temperature	Value	Comment
Dehnung A50	20.0 °C	8 - 11 % Show Material materials with Dehnung A50 of 8 - 11 %
Elastizitätsmodul	20.0 °C	75 GPa Show Material materials with Elastizitätsmodul of 75 GPa
Härte, Brinell	20.0 °C	90 - 100 [-] Show Material materials with Härte, Brinell of 90 - 100 [-]
Poissonzahl	23.0 °C	0.3 [-] Show Material materials with Poissonzahl of 0.3 [-]	Typical for Zinc Aluminium
Streckgrenze Rp 0,2	20.0 °C	254 MPa Show Material materials with Streckgrenze Rp 0,2 of 254 MPa
Zugfestigkeit	20.0 °C	310 - 325 MPa Show Material materials with Zugfestigkeit of 310 - 325 MPa

Thermisch

Property	Temperature	Value	Comment
Koeffizient der thermischen Ausdehnung	23.0 °C	2.2E-5 - 2.8E-5 1/K Show Material materials with Koeffizient der thermischen Ausdehnung of 2.2E-5 - 2.8E-5 1/K	Typical for Zinc Aluminium
Schmelzpunkt		375 - 485 °C Show Material materials with Schmelzpunkt of 375 - 485 °C	Typical for Zinc Aluminium
Spezifische Wärmekapazität	23.0 °C	393 - 525 J/(kg·K) Show Material materials with Spezifische Wärmekapazität of 393 - 525 J/(kg·K)	Typical for Zinc Aluminium
Wärmeleitfähigkeit	23.0 °C	105 - 125 W/(m·K) Show Material materials with Wärmeleitfähigkeit of 105 - 125 W/(m·K)	Typical for Zinc Aluminium

Chemical properties

Property	Value
Aluminium	25 - 28 % Show Material materials with Aluminium of 25 - 28 %
Blei	4E-3 % Show Material materials with Blei of 4E-3 %
Cadmium	3E-3 % Show Material materials with Cadmium of 3E-3 %
Eisen	0.1 % Show Material materials with Eisen of 0.1 %
Kupfer	2 - 2.5 % Show Material materials with Kupfer of 2 - 2.5 %
Magnesium	0.01 - 0.02 % Show Material materials with Magnesium of 0.01 - 0.02 %
Zink	69.37 % Show Material materials with Zink of 69.37 %
Zinn	2E-3 % Show Material materials with Zinn of 2E-3 %

Technological properties

Property
Processing methods	sand casting