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)

This material data has been provided by WIAM.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

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

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	20.0 °C	75 GPa Show Material materials with Elastic modulus of 75 GPa
Elongation A50	20.0 °C	8 - 11 % Show Material materials with Elongation A50 of 8 - 11 %
Hardness, Brinell	20.0 °C	90 - 100 [-] Show Material materials with Hardness, Brinell of 90 - 100 [-]
Poisson's ratio	23.0 °C	0.3 [-] Show Material materials with Poisson's ratio of 0.3 [-]	Typical for Zinc Aluminium
Tensile strength	20.0 °C	310 - 325 MPa Show Material materials with Tensile strength of 310 - 325 MPa
Yield strength Rp0.2	20.0 °C	254 MPa Show Material materials with Yield strength Rp0.2 of 254 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	23.0 °C	2.2E-5 - 2.8E-5 1/K Show Material materials with Coefficient of thermal expansion of 2.2E-5 - 2.8E-5 1/K	Typical for Zinc Aluminium
Melting point		375 - 485 °C Show Material materials with Melting point of 375 - 485 °C	Typical for Zinc Aluminium
Specific heat capacity	23.0 °C	393 - 525 J/(kg·K) Show Material materials with Specific heat capacity of 393 - 525 J/(kg·K)	Typical for Zinc Aluminium
Thermal conductivity	23.0 °C	105 - 125 W/(m·K) Show Material materials with Thermal conductivity 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 %
Cadmium	3E-3 % Show Material materials with Cadmium of 3E-3 %
Copper	2 - 2.5 % Show Material materials with Copper of 2 - 2.5 %
Iron	0.1 % Show Material materials with Iron of 0.1 %
Lead	4E-3 % Show Material materials with Lead of 4E-3 %
Magnesium	0.01 - 0.02 % Show Material materials with Magnesium of 0.01 - 0.02 %
Tin	2E-3 % Show Material materials with Tin of 2E-3 %
Zinc	69.37 % Show Material materials with Zinc of 69.37 %

Technological properties

Property
Processing methods	sand casting